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  <xs:element id="syna_StockBasedAwardsMember" abstract="true" name="StockBasedAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="syna_EmployeeStockPurchasePlanMember" abstract="true" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_ThreeCustomersMember" abstract="true" name="ThreeCustomersMember" 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_LeaseTerminationCostsMember" abstract="true" name="LeaseTerminationCostsMember" 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>
