

<!-- RR Donnelley Xcelerate Taxonomy Schema, based on XBRL 2.1  http://www.rrdonnelley.com/ -->
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<!-- Round: 6 -->
<!-- Creation date: 2012-11-02T17:23:34Z -->
<!-- Copyright (c) 2005-2012 R.R. Donnelley & Sons Company All Rights Reserved. -->
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        <link:definition>110 - Disclosure - Net Income Per Share</link:definition>
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        <link:definition>112 - Disclosure - Auction Rate Securities</link:definition>
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        <link:definition>124 - Disclosure - Net Income Per Share (Tables)</link:definition>
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        <link:definition>126 - Disclosure - Auction Rate Securities (Tables)</link:definition>
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        <link:definition>128 - Disclosure - Other Accrued Liabilities (Tables)</link:definition>
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        <link:definition>129 - Disclosure - Share-Based Compensation (Tables)</link:definition>
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        <link:definition>130 - Disclosure - Segment, Customers, and Geographic Information (Tables)</link:definition>
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        <link:definition>131 - Disclosure - Acquisitions (Tables)</link:definition>
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        <link:definition>132 - Disclosure - Purchased Intangibles (Tables)</link:definition>
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        <link:definition>133 - Disclosure - Net Income Per Share - Basic and Diluted Net Income Per Share (Detail)</link:definition>
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        <link:definition>134 - Disclosure - Net Income Per Share - Additional Information (Detail)</link:definition>
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        <link:definition>137 - Disclosure - Fair Value - Changes in Fair Value of Contingent Consideration (Detail)</link:definition>
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  <element name="OtherContingenciesAndCommitmentsLineItems" id="syna_OtherContingenciesAndCommitmentsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherContingenciesAndCommitmentsTable" id="syna_OtherContingenciesAndCommitmentsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <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="PayrollTaxesForDeferredStockUnits" id="syna_PayrollTaxesForDeferredStockUnits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageFromPersonalComputerMarketInNetRevenue" id="syna_PercentageFromPersonalComputerMarketInNetRevenue" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PotentialTaxLiabilityDueToDisallowanceOfCertainInterestDeductions" id="syna_PotentialTaxLiabilityDueToDisallowanceOfCertainInterestDeductions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PurchaseAndSaleAgreementDate" id="syna_PurchaseAndSaleAgreementDate" type="xbrli:dateItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PurchasePriceToAcquireLandAndOfficeBuildingsUnderPurchaseAndSaleAgreement" id="syna_PurchasePriceToAcquireLandAndOfficeBuildingsUnderPurchaseAndSaleAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReducedPurchasePriceToAcquireLandAndOfficeBuildingsUnderAmendedPurchaseAndSaleAgreement" id="syna_ReducedPurchasePriceToAcquireLandAndOfficeBuildingsUnderAmendedPurchaseAndSaleAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RevenueRecognitionTextBlock" id="syna_RevenueRecognitionTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfAccruedLiabilitiesLineItems" id="syna_ScheduleOfAccruedLiabilitiesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfAccruedLiabilitiesTable" id="syna_ScheduleOfAccruedLiabilitiesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfFiniteLivedIntangibleAssetsAmortizationExpenseTable" id="syna_ScheduleOfFiniteLivedIntangibleAssetsAmortizationExpenseTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlansNameAxis" id="syna_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlansNameAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="ScheduleOfShareBasedCompensationDsusActivityTableTextBlock" id="syna_ScheduleOfShareBasedCompensationDsusActivityTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfStockOptionsLineItems" id="syna_ScheduleOfStockOptionsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfStockOptionsTable" id="syna_ScheduleOfStockOptionsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardIntrinsicValueClosingPrice" id="syna_ShareBasedCompensationArrangementByShareBasedPaymentAwardIntrinsicValueClosingPrice" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlansNameDomain" id="syna_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlansNameDomain" type="nonnum:domainItemType" abstract="true" 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="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>





