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  <xs:element id="syna_EffectiveIncomeTaxRateReconciliationFDEIAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationFDEIAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_EffectiveIncomeTaxRateReconciliationProvisionToForeignExchangeGainLossPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationProvisionToForeignExchangeGainLossPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="syna_EffectiveIncomeTaxRateReconciliationSubpartFIncomePercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationSubpartFIncomePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="syna_EffectiveIncomeTaxRateReconciliationFDEIPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationFDEIPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="syna_DeferredTaxAssetsIntangiblesAndCapitalizedResearchAndDevelopmentCosts" abstract="false" name="DeferredTaxAssetsIntangiblesAndCapitalizedResearchAndDevelopmentCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_NondeductibleInterest" abstract="false" name="NondeductibleInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_DeferredTaxAssetsLeaseLiabilities" abstract="false" name="DeferredTaxAssetsLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_IncomeTaxDisclosureTable" abstract="true" name="IncomeTaxDisclosureTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="syna_DeferredTaxAssetMember" abstract="true" name="DeferredTaxAssetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_IncomeTaxDisclosureLineItems" abstract="true" name="IncomeTaxDisclosureLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="syna_IncreaseDecreaseInUnrecognizedTaxBenefitIncomeTaxPenaltiesAndInterestAccrued" abstract="false" name="IncreaseDecreaseInUnrecognizedTaxBenefitIncomeTaxPenaltiesAndInterestAccrued" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_DecreaseIncreaseInUnrecognizedTaxBenefitsRelatedToPriorYearTaxPositions" abstract="false" name="DecreaseIncreaseInUnrecognizedTaxBenefitsRelatedToPriorYearTaxPositions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_UnrecognizedTaxBenefitsDecreasesResultingFromRemeasurement" abstract="false" name="UnrecognizedTaxBenefitsDecreasesResultingFromRemeasurement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_EnterpriseAndAutomotiveProductApplicationsMember" abstract="true" name="EnterpriseAndAutomotiveProductApplicationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_InternetOfThingsProductApplicationsMember" abstract="true" name="InternetOfThingsProductApplicationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_MobileProductApplicationsMember" abstract="true" name="MobileProductApplicationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_CoreIotMember" abstract="true" name="CoreIotMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_RevenueFromContractWithCustomerTable" abstract="true" name="RevenueFromContractWithCustomerTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="syna_OtherForeignCountryMember" abstract="true" name="OtherForeignCountryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_RevenueFromContractWithCustomerLineItems" abstract="true" name="RevenueFromContractWithCustomerLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="syna_CustomerAMember" abstract="true" name="CustomerAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_CustomerBMember" abstract="true" name="CustomerBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_CustomerCMember" abstract="true" name="CustomerCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_ReportableSegmentMember" abstract="true" name="ReportableSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_CostOfGoodsAndServiceAdjusted" abstract="false" name="CostOfGoodsAndServiceAdjusted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_OperatingExpensesExcludingDepreciationDepletionAmortizationAndShareBasedPaymentArrangementExpenseAdjusted" abstract="false" name="OperatingExpensesExcludingDepreciationDepletionAmortizationAndShareBasedPaymentArrangementExpenseAdjusted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_InterestIncomeExpenseNonoperatingAdjusted" abstract="false" name="InterestIncomeExpenseNonoperatingAdjusted" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_CostAcquiredIntangiblesAmortizationAdjusted" abstract="false" name="CostAcquiredIntangiblesAmortizationAdjusted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_CostShareBasedPaymentArrangementNoncashExpenseAdjusted" abstract="false" name="CostShareBasedPaymentArrangementNoncashExpenseAdjusted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_ShareBasedPaymentArrangementNoncashExpenseAdjusted" abstract="false" name="ShareBasedPaymentArrangementNoncashExpenseAdjusted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="syna_Fiscal2024AndEarlierRestructuringPlanMember" abstract="true" name="Fiscal2024AndEarlierRestructuringPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_Fiscal2025RestructuringPlanMember" abstract="true" name="Fiscal2025RestructuringPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_Fiscal2026RestructuringPlanMember" abstract="true" name="Fiscal2026RestructuringPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_RestructuringChargesExcludingAssetWriteOff" abstract="false" name="RestructuringChargesExcludingAssetWriteOff" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
