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  <element name="AllowanceForDoubtfulAccountsPolicyTextBlock" id="syna_AllowanceForDoubtfulAccountsPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AmortizedCostAndFairValueDebtSecuritiesAbstract" id="syna_AmortizedCostAndFairValueDebtSecuritiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AreaOfOfficeBuildingsAcquired" id="syna_AreaOfOfficeBuildingsAcquired" type="num:areaItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AuctionRateSecuritiesAtInvestmentGrade" id="syna_AuctionRateSecuritiesAtInvestmentGrade" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AuctionRateSecuritiesBelowInvestmentGrade" id="syna_AuctionRateSecuritiesBelowInvestmentGrade" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AuctionRateSecuritiesInvestmentsTableTextBlock" id="syna_AuctionRateSecuritiesInvestmentsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AuctionRateSecuritiesTextBlock" id="syna_AuctionRateSecuritiesTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AuctionRateSecuritiesWithFairValueHavingNoStatedMaturity" id="syna_AuctionRateSecuritiesWithFairValueHavingNoStatedMaturity" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AuctionRateSecuritiesWithFairValueMaturingFromStatedPeriod" id="syna_AuctionRateSecuritiesWithFairValueMaturingFromStatedPeriod" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AuctionRateSecuritiesWithFairValueMaturingWithinSpecifiedPeriod" id="syna_AuctionRateSecuritiesWithFairValueMaturingWithinSpecifiedPeriod" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AvailableForSaleDebtSecuritiesGrossUnrealizedGainAccumulatedInInvestments" id="syna_AvailableForSaleDebtSecuritiesGrossUnrealizedGainAccumulatedInInvestments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments" id="syna_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments" id="syna_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AwardsAvailableUnderAllShareBasedAwardPlanMember" id="syna_AwardsAvailableUnderAllShareBasedAwardPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="BusinessAcquisitionContingentConsiderationsComputationAssumedDiscountRate" id="syna_BusinessAcquisitionContingentConsiderationsComputationAssumedDiscountRate" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="BusinessCombinationContingentConsiderationArrangementsContingentConsiderationObligationToFormerShareholdersOfAcquiree" id="syna_BusinessCombinationContingentConsiderationArrangementsContingentConsiderationObligationToFormerShareholdersOfAcquiree" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="BusinessCredits" id="syna_BusinessCredits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CapitalizedSoftwareMember" id="syna_CapitalizedSoftwareMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CashEquivalentsAndInvestmentsPolicyTextBlock" id="syna_CashEquivalentsAndInvestmentsPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ChangeInContingentConsideration" id="syna_ChangeInContingentConsideration" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CommitmentsContingenciesAndLitigationLineItems" id="syna_CommitmentsContingenciesAndLitigationLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CommitmentsContingenciesAndLitigationTable" id="syna_CommitmentsContingenciesAndLitigationTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="CommonStockRepurchaseProgramExpiryDate" id="syna_CommonStockRepurchaseProgramExpiryDate" type="invest:dateStringItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ComputerEquipment" id="syna_ComputerEquipment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ConcentrationOfCreditRiskPolicyTextBlock" id="syna_ConcentrationOfCreditRiskPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ContingentConsiderationLiabilityRecordedForBusinessCombinationMember" id="syna_ContingentConsiderationLiabilityRecordedForBusinessCombinationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ContributionsByEmployerMatchingContributions" id="syna_ContributionsByEmployerMatchingContributions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CostDenominatedInUsDollars" id="syna_CostDenominatedInUsDollars" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CreditLinkedNotesMember" id="syna_CreditLinkedNotesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CumulativeOtherThanTemporaryImpairmentIncludedInRetainedEarnings" id="syna_CumulativeOtherThanTemporaryImpairmentIncludedInRetainedEarnings" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CustomerBMember" id="syna_CustomerBMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CustomerCMember" id="syna_CustomerCMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CustomerMember" id="syna_CustomerMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CustomerObligation" id="syna_CustomerObligation" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeferralElectionPeriodBeforeScheduledDeliveryDateToDeferDeliveryOfUnderlyingShares" id="syna_DeferralElectionPeriodBeforeScheduledDeliveryDateToDeferDeliveryOfUnderlyingShares" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeferralElectionPeriodBeforeVestingToDeferDeliveryOfUnderlyingShares" id="syna_DeferralElectionPeriodBeforeVestingToDeferDeliveryOfUnderlyingShares" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeferredCompensationArrangementWithIndividualDeferredStockUnitsOutstanding" id="syna_DeferredCompensationArrangementWithIndividualDeferredStockUnitsOutstanding" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeferredStockUnitMember" id="syna_DeferredStockUnitMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeferredStockUnitsMember" id="syna_DeferredStockUnitsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeferredTaxAssetsInvestmentsWriteDown" id="syna_DeferredTaxAssetsInvestmentsWriteDown" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeferredTaxLiabilitiesAcquisitionIntangibles" id="syna_DeferredTaxLiabilitiesAcquisitionIntangibles" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DefinedContributionPlansEligibleEmployeeContributionsAnnualLimit" id="syna_DefinedContributionPlansEligibleEmployeeContributionsAnnualLimit" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DefinedContributionPlansEligibleEmployeeContributionsEmployeesFiftyAndOverAnnualLimit" id="syna_DefinedContributionPlansEligibleEmployeeContributionsEmployeesFiftyAndOverAnnualLimit" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DenominatorAbstract" id="syna_DenominatorAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DevelopableLandThatCanAccommodateAdditionalBuildingSpace" id="syna_DevelopableLandThatCanAccommodateAdditionalBuildingSpace" type="num:areaItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DiscountRateForAdditionalConsiderationOnProductAcceptance" id="syna_DiscountRateForAdditionalConsiderationOnProductAcceptance" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DiscountRateForAdditionalConsiderationOnProductShipped" id="syna_DiscountRateForAdditionalConsiderationOnProductShipped" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DocumentDocumentAndEntityInformationAbstract" id="syna_DocumentDocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DurationOfRenewalOptionsOfFacilitiesUnderOperatingLeases" id="syna_DurationOfRenewalOptionsOfFacilitiesUnderOperatingLeases" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EmployeeCommonStockPurchasesThroughPayrollDeductionsUnderEmployeeStockPurchasePlanPriceAsPercentageOfFairMarketValue" id="syna_EmployeeCommonStockPurchasesThroughPayrollDeductionsUnderEmployeeStockPurchasePlanPriceAsPercentageOfFairMarketValue" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EmployeeStockPurchasePlanMember" id="syna_EmployeeStockPurchasePlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EmployerMatchingFundVestedPeriod" id="syna_EmployerMatchingFundVestedPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EntityWideAccountsReceivableMajorCustomerPercentage" id="syna_EntityWideAccountsReceivableMajorCustomerPercentage" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EntityWideInformationAboutGeographicAreasLongLivedAssetsTableTextBlock" id="syna_EntityWideInformationAboutGeographicAreasLongLivedAssetsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EquipmentAndTooling" id="syna_EquipmentAndTooling" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EstimatedTaxBenefitExpense" id="syna_EstimatedTaxBenefitExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccretionAndRemeasurement" id="syna_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAccretionAndRemeasurement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FederalAndStateCapitalLossesBeginningOfExpirationDate" id="syna_FederalAndStateCapitalLossesBeginningOfExpirationDate" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FederalMember" id="syna_FederalMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FederalResearchTaxCreditExtendedPeriod" id="syna_FederalResearchTaxCreditExtendedPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FiniteLivedIntangibleAssetsFutureAmortizationExpenseForNextFiveYearsAndThereafter" id="syna_FiniteLivedIntangibleAssetsFutureAmortizationExpenseForNextFiveYearsAndThereafter" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FurnitureFixturesAndLeaseholdImprovementsMember" id="syna_FurnitureFixturesAndLeaseholdImprovementsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncentiveCompensationPlanMember" id="syna_IncentiveCompensationPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeLossFromOperationsBeforeProvisionBenefitForIncomeTaxesLineItems" id="syna_IncomeLossFromOperationsBeforeProvisionBenefitForIncomeTaxesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeLossFromOperationsBeforeProvisionBenefitForIncomeTaxesTable" id="syna_IncomeLossFromOperationsBeforeProvisionBenefitForIncomeTaxesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="IncomeTaxDisclosureLineItems" id="syna_IncomeTaxDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxDisclosureTable" id="syna_IncomeTaxDisclosureTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="IncomeTaxReconciliationUnrecognizedTaxBenefits" id="syna_IncomeTaxReconciliationUnrecognizedTaxBenefits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncreaseInUnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" id="syna_IncreaseInUnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InvestmentSecuritiesAtNewCostBasis" id="syna_InvestmentSecuritiesAtNewCostBasis" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InvestmentSecuritiesAtOriginalCostBasis" id="syna_InvestmentSecuritiesAtOriginalCostBasis" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LicensedTechnologyMember" id="syna_LicensedTechnologyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongLivedAssetsByGeographicalAreasLineItems" id="syna_LongLivedAssetsByGeographicalAreasLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ManufacturingEquipmentMember" id="syna_ManufacturingEquipmentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MarketStockUnitAwardsMember" id="syna_MarketStockUnitAwardsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MarketStockUnitsMember" id="syna_MarketStockUnitsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MeasurementOfTaxPositionMinimumLikelihoodOfTaxBenefitsBeingRealizedUponUltimateSettlement" id="syna_MeasurementOfTaxPositionMinimumLikelihoodOfTaxBenefitsBeingRealizedUponUltimateSettlement" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MinimumAmountOfTaxRefundsSubjectToMandatoryReview" id="syna_MinimumAmountOfTaxRefundsSubjectToMandatoryReview" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MinimumWarrantyPeriodOfProducts" id="syna_MinimumWarrantyPeriodOfProducts" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MinimumWeightedAveragePriceOfCommonStockForShareAssociatedWithConvertibleNotesToBeIncludeInCalculationOfDilutedNetIncomePerShare" id="syna_MinimumWeightedAveragePriceOfCommonStockForShareAssociatedWithConvertibleNotesToBeIncludeInCalculationOfDilutedNetIncomePerShare" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MobileProductApplicationsMember" id="syna_MobileProductApplicationsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetDeferredTaxAssetsAndLiabilitiesTableTextBlock" id="syna_NetDeferredTaxAssetsAndLiabilitiesTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetRevenueWithinGeographicAreasBasedOnCustomersLocationsTableTextBlock" id="syna_NetRevenueWithinGeographicAreasBasedOnCustomersLocationsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NonCashInterestIncomeNet" id="syna_NonCashInterestIncomeNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NoncashOrPartNoncashUnpaidPropertyPlantEquipment" id="syna_NoncashOrPartNoncashUnpaidPropertyPlantEquipment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfBuildingRelatedToRepairs" id="syna_NumberOfBuildingRelatedToRepairs" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfBuildingsAcquired" id="syna_NumberOfBuildingsAcquired" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumeratorAbstract" id="syna_NumeratorAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OfferingPeriodExtendsUnderEmployeeStockPurchasePlan" id="syna_OfferingPeriodExtendsUnderEmployeeStockPurchasePlan" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems" id="syna_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OrganizationConsolidationAndPresentationOfFinancialStatementsTable" id="syna_OrganizationConsolidationAndPresentationOfFinancialStatementsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="OtherConcentrationsPolicyTextBlock" id="syna_OtherConcentrationsPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherForeignCountryMember" id="syna_OtherForeignCountryMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherMiscellaneousAccruedLiabilities" id="syna_OtherMiscellaneousAccruedLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PacinianMember" id="syna_PacinianMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PaymentOfContingentConsideration" id="syna_PaymentOfContingentConsideration" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PaymentOfContingentConsiderationFromOperatingActivities" id="syna_PaymentOfContingentConsiderationFromOperatingActivities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PayrollTaxesForDeferredStockUnits" id="syna_PayrollTaxesForDeferredStockUnits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PcProductApplicationsMember" id="syna_PcProductApplicationsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageFromMobileProductMarketInNetRevenue" id="syna_PercentageFromMobileProductMarketInNetRevenue" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfFairMarketValueForWhichExercisePriceIsDesignatedOnIncentiveAndNonqualifiedStockOptionGrants" id="syna_PercentageOfFairMarketValueForWhichExercisePriceIsDesignatedOnIncentiveAndNonqualifiedStockOptionGrants" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfMaximumEmployerMatchingContributionToDefinedContributionPlans" id="syna_PercentageOfMaximumEmployerMatchingContributionToDefinedContributionPlans" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfPotentialPayout" id="syna_PercentageOfPotentialPayout" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodOverWhichShareBasedCompensationIsAmortizedDuration" id="syna_PeriodOverWhichShareBasedCompensationIsAmortizedDuration" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PotentialPayoutAdjustmentRatio" id="syna_PotentialPayoutAdjustmentRatio" type="xbrli:pureItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PropertyPlantAndEquipmentUsefulLifeAndValuesAbstract" id="syna_PropertyPlantAndEquipmentUsefulLifeAndValuesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="QualifiedStockOptions" id="syna_QualifiedStockOptions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RatePerUnitForConsideration" id="syna_RatePerUnitForConsideration" type="us-types:perUnitItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReconciliationOfGrossUnrecognizedTaxBenefitsTableTextBlock" id="syna_ReconciliationOfGrossUnrecognizedTaxBenefitsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SantaClaraHeadquartersPropertyMember" id="syna_SantaClaraHeadquartersPropertyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfLongLivedAssetsByGeographicalAreasTable" id="syna_ScheduleOfLongLivedAssetsByGeographicalAreasTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfOtherLiabilitiesCurrentTableTextBlock" id="syna_ScheduleOfOtherLiabilitiesCurrentTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfShareBasedCompensationDsusActivityTableTextBlock" id="syna_ScheduleOfShareBasedCompensationDsusActivityTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfShareBasedCompensationMsusActivityTableTextBlock" id="syna_ScheduleOfShareBasedCompensationMsusActivityTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedDeferredStockUnitsGranted" id="syna_ShareBasedCompensationArrangementByShareBasedDeferredStockUnitsGranted" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalNumberOfSharesAuthorizedDuringPeriod" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalNumberOfSharesAuthorizedDuringPeriod" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardOptionsGranted" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardOptionsGranted" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodTrancheOne" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodTrancheOne" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodTrancheThree" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodTrancheThree" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodTrancheTwo" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodTrancheTwo" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPriorPeriod" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPriorPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeStockPurchasePlan" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeStockPurchasePlan" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValue" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateMarketValue" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateMarketValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValues" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValues" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsFairValuePerAward" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsFairValuePerAward" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMinimumHistoricalTerm" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMinimumHistoricalTerm" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardIntrinsicValueClosingPrice" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardIntrinsicValueClosingPrice" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketStockUnitsGrantedDuringPeriod" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketStockUnitsGrantedDuringPeriod" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketStockUnitsOutstanding" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketStockUnitsOutstanding" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodContractualLife" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodContractualLife" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodEarlierContractualLife" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodEarlierContractualLife" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanSharesExpired" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanSharesExpired" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardsForfeituresInPeriod" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardsForfeituresInPeriod" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentsAwardWeightedAveragePricePaidForSharesPurchased" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentsAwardWeightedAveragePricePaidForSharesPurchased" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationAwardsAvailableForGrantOrIssuanceTableTextBlock" id="syna_ShareBasedCompensationAwardsAvailableForGrantOrIssuanceTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationLineItems" id="syna_ShareBasedCompensationLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationModifiedAwards" id="syna_ShareBasedCompensationModifiedAwards" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationTable" id="syna_ShareBasedCompensationTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="SharesReservedForFutureIssuanceTableTextBlock" id="syna_SharesReservedForFutureIssuanceTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StateNetOperatingLossBeginningOfExpirationDate" id="syna_StateNetOperatingLossBeginningOfExpirationDate" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockOptionsVestingPercentage" id="syna_StockOptionsVestingPercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockPurchasesUnderEmployeeStockPurchasePlanAsCompensationMaximumSubjectToLegalRestrictionsAndLimitations" id="syna_StockPurchasesUnderEmployeeStockPurchasePlanAsCompensationMaximumSubjectToLegalRestrictionsAndLimitations" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StudentLoansMember" id="syna_StudentLoansMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoThousandTenEmployeeStockPurchasePlanMember" id="syna_TwoThousandTenEmployeeStockPurchasePlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoThousandTenIncentiveCompensationPlanMember" id="syna_TwoThousandTenIncentiveCompensationPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UndistributedOperatingEarningsOfForeignSubsidiaries" id="syna_UndistributedOperatingEarningsOfForeignSubsidiaries" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnrecognizedTaxBenefitsDecreasesResultingFromRemeasurement" id="syna_UnrecognizedTaxBenefitsDecreasesResultingFromRemeasurement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UsefulLife" id="syna_UsefulLife" type="xbrli:durationItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UseOfEstimatesPolicyTextBlock" id="syna_UseOfEstimatesPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="VideoDisplayOperationOfIntegratedDeviceTechnologyMember" id="syna_VideoDisplayOperationOfIntegratedDeviceTechnologyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageExercisePriceExercised" id="syna_WeightedAverageExercisePriceExercised" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageExercisePriceForfeited" id="syna_WeightedAverageExercisePriceForfeited" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageExercisePriceGranted" id="syna_WeightedAverageExercisePriceGranted" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
</schema>





