<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019eb7db-002d-706f-a630-db1c468b60ad,g:7aab996a-b8e5-455b-8f8c-f36b2738225b-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://www.macomtech.com/role/CondensedConsolidatedBalanceSheetsUnaudited" xlink:type="simple" xlink:href="mtsi-20260703.xsd#CondensedConsolidatedBalanceSheetsUnaudited"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/CondensedConsolidatedBalanceSheetsUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019eb7db-0198-7efa-b3f4-da10389d59a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestments_019eb7db-0198-7a27-8bfc-6db42543e13e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermInvestments"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019eb7db-0198-7efa-b3f4-da10389d59a3" xlink:to="loc_us-gaap_ShortTermInvestments_019eb7db-0198-7a27-8bfc-6db42543e13e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019eb7db-0198-7a59-9df3-6ce6406461d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019eb7db-0198-7efa-b3f4-da10389d59a3" xlink:to="loc_us-gaap_InventoryNet_019eb7db-0198-7a59-9df3-6ce6406461d9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019eb7db-0198-7673-91b7-65030f2f07c8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019eb7db-0198-7efa-b3f4-da10389d59a3" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019eb7db-0198-7673-91b7-65030f2f07c8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019eb7db-0198-7997-a39b-ab33d08573dc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019eb7db-0198-7efa-b3f4-da10389d59a3" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_019eb7db-0198-7997-a39b-ab33d08573dc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019eb7db-0198-7c3a-bc05-2186d8b0c313" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019eb7db-0198-7efa-b3f4-da10389d59a3" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019eb7db-0198-7c3a-bc05-2186d8b0c313" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019eb7db-0198-78c8-8a1c-7685176bf8da" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019eb7db-0198-775f-aa77-e4be13e97e1f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019eb7db-0198-78c8-8a1c-7685176bf8da" xlink:to="loc_us-gaap_CommonStockValue_019eb7db-0198-775f-aa77-e4be13e97e1f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_019eb7db-0198-72ca-a0aa-e386391f849e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockValue"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019eb7db-0198-78c8-8a1c-7685176bf8da" xlink:to="loc_us-gaap_TreasuryStockValue_019eb7db-0198-72ca-a0aa-e386391f849e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019eb7db-0198-7276-941c-67b78f811c0e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019eb7db-0198-78c8-8a1c-7685176bf8da" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019eb7db-0198-7276-941c-67b78f811c0e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019eb7db-0198-737e-b340-1ad428723b39" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019eb7db-0198-78c8-8a1c-7685176bf8da" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019eb7db-0198-737e-b340-1ad428723b39" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019eb7db-0198-795e-86ae-5ad4d9c7c62e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019eb7db-0198-78c8-8a1c-7685176bf8da" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019eb7db-0198-795e-86ae-5ad4d9c7c62e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019eb7db-0198-7c5d-af39-3b252828d93c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019eb7db-0198-7809-89e6-b01e8eed01fc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019eb7db-0198-7c5d-af39-3b252828d93c" xlink:to="loc_us-gaap_Liabilities_019eb7db-0198-7809-89e6-b01e8eed01fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019eb7db-0198-7a65-b1ba-cdd84b80a3d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019eb7db-0198-7c5d-af39-3b252828d93c" xlink:to="loc_us-gaap_StockholdersEquity_019eb7db-0198-7a65-b1ba-cdd84b80a3d6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019eb7db-0198-7f28-ac39-e4872ead256f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019eb7db-0198-770b-9081-7036155f9f55" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019eb7db-0198-7f28-ac39-e4872ead256f" xlink:to="loc_us-gaap_AssetsCurrent_019eb7db-0198-770b-9081-7036155f9f55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019eb7db-0198-73c2-b6d7-e106165b7000" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019eb7db-0198-7f28-ac39-e4872ead256f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019eb7db-0198-73c2-b6d7-e106165b7000" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019eb7db-0198-7612-868d-cce5c1bfec3d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019eb7db-0198-7f28-ac39-e4872ead256f" xlink:to="loc_us-gaap_Goodwill_019eb7db-0198-7612-868d-cce5c1bfec3d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019eb7db-0198-7f75-af8e-a3de0d141f84" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019eb7db-0198-7f28-ac39-e4872ead256f" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019eb7db-0198-7f75-af8e-a3de0d141f84" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_019eb7db-0198-7ed7-b96b-f230fe53146e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019eb7db-0198-7f28-ac39-e4872ead256f" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_019eb7db-0198-7ed7-b96b-f230fe53146e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermInvestments_019eb7db-0198-7d0b-962c-d332f825a967" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermInvestments"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019eb7db-0198-7f28-ac39-e4872ead256f" xlink:to="loc_us-gaap_LongTermInvestments_019eb7db-0198-7d0b-962c-d332f825a967" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019faa81-489d-79ef-8d7d-209671e38518" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019eb7db-0198-7f28-ac39-e4872ead256f" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019faa81-489d-79ef-8d7d-209671e38518" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019eb7db-0198-714c-8e46-943b45ced46b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019eb7db-0198-76b4-8289-d9c74dfcde75" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019eb7db-0198-714c-8e46-943b45ced46b" xlink:to="loc_us-gaap_LiabilitiesCurrent_019eb7db-0198-76b4-8289-d9c74dfcde75" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_019eb7db-0198-71b7-89b7-20f55f93e857" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019eb7db-0198-714c-8e46-943b45ced46b" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_019eb7db-0198-71b7-89b7-20f55f93e857" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mtsi_FinancingObligationPropertyPlantAndEquipmentNoncurrent_019eb7db-0198-70f6-b952-ab20992f70a0" xlink:href="mtsi-20260703.xsd#mtsi_FinancingObligationPropertyPlantAndEquipmentNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019eb7db-0198-714c-8e46-943b45ced46b" xlink:to="loc_mtsi_FinancingObligationPropertyPlantAndEquipmentNoncurrent_019eb7db-0198-70f6-b952-ab20992f70a0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019eb7db-0198-7ca1-80b0-5d597e0ab5c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019eb7db-0198-714c-8e46-943b45ced46b" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019eb7db-0198-7ca1-80b0-5d597e0ab5c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019eb7db-0198-7e30-9d0c-daaa5ededa57" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019eb7db-0198-714c-8e46-943b45ced46b" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_019eb7db-0198-7e30-9d0c-daaa5ededa57" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019eb7db-0198-7db2-ad44-9b13a6ae31c0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_019eb7db-0198-764b-b60a-1a7cc057fc10" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019eb7db-0198-7db2-ad44-9b13a6ae31c0" xlink:to="loc_us-gaap_AccountsPayableCurrent_019eb7db-0198-764b-b60a-1a7cc057fc10" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019eb7db-0198-721e-bf89-a9d2b84dfaec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019eb7db-0198-7db2-ad44-9b13a6ae31c0" xlink:to="loc_us-gaap_LongTermDebtCurrent_019eb7db-0198-721e-bf89-a9d2b84dfaec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_019eb7db-0198-7617-b828-f5e309d55744" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019eb7db-0198-7db2-ad44-9b13a6ae31c0" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_019eb7db-0198-7617-b828-f5e309d55744" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_019eb7db-0198-7e03-92be-1db202e94d8b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019eb7db-0198-7db2-ad44-9b13a6ae31c0" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_019eb7db-0198-7e03-92be-1db202e94d8b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/CondensedConsolidatedStatementsofOperationsUnaudited" xlink:type="simple" xlink:href="mtsi-20260703.xsd#CondensedConsolidatedStatementsofOperationsUnaudited"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/CondensedConsolidatedStatementsofOperationsUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019eb7db-0198-701d-85f0-fee5ad242591" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019eb7db-0198-72b6-bce6-84f1d94fe5d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_019eb7db-0198-701d-85f0-fee5ad242591" xlink:to="loc_us-gaap_Revenues_019eb7db-0198-72b6-bce6-84f1d94fe5d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019eb7db-0198-7f91-b753-209673c638cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_019eb7db-0198-701d-85f0-fee5ad242591" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019eb7db-0198-7f91-b753-209673c638cf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019eb7db-0198-7d5a-93ea-9356076e2357" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeOther_019eb7db-0198-7a15-a0b2-195c1405895b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeOther"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019eb7db-0198-7d5a-93ea-9356076e2357" xlink:to="loc_us-gaap_InterestIncomeOther_019eb7db-0198-7a15-a0b2-195c1405895b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_019eb7db-0198-728c-80a1-d905263a3bd4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019eb7db-0198-7d5a-93ea-9356076e2357" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_019eb7db-0198-728c-80a1-d905263a3bd4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_019eb7db-0198-72c5-b113-8db23871b8fd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019eb7db-0198-7d5a-93ea-9356076e2357" xlink:to="loc_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_019eb7db-0198-72c5-b113-8db23871b8fd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_019faa83-73ed-701d-b84c-e919ee121df2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019eb7db-0198-7d5a-93ea-9356076e2357" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_019faa83-73ed-701d-b84c-e919ee121df2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019eb7db-0198-7731-b22f-b548575889fe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019eb7db-0198-7844-9fd1-ddc79d109536" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019eb7db-0198-7731-b22f-b548575889fe" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019eb7db-0198-7844-9fd1-ddc79d109536" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019eb7db-0198-7baa-b2ae-7c383874aa6e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019eb7db-0198-7731-b22f-b548575889fe" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019eb7db-0198-7baa-b2ae-7c383874aa6e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_019eb7db-0198-76cd-9f73-46a5f3580747" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_019eb7db-0198-7915-8b1e-8a1589d9e78b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_019eb7db-0198-76cd-9f73-46a5f3580747" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_019eb7db-0198-7915-8b1e-8a1589d9e78b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019eb7db-0198-7f81-b03c-0d42054802af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_019eb7db-0198-76cd-9f73-46a5f3580747" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019eb7db-0198-7f81-b03c-0d42054802af" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019eb7db-0198-73f5-8070-f427f2dcb5a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019eb7db-0198-7979-b464-278db393fe0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019eb7db-0198-73f5-8070-f427f2dcb5a2" xlink:to="loc_us-gaap_OperatingIncomeLoss_019eb7db-0198-7979-b464-278db393fe0a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019eb7db-0198-7e5e-bf0f-db152d6a6cca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019eb7db-0198-73f5-8070-f427f2dcb5a2" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_019eb7db-0198-7e5e-bf0f-db152d6a6cca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019eb7db-0198-7e8f-81a8-aaa2e858575a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019eb7db-0198-7a8f-999d-876be3c45244" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019eb7db-0198-7e8f-81a8-aaa2e858575a" xlink:to="loc_us-gaap_GrossProfit_019eb7db-0198-7a8f-999d-876be3c45244" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_019eb7db-0198-76ae-acb7-52c14c51bffe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019eb7db-0198-7e8f-81a8-aaa2e858575a" xlink:to="loc_us-gaap_OperatingExpenses_019eb7db-0198-76ae-acb7-52c14c51bffe" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/CondensedConsolidatedStatementsofComprehensiveLossIncomeUnaudited" xlink:type="simple" xlink:href="mtsi-20260703.xsd#CondensedConsolidatedStatementsofComprehensiveLossIncomeUnaudited"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/CondensedConsolidatedStatementsofComprehensiveLossIncomeUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019eb7db-0198-7573-8dbc-b547955e9a36" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_019eb7db-0198-7612-a8d4-7ca3fc6274be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019eb7db-0198-7573-8dbc-b547955e9a36" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_019eb7db-0198-7612-a8d4-7ca3fc6274be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019eb7db-0198-782a-8580-48a006a5baf4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019eb7db-0198-7573-8dbc-b547955e9a36" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019eb7db-0198-782a-8580-48a006a5baf4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_019eb7db-0198-7fe1-89cb-d6beb96244e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019eb7db-0198-7531-b922-b736da23ed7d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019eb7db-0198-7fe1-89cb-d6beb96244e1" xlink:to="loc_us-gaap_NetIncomeLoss_019eb7db-0198-7531-b922-b736da23ed7d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019eb7db-0198-7ce4-b5c7-ab6e8dd4d865" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019eb7db-0198-7fe1-89cb-d6beb96244e1" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019eb7db-0198-7ce4-b5c7-ab6e8dd4d865" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/CondensedConsolidatedStatementsofCashFlowsUnaudited" xlink:type="simple" xlink:href="mtsi-20260703.xsd#CondensedConsolidatedStatementsofCashFlowsUnaudited"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/CondensedConsolidatedStatementsofCashFlowsUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019eb7db-0198-7c12-86ee-1c44478e1643" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfConvertibleDebt_019eb7db-0198-79e3-8542-a444f3edfc37" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfConvertibleDebt"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019eb7db-0198-7c12-86ee-1c44478e1643" xlink:to="loc_us-gaap_RepaymentsOfConvertibleDebt_019eb7db-0198-79e3-8542-a444f3edfc37" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeasePrincipalPayments_019eb7db-0198-7123-ac8c-1aa5d7af204c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeasePrincipalPayments"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019eb7db-0198-7c12-86ee-1c44478e1643" xlink:to="loc_us-gaap_FinanceLeasePrincipalPayments_019eb7db-0198-7123-ac8c-1aa5d7af204c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_019eb7db-0198-7ccd-9658-f5fdc2ddc331" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019eb7db-0198-7c12-86ee-1c44478e1643" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_019eb7db-0198-7ccd-9658-f5fdc2ddc331" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfNotesPayable_019eb7db-0198-7945-b5b2-d9b6be28ee22" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfNotesPayable"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019eb7db-0198-7c12-86ee-1c44478e1643" xlink:to="loc_us-gaap_RepaymentsOfNotesPayable_019eb7db-0198-7945-b5b2-d9b6be28ee22" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromConvertibleDebt_019eb7db-0198-7b77-b55f-33e841d71c43" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromConvertibleDebt"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019eb7db-0198-7c12-86ee-1c44478e1643" xlink:to="loc_us-gaap_ProceedsFromConvertibleDebt_019eb7db-0198-7b77-b55f-33e841d71c43" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mtsi_ProceedsFromFinancingArrangement_019eb7db-0198-712d-bb5c-38ec0ec3b963" xlink:href="mtsi-20260703.xsd#mtsi_ProceedsFromFinancingArrangement"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019eb7db-0198-7c12-86ee-1c44478e1643" xlink:to="loc_mtsi_ProceedsFromFinancingArrangement_019eb7db-0198-712d-bb5c-38ec0ec3b963" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_019faa79-199e-78a8-8531-378d40691e7c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019eb7db-0198-7c12-86ee-1c44478e1643" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_019faa79-199e-78a8-8531-378d40691e7c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019eb7db-0198-7061-b356-90adfa495d4b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-76cb-8358-c399b8dd56dc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019eb7db-0198-7061-b356-90adfa495d4b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-76cb-8358-c399b8dd56dc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019eb7db-0198-747e-af94-3bfbcf294960" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019eb7db-0198-7061-b356-90adfa495d4b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019eb7db-0198-747e-af94-3bfbcf294960" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019eb7db-0198-72a6-8e87-c4ef04f5156d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019eb7db-0198-7061-b356-90adfa495d4b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019eb7db-0198-72a6-8e87-c4ef04f5156d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019eb7db-0198-742b-aac4-3b4a8beb393d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019eb7db-0198-7061-b356-90adfa495d4b" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019eb7db-0198-742b-aac4-3b4a8beb393d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019eb7db-0198-7730-b0ef-625c12324f11" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019eb7db-0198-7824-bbbf-75c5ead91621" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019eb7db-0198-7730-b0ef-625c12324f11" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019eb7db-0198-7824-bbbf-75c5ead91621" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForSoftware_019eb7db-0198-7dea-9178-274d7439901e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForSoftware"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019eb7db-0198-7730-b0ef-625c12324f11" xlink:to="loc_us-gaap_PaymentsForSoftware_019eb7db-0198-7dea-9178-274d7439901e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_019eb7db-0198-74e6-820b-7b25427448b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019eb7db-0198-7730-b0ef-625c12324f11" xlink:to="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_019eb7db-0198-74e6-820b-7b25427448b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mtsi_PurchasesOfShortTermInvestments_019eb7db-0198-7eb2-9cae-2f444f680c5a" xlink:href="mtsi-20260703.xsd#mtsi_PurchasesOfShortTermInvestments"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019eb7db-0198-7730-b0ef-625c12324f11" xlink:to="loc_mtsi_PurchasesOfShortTermInvestments_019eb7db-0198-7eb2-9cae-2f444f680c5a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mtsi_PurchasesOfLongTermInvestments_019eb7db-0198-7c74-a236-794f7b3569de" xlink:href="mtsi-20260703.xsd#mtsi_PurchasesOfLongTermInvestments"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019eb7db-0198-7730-b0ef-625c12324f11" xlink:to="loc_mtsi_PurchasesOfLongTermInvestments_019eb7db-0198-7c74-a236-794f7b3569de" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_019eb7db-0198-7cb1-ae3d-4f7ba8e1c31a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019eb7db-0198-7730-b0ef-625c12324f11" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_019eb7db-0198-7cb1-ae3d-4f7ba8e1c31a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mtsi_PurchaseOfPropertyUnderFinancingArrangement_019faa76-c1f8-7c9c-b6fe-5f6bd49b3366" xlink:href="mtsi-20260703.xsd#mtsi_PurchaseOfPropertyUnderFinancingArrangement"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019eb7db-0198-7730-b0ef-625c12324f11" xlink:to="loc_mtsi_PurchaseOfPropertyUnderFinancingArrangement_019faa76-c1f8-7c9c-b6fe-5f6bd49b3366" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_019faa76-c1f8-7b22-81d9-81c5f4f1ff35" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019eb7db-0198-7730-b0ef-625c12324f11" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_019faa76-c1f8-7b22-81d9-81c5f4f1ff35" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019eb7db-0198-7b1e-bb1e-0c07f03736c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_NetIncomeLoss_019eb7db-0198-7b1e-bb1e-0c07f03736c7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019eb7db-0198-7b0b-aac0-dd0670f01b62" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019eb7db-0198-7b0b-aac0-dd0670f01b62" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_019eb7db-0198-711e-9bb0-1438f700a78d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_ShareBasedCompensation_019eb7db-0198-711e-9bb0-1438f700a78d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_019eb7db-0198-7291-a81b-560b73ca80ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_019eb7db-0198-7291-a81b-560b73ca80ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_019eb7db-0198-7550-89e1-1bb5c5010d76" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_019eb7db-0198-7550-89e1-1bb5c5010d76" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mtsi_AmortizationOnMarketableSecuritiesNet_019eb7db-0198-7b8e-b8db-5073704735e6" xlink:href="mtsi-20260703.xsd#mtsi_AmortizationOnMarketableSecuritiesNet"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_mtsi_AmortizationOnMarketableSecuritiesNet_019eb7db-0198-7b8e-b8db-5073704735e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_019eb7db-0198-7316-b7ce-3e4c6752331b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_019eb7db-0198-7316-b7ce-3e4c6752331b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019eb7db-0198-7f49-b0af-bff1ee2f7fd7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019eb7db-0198-7f49-b0af-bff1ee2f7fd7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_019eb7db-0198-79e7-9dfa-f2f95ced5702" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_019eb7db-0198-79e7-9dfa-f2f95ced5702" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019eb7db-0198-7067-84da-e10522eecf3f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019eb7db-0198-7067-84da-e10522eecf3f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_019eb7db-0198-746c-865a-a52b4c078d01" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_019eb7db-0198-746c-865a-a52b4c078d01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_019eb7db-0198-7b05-a7b4-e091287237b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_019eb7db-0198-7b05-a7b4-e091287237b5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_019eb7db-0198-750e-a7a5-36a9f3a17151" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_019eb7db-0198-750e-a7a5-36a9f3a17151" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_019faa7d-7f87-79e6-8dcd-84f1a5ec5bcf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019eb7db-0198-796e-a862-872ac6c90ad8" xlink:to="loc_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_019faa7d-7f87-79e6-8dcd-84f1a5ec5bcf" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/INVESTMENTSSummaryofAvailableforSaleInvestmentsDetails" xlink:type="simple" xlink:href="mtsi-20260703.xsd#INVESTMENTSSummaryofAvailableforSaleInvestmentsDetails"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/INVESTMENTSSummaryofAvailableforSaleInvestmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019eb7db-0198-7ca6-9d3d-e37ca015dd48" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_019eb7db-0198-76bd-9244-da1b2e44ef03" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019eb7db-0198-7ca6-9d3d-e37ca015dd48" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_019eb7db-0198-76bd-9244-da1b2e44ef03" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_019eb7db-0198-726d-8e7e-19664f91de23" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019eb7db-0198-7ca6-9d3d-e37ca015dd48" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_019eb7db-0198-726d-8e7e-19664f91de23" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019eb7db-0198-72b7-92cf-6320088e5d71" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019eb7db-0198-7ca6-9d3d-e37ca015dd48" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019eb7db-0198-72b7-92cf-6320088e5d71" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/INVESTMENTSSummaryofContractualMaturitiesofInvestmentsDetails" xlink:type="simple" xlink:href="mtsi-20260703.xsd#INVESTMENTSSummaryofContractualMaturitiesofInvestmentsDetails"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/INVESTMENTSSummaryofContractualMaturitiesofInvestmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019eb7db-0198-7193-a85e-59564d281457" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent_019eb7db-0198-7019-9adf-10600863f3c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019eb7db-0198-7193-a85e-59564d281457" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent_019eb7db-0198-7019-9adf-10600863f3c6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesNoncurrent_019eb7db-0198-7f4e-8f84-78e4c259a3bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecuritiesNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019eb7db-0198-7193-a85e-59564d281457" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesNoncurrent_019eb7db-0198-7f4e-8f84-78e4c259a3bc" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/INVENTORIESDetails" xlink:type="simple" xlink:href="mtsi-20260703.xsd#INVENTORIESDetails"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/INVENTORIESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019eb7db-0198-79f6-955c-80b87d87969a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsNetOfReserves_019eb7db-0198-7226-8e20-d141db1ec7ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryRawMaterialsNetOfReserves"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019eb7db-0198-79f6-955c-80b87d87969a" xlink:to="loc_us-gaap_InventoryRawMaterialsNetOfReserves_019eb7db-0198-7226-8e20-d141db1ec7ff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_019eb7db-0198-7d60-9389-abea01f442ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryWorkInProcessNetOfReserves"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019eb7db-0198-79f6-955c-80b87d87969a" xlink:to="loc_us-gaap_InventoryWorkInProcessNetOfReserves_019eb7db-0198-7d60-9389-abea01f442ce" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_019eb7db-0198-7e56-8325-f53ca7ecee96" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019eb7db-0198-79f6-955c-80b87d87969a" xlink:to="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_019eb7db-0198-7e56-8325-f53ca7ecee96" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/PROPERTYANDEQUIPMENTComponentsofPropertyPlantandEquipmentDetails" xlink:type="simple" xlink:href="mtsi-20260703.xsd#PROPERTYANDEQUIPMENTComponentsofPropertyPlantandEquipmentDetails"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/PROPERTYANDEQUIPMENTComponentsofPropertyPlantandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019eb7db-0198-7da9-a1d0-ed7f7c27055d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_019eb7db-0198-7cd4-a722-cf4b6bbe5c4a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_019eb7db-0198-7da9-a1d0-ed7f7c27055d" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_019eb7db-0198-7cd4-a722-cf4b6bbe5c4a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019eb7db-0198-779e-9fa1-9dcbff130331" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_019eb7db-0198-7da9-a1d0-ed7f7c27055d" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019eb7db-0198-779e-9fa1-9dcbff130331" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/INTANGIBLEASSETSSummaryofIntangibleAssetsDetails" xlink:type="simple" xlink:href="mtsi-20260703.xsd#INTANGIBLEASSETSSummaryofIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/INTANGIBLEASSETSSummaryofIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019eb7db-0198-72ac-8507-4e00ceb40165" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_019eb7db-0198-79dd-83fb-9f84aee95c06" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019eb7db-0198-72ac-8507-4e00ceb40165" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_019eb7db-0198-79dd-83fb-9f84aee95c06" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019eb7db-0198-78f2-984f-c539e930a238" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019eb7db-0198-72ac-8507-4e00ceb40165" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019eb7db-0198-78f2-984f-c539e930a238" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019eb7db-0198-76a1-8b48-cef3288801ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019eb7db-0198-72ac-8507-4e00ceb40165" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019eb7db-0198-76a1-8b48-cef3288801ed" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/INTANGIBLEASSETSSummaryofActivityinIntangibleAssetsandGoodwillDetails" xlink:type="simple" xlink:href="mtsi-20260703.xsd#INTANGIBLEASSETSSummaryofActivityinIntangibleAssetsandGoodwillDetails"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/INTANGIBLEASSETSSummaryofActivityinIntangibleAssetsandGoodwillDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019eb7db-0198-7004-9073-246476464e16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019eb7db-0198-7f0f-9cea-27899c986f99" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019eb7db-0198-7004-9073-246476464e16" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019eb7db-0198-7f0f-9cea-27899c986f99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019eb7db-0198-7b5f-86f1-4e4a14b6a985" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019eb7db-0198-7004-9073-246476464e16" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019eb7db-0198-7b5f-86f1-4e4a14b6a985" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019eb7db-0198-7b5b-b0fe-f67122d8410f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019eb7db-0198-71ef-95ad-b368a27655a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019eb7db-0198-7b5b-b0fe-f67122d8410f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019eb7db-0198-71ef-95ad-b368a27655a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_019eb7db-0198-7401-8fa7-5b3b830bdbe9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019eb7db-0198-7b5b-b0fe-f67122d8410f" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_019eb7db-0198-7401-8fa7-5b3b830bdbe9" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/INTANGIBLEASSETSSummaryofEstimatedAmortizationofIntangibleAssetsDetails" xlink:type="simple" xlink:href="mtsi-20260703.xsd#INTANGIBLEASSETSSummaryofEstimatedAmortizationofIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/INTANGIBLEASSETSSummaryofEstimatedAmortizationofIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019eb7db-0198-7423-8ca7-12ef9604afdd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_019eb7db-0198-78e0-8300-7ba88c2f7bc9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019eb7db-0198-7423-8ca7-12ef9604afdd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_019eb7db-0198-78e0-8300-7ba88c2f7bc9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_019eb7db-0198-7e6d-bb71-02c71313ab3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019eb7db-0198-7423-8ca7-12ef9604afdd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_019eb7db-0198-7e6d-bb71-02c71313ab3b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_019eb7db-0198-7c81-879e-68ddc3c61f19" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019eb7db-0198-7423-8ca7-12ef9604afdd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_019eb7db-0198-7c81-879e-68ddc3c61f19" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_019eb7db-0198-77ad-a3dc-c2eb9a766955" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019eb7db-0198-7423-8ca7-12ef9604afdd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_019eb7db-0198-77ad-a3dc-c2eb9a766955" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_019eb7db-0198-7f94-a9d5-06109d7561b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019eb7db-0198-7423-8ca7-12ef9604afdd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_019eb7db-0198-7f94-a9d5-06109d7561b0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mtsi_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_019eb7db-0198-71e4-926b-5338a0fb9b7a" xlink:href="mtsi-20260703.xsd#mtsi_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019eb7db-0198-7423-8ca7-12ef9604afdd" xlink:to="loc_mtsi_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_019eb7db-0198-71e4-926b-5338a0fb9b7a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/AccruedLiabilitiesScheduleofAccruedLiabilitiesDetail" xlink:type="simple" xlink:href="mtsi-20260703.xsd#AccruedLiabilitiesScheduleofAccruedLiabilitiesDetail"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/AccruedLiabilitiesScheduleofAccruedLiabilitiesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_019eb7db-0198-7cbf-97e1-759d98459191" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019eb7db-0198-7ba9-a63f-a04819b1ca13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019eb7db-0198-7cbf-97e1-759d98459191" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019eb7db-0198-7ba9-a63f-a04819b1ca13" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_019eb7db-0198-74e7-b30e-c0e08123632a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019eb7db-0198-7cbf-97e1-759d98459191" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_019eb7db-0198-74e7-b30e-c0e08123632a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredRevenue_019eb7db-0198-770c-8f21-63e652508612" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredRevenue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019eb7db-0198-7cbf-97e1-759d98459191" xlink:to="loc_us-gaap_DeferredRevenue_019eb7db-0198-770c-8f21-63e652508612" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mtsi_InternalUseSoftwareAccrual_019eb7db-0198-7c14-883c-84f9ff6e49e7" xlink:href="mtsi-20260703.xsd#mtsi_InternalUseSoftwareAccrual"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019eb7db-0198-7cbf-97e1-759d98459191" xlink:to="loc_mtsi_InternalUseSoftwareAccrual_019eb7db-0198-7c14-883c-84f9ff6e49e7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_019eb7db-0198-7085-a014-004364ffc953" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_019eb7db-0198-7cbf-97e1-759d98459191" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_019eb7db-0198-7085-a014-004364ffc953" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/EARNINGSPERSHAREDetails" xlink:type="simple" xlink:href="mtsi-20260703.xsd#EARNINGSPERSHAREDetails"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/EARNINGSPERSHAREDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019eb7db-0199-7cff-8483-fe9527fa7157" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_019eb7db-0199-7116-a952-7e03846fd6ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019eb7db-0199-7cff-8483-fe9527fa7157" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_019eb7db-0199-7116-a952-7e03846fd6ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019eb7db-0199-7ae7-ab91-941fe537c4a9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019eb7db-0199-7cff-8483-fe9527fa7157" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019eb7db-0199-7ae7-ab91-941fe537c4a9" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.macomtech.com/role/SEGMENTREPORTINGGEOGRAPHICANDSIGNIFICANTCUSTOMERINFORMATIONSegmentDetails" xlink:type="simple" xlink:href="mtsi-20260703.xsd#SEGMENTREPORTINGGEOGRAPHICANDSIGNIFICANTCUSTOMERINFORMATIONSegmentDetails"/>
  <link:calculationLink xlink:role="http://www.macomtech.com/role/SEGMENTREPORTINGGEOGRAPHICANDSIGNIFICANTCUSTOMERINFORMATIONSegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019eb7db-024a-7f7d-bafe-3b334dfc4c3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_019eb7db-024a-7152-b223-731d36ae2866" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019eb7db-024a-7f7d-bafe-3b334dfc4c3b" xlink:to="loc_us-gaap_Revenues_019eb7db-024a-7152-b223-731d36ae2866" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mtsi_CostOfProductAndServiceSoldAdjusted_019eb7db-024a-7dc5-9bb9-fb6212c5a113" xlink:href="mtsi-20260703.xsd#mtsi_CostOfProductAndServiceSoldAdjusted"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019eb7db-024a-7f7d-bafe-3b334dfc4c3b" xlink:to="loc_mtsi_CostOfProductAndServiceSoldAdjusted_019eb7db-024a-7dc5-9bb9-fb6212c5a113" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mtsi_ResearchAndDevelopmentExpenseAdjusted_019eb7db-024a-7421-9d70-8116ebbf494a" xlink:href="mtsi-20260703.xsd#mtsi_ResearchAndDevelopmentExpenseAdjusted"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019eb7db-024a-7f7d-bafe-3b334dfc4c3b" xlink:to="loc_mtsi_ResearchAndDevelopmentExpenseAdjusted_019eb7db-024a-7421-9d70-8116ebbf494a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_mtsi_SellingGeneralAndAdministrativeExpenseAdjusted_019eb7db-024a-7063-820b-cad0d6fc3af6" xlink:href="mtsi-20260703.xsd#mtsi_SellingGeneralAndAdministrativeExpenseAdjusted"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019eb7db-024a-7f7d-bafe-3b334dfc4c3b" xlink:to="loc_mtsi_SellingGeneralAndAdministrativeExpenseAdjusted_019eb7db-024a-7063-820b-cad0d6fc3af6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_019eb7db-024a-760a-87c3-a41f02a5b3cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019eb7db-024a-7f7d-bafe-3b334dfc4c3b" xlink:to="loc_us-gaap_LaborAndRelatedExpense_019eb7db-024a-760a-87c3-a41f02a5b3cc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_019eb7db-024a-7b3f-bf31-3821486e750b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019eb7db-024a-7f7d-bafe-3b334dfc4c3b" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_019eb7db-024a-7b3f-bf31-3821486e750b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationIntegrationRelatedCosts_019eb7db-024a-776a-a5ef-70768cd43f7d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationIntegrationRelatedCosts"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019eb7db-024a-7f7d-bafe-3b334dfc4c3b" xlink:to="loc_us-gaap_BusinessCombinationIntegrationRelatedCosts_019eb7db-024a-776a-a5ef-70768cd43f7d" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
