<XBRL>
<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
<!-- Generated by Fujitsu XWand B0126 -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:slab="http://www.silabs.com/20110101" xmlns:xbrli="http://www.xbrl.org/2003/instance" 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">
  <roleRef roleURI="http://www.silabs.com/role/StatementOfStockholdersEquity" xlink:href="slab-20110101.xsd#StatementOfStockholdersEquity" xlink:type="simple" />
  <roleRef roleURI="http://www.silabs.com/role/BalanceSheet" xlink:href="slab-20110101.xsd#BalanceSheet" xlink:type="simple" />
  <roleRef roleURI="http://www.silabs.com/role/CashFlows" xlink:href="slab-20110101.xsd#CashFlows" xlink:type="simple" />
  <roleRef roleURI="http://www.silabs.com/role/StatementOfIncome" xlink:href="slab-20110101.xsd#StatementOfIncome" xlink:type="simple" />
  <roleRef roleURI="http://www.silabs.com/role/StatementOfStockholdersEquityCalc2" xlink:href="slab-20110101.xsd#StatementOfStockholdersEquityCalc2" xlink:type="simple" />
  <calculationLink xlink:role="http://www.silabs.com/role/StatementOfIncome" xlink:type="extended">
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProfitLoss" xlink:label="ProfitLoss" xlink:title="ProfitLoss" xlink:type="locator" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:title="IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ProfitLoss" xlink:title="calculation: ProfitLoss to IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:to="IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="OperatingIncomeLoss" xlink:title="OperatingIncomeLoss" xlink:type="locator" />
    <calculationArc order="1.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:title="calculation: IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments to OperatingIncomeLoss" xlink:to="OperatingIncomeLoss" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_GrossProfit" xlink:label="GrossProfit" xlink:title="GrossProfit" xlink:type="locator" />
    <calculationArc order="1.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="OperatingIncomeLoss" xlink:title="calculation: OperatingIncomeLoss to GrossProfit" xlink:to="GrossProfit" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SalesRevenueNet" xlink:label="SalesRevenueNet" xlink:title="SalesRevenueNet" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="GrossProfit" xlink:title="calculation: GrossProfit to SalesRevenueNet" xlink:to="SalesRevenueNet" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CostOfGoodsSold" xlink:label="CostOfGoodsSold" xlink:title="CostOfGoodsSold" xlink:type="locator" />
    <calculationArc order="2.0" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="GrossProfit" xlink:title="calculation: GrossProfit to CostOfGoodsSold" xlink:to="CostOfGoodsSold" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="OperatingExpenses" xlink:title="OperatingExpenses" xlink:type="locator" />
    <calculationArc order="2.0" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="OperatingIncomeLoss" xlink:title="calculation: OperatingIncomeLoss to OperatingExpenses" xlink:to="OperatingExpenses" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost" xlink:label="ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost" xlink:title="ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="OperatingExpenses" xlink:title="calculation: OperatingExpenses to ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost" xlink:to="ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="SellingGeneralAndAdministrativeExpense" xlink:title="SellingGeneralAndAdministrativeExpense" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="OperatingExpenses" xlink:title="calculation: OperatingExpenses to SellingGeneralAndAdministrativeExpense" xlink:to="SellingGeneralAndAdministrativeExpense" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ResearchAndDevelopmentInProcess" xlink:label="ResearchAndDevelopmentInProcess" xlink:title="ResearchAndDevelopmentInProcess" xlink:type="locator" />
    <calculationArc order="3.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="OperatingExpenses" xlink:title="calculation: OperatingExpenses to ResearchAndDevelopmentInProcess" xlink:to="ResearchAndDevelopmentInProcess" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="InvestmentIncomeInterest" xlink:title="InvestmentIncomeInterest" xlink:type="locator" />
    <calculationArc order="2.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:title="calculation: IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments to InvestmentIncomeInterest" xlink:to="InvestmentIncomeInterest" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InterestExpense" xlink:label="InterestExpense" xlink:title="InterestExpense" xlink:type="locator" />
    <calculationArc order="3.0" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:title="calculation: IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments to InterestExpense" xlink:to="InterestExpense" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="OtherNonoperatingIncomeExpense" xlink:title="OtherNonoperatingIncomeExpense" xlink:type="locator" />
    <calculationArc order="4.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:title="calculation: IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments to OtherNonoperatingIncomeExpense" xlink:to="OtherNonoperatingIncomeExpense" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="IncomeTaxExpenseBenefit" xlink:title="IncomeTaxExpenseBenefit" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ProfitLoss" xlink:title="calculation: ProfitLoss to IncomeTaxExpenseBenefit" xlink:to="IncomeTaxExpenseBenefit" xlink:type="arc" />
  </calculationLink>
  <calculationLink xlink:role="http://www.silabs.com/role/CashFlows" xlink:type="extended">
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:title="CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:type="locator" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="NetCashProvidedByUsedInOperatingActivities" xlink:title="NetCashProvidedByUsedInOperatingActivities" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:title="calculation: CashAndCashEquivalentsPeriodIncreaseDecrease to NetCashProvidedByUsedInOperatingActivities" xlink:to="NetCashProvidedByUsedInOperatingActivities" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProfitLoss" xlink:label="ProfitLoss" xlink:title="ProfitLoss" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to ProfitLoss" xlink:to="ProfitLoss" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_Depreciation" xlink:label="Depreciation" xlink:title="Depreciation" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to Depreciation" xlink:to="Depreciation" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="GainLossOnSaleOfPropertyPlantEquipment" xlink:title="GainLossOnSaleOfPropertyPlantEquipment" xlink:type="locator" />
    <calculationArc order="3.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to GainLossOnSaleOfPropertyPlantEquipment" xlink:to="GainLossOnSaleOfPropertyPlantEquipment" xlink:type="arc" />
    <loc xlink:href="slab-20110101.xsd#slab_AmortizationOfIntangiblesAndOtherAssets" xlink:label="AmortizationOfIntangiblesAndOtherAssets" xlink:title="AmortizationOfIntangiblesAndOtherAssets" xlink:type="locator" />
    <calculationArc order="4.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to AmortizationOfIntangiblesAndOtherAssets" xlink:to="AmortizationOfIntangiblesAndOtherAssets" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="ShareBasedCompensation" xlink:title="ShareBasedCompensation" xlink:type="locator" />
    <calculationArc order="5.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to ShareBasedCompensation" xlink:to="ShareBasedCompensation" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" xlink:label="ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" xlink:title="ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" xlink:type="locator" />
    <calculationArc order="8.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" xlink:to="ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="DeferredIncomeTaxExpenseBenefit" xlink:title="DeferredIncomeTaxExpenseBenefit" xlink:type="locator" />
    <calculationArc order="9.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to DeferredIncomeTaxExpenseBenefit" xlink:to="DeferredIncomeTaxExpenseBenefit" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="IncreaseDecreaseInAccountsReceivable" xlink:title="IncreaseDecreaseInAccountsReceivable" xlink:type="locator" />
    <calculationArc order="10.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to IncreaseDecreaseInAccountsReceivable" xlink:to="IncreaseDecreaseInAccountsReceivable" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories" xlink:label="IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories" xlink:title="IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories" xlink:type="locator" />
    <calculationArc order="11.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories" xlink:to="IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:title="IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:type="locator" />
    <calculationArc order="12.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="IncreaseDecreaseInAccountsPayable" xlink:title="IncreaseDecreaseInAccountsPayable" xlink:type="locator" />
    <calculationArc order="13.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to IncreaseDecreaseInAccountsPayable" xlink:to="IncreaseDecreaseInAccountsPayable" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="IncreaseDecreaseInAccruedLiabilities" xlink:title="IncreaseDecreaseInAccruedLiabilities" xlink:type="locator" />
    <calculationArc order="14.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to IncreaseDecreaseInAccruedLiabilities" xlink:to="IncreaseDecreaseInAccruedLiabilities" xlink:type="arc" />
    <loc xlink:href="slab-20110101.xsd#slab_IncreaseDecreaseInDeferredIncomeOnShipmentsToDistributors" xlink:label="IncreaseDecreaseInDeferredIncomeOnShipmentsToDistributors" xlink:title="IncreaseDecreaseInDeferredIncomeOnShipmentsToDistributors" xlink:type="locator" />
    <calculationArc order="15.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to IncreaseDecreaseInDeferredIncomeOnShipmentsToDistributors" xlink:to="IncreaseDecreaseInDeferredIncomeOnShipmentsToDistributors" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:label="IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:title="IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:type="locator" />
    <calculationArc order="16.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:to="IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:type="arc" />
    <loc xlink:href="slab-20110101.xsd#slab_TaxBenefitDetrimentFromShareBasedCompensation" xlink:label="TaxBenefitDetrimentFromShareBasedCompensation" xlink:title="TaxBenefitDetrimentFromShareBasedCompensation" xlink:type="locator" />
    <calculationArc order="7.0" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to TaxBenefitDetrimentFromShareBasedCompensation" xlink:to="TaxBenefitDetrimentFromShareBasedCompensation" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ResearchAndDevelopmentInProcess" xlink:label="ResearchAndDevelopmentInProcess" xlink:title="ResearchAndDevelopmentInProcess" xlink:type="locator" />
    <calculationArc order="6.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:title="calculation: NetCashProvidedByUsedInOperatingActivities to ResearchAndDevelopmentInProcess" xlink:to="ResearchAndDevelopmentInProcess" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="NetCashProvidedByUsedInInvestingActivities" xlink:title="NetCashProvidedByUsedInInvestingActivities" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:title="calculation: CashAndCashEquivalentsPeriodIncreaseDecrease to NetCashProvidedByUsedInInvestingActivities" xlink:to="NetCashProvidedByUsedInInvestingActivities" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt" xlink:label="PaymentsToAcquireAvailableForSaleSecuritiesDebt" xlink:title="PaymentsToAcquireAvailableForSaleSecuritiesDebt" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:title="calculation: NetCashProvidedByUsedInInvestingActivities to PaymentsToAcquireAvailableForSaleSecuritiesDebt" xlink:to="PaymentsToAcquireAvailableForSaleSecuritiesDebt" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:label="ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:title="ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:title="calculation: NetCashProvidedByUsedInInvestingActivities to ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:to="ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="PaymentsToAcquirePropertyPlantAndEquipment" xlink:title="PaymentsToAcquirePropertyPlantAndEquipment" xlink:type="locator" />
    <calculationArc order="3.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:title="calculation: NetCashProvidedByUsedInInvestingActivities to PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="PaymentsToAcquirePropertyPlantAndEquipment" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets" xlink:label="PaymentsToAcquireProductiveAssets" xlink:title="PaymentsToAcquireProductiveAssets" xlink:type="locator" />
    <calculationArc order="5.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:title="calculation: NetCashProvidedByUsedInInvestingActivities to PaymentsToAcquireProductiveAssets" xlink:to="PaymentsToAcquireProductiveAssets" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:title="PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:type="locator" />
    <calculationArc order="6.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:title="calculation: NetCashProvidedByUsedInInvestingActivities to PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:to="PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets" xlink:label="ProceedsFromSaleOfProductiveAssets" xlink:title="ProceedsFromSaleOfProductiveAssets" xlink:type="locator" />
    <calculationArc order="4.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:title="calculation: NetCashProvidedByUsedInInvestingActivities to ProceedsFromSaleOfProductiveAssets" xlink:to="ProceedsFromSaleOfProductiveAssets" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="NetCashProvidedByUsedInFinancingActivities" xlink:title="NetCashProvidedByUsedInFinancingActivities" xlink:type="locator" />
    <calculationArc order="3.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:title="calculation: CashAndCashEquivalentsPeriodIncreaseDecrease to NetCashProvidedByUsedInFinancingActivities" xlink:to="NetCashProvidedByUsedInFinancingActivities" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="ProceedsFromIssuanceOfCommonStock" xlink:title="ProceedsFromIssuanceOfCommonStock" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInFinancingActivities" xlink:title="calculation: NetCashProvidedByUsedInFinancingActivities to ProceedsFromIssuanceOfCommonStock" xlink:to="ProceedsFromIssuanceOfCommonStock" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:label="ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:title="ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInFinancingActivities" xlink:title="calculation: NetCashProvidedByUsedInFinancingActivities to ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:to="ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="PaymentsForRepurchaseOfCommonStock" xlink:title="PaymentsForRepurchaseOfCommonStock" xlink:type="locator" />
    <calculationArc order="3.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="NetCashProvidedByUsedInFinancingActivities" xlink:title="calculation: NetCashProvidedByUsedInFinancingActivities to PaymentsForRepurchaseOfCommonStock" xlink:to="PaymentsForRepurchaseOfCommonStock" xlink:type="arc" />
  </calculationLink>
  <calculationLink xlink:role="http://www.silabs.com/role/BalanceSheet" xlink:type="extended">
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_Assets" xlink:label="Assets" xlink:title="Assets" xlink:type="locator" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="AssetsCurrent" xlink:title="AssetsCurrent" xlink:type="locator" />
    <calculationArc order="1.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="Assets" xlink:title="calculation: Assets to AssetsCurrent" xlink:to="AssetsCurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="CashAndCashEquivalentsAtCarryingValue" xlink:title="CashAndCashEquivalentsAtCarryingValue" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="AssetsCurrent" xlink:title="calculation: AssetsCurrent to CashAndCashEquivalentsAtCarryingValue" xlink:to="CashAndCashEquivalentsAtCarryingValue" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_MarketableSecuritiesCurrent" xlink:label="MarketableSecuritiesCurrent" xlink:title="MarketableSecuritiesCurrent" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="AssetsCurrent" xlink:title="calculation: AssetsCurrent to MarketableSecuritiesCurrent" xlink:to="MarketableSecuritiesCurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="AccountsReceivableNetCurrent" xlink:title="AccountsReceivableNetCurrent" xlink:type="locator" />
    <calculationArc order="3.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="AssetsCurrent" xlink:title="calculation: AssetsCurrent to AccountsReceivableNetCurrent" xlink:to="AccountsReceivableNetCurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsNetCurrent" xlink:label="DeferredTaxAssetsNetCurrent" xlink:title="DeferredTaxAssetsNetCurrent" xlink:type="locator" />
    <calculationArc order="5.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="AssetsCurrent" xlink:title="calculation: AssetsCurrent to DeferredTaxAssetsNetCurrent" xlink:to="DeferredTaxAssetsNetCurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="OtherAssetsCurrent" xlink:title="OtherAssetsCurrent" xlink:type="locator" />
    <calculationArc order="6.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="AssetsCurrent" xlink:title="calculation: AssetsCurrent to OtherAssetsCurrent" xlink:to="OtherAssetsCurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InventoryNet" xlink:label="InventoryNet" xlink:title="InventoryNet" xlink:type="locator" />
    <calculationArc order="4.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="AssetsCurrent" xlink:title="calculation: AssetsCurrent to InventoryNet" xlink:to="InventoryNet" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecuritiesNoncurrent" xlink:label="AvailableForSaleSecuritiesDebtSecuritiesNoncurrent" xlink:title="AvailableForSaleSecuritiesDebtSecuritiesNoncurrent" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="Assets" xlink:title="calculation: Assets to AvailableForSaleSecuritiesDebtSecuritiesNoncurrent" xlink:to="AvailableForSaleSecuritiesDebtSecuritiesNoncurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="PropertyPlantAndEquipmentNet" xlink:title="PropertyPlantAndEquipmentNet" xlink:type="locator" />
    <calculationArc order="3.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="Assets" xlink:title="calculation: Assets to PropertyPlantAndEquipmentNet" xlink:to="PropertyPlantAndEquipmentNet" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_Goodwill" xlink:label="Goodwill" xlink:title="Goodwill" xlink:type="locator" />
    <calculationArc order="4.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="Assets" xlink:title="calculation: Assets to Goodwill" xlink:to="Goodwill" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="OtherAssetsNoncurrent" xlink:title="OtherAssetsNoncurrent" xlink:type="locator" />
    <calculationArc order="6.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="Assets" xlink:title="calculation: Assets to OtherAssetsNoncurrent" xlink:to="OtherAssetsNoncurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="IntangibleAssetsNetExcludingGoodwill" xlink:title="IntangibleAssetsNetExcludingGoodwill" xlink:type="locator" />
    <calculationArc order="5.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="Assets" xlink:title="calculation: Assets to IntangibleAssetsNetExcludingGoodwill" xlink:to="IntangibleAssetsNetExcludingGoodwill" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="LiabilitiesAndStockholdersEquity" xlink:title="LiabilitiesAndStockholdersEquity" xlink:type="locator" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_Liabilities" xlink:label="Liabilities" xlink:title="Liabilities" xlink:type="locator" />
    <calculationArc order="1.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="LiabilitiesAndStockholdersEquity" xlink:title="calculation: LiabilitiesAndStockholdersEquity to Liabilities" xlink:to="Liabilities" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="LiabilitiesCurrent" xlink:title="LiabilitiesCurrent" xlink:type="locator" />
    <calculationArc order="1.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="Liabilities" xlink:title="calculation: Liabilities to LiabilitiesCurrent" xlink:to="LiabilitiesCurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="AccountsPayableCurrent" xlink:title="AccountsPayableCurrent" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="LiabilitiesCurrent" xlink:title="calculation: LiabilitiesCurrent to AccountsPayableCurrent" xlink:to="AccountsPayableCurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="AccruedLiabilitiesCurrent" xlink:title="AccruedLiabilitiesCurrent" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="LiabilitiesCurrent" xlink:title="calculation: LiabilitiesCurrent to AccruedLiabilitiesCurrent" xlink:to="AccruedLiabilitiesCurrent" xlink:type="arc" />
    <loc xlink:href="slab-20110101.xsd#slab_DeferredIncomeOnShipmentsToDistributorsCurrent" xlink:label="DeferredIncomeOnShipmentsToDistributorsCurrent" xlink:title="DeferredIncomeOnShipmentsToDistributorsCurrent" xlink:type="locator" />
    <calculationArc order="3.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="LiabilitiesCurrent" xlink:title="calculation: LiabilitiesCurrent to DeferredIncomeOnShipmentsToDistributorsCurrent" xlink:to="DeferredIncomeOnShipmentsToDistributorsCurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:label="AccruedIncomeTaxesCurrent" xlink:title="AccruedIncomeTaxesCurrent" xlink:type="locator" />
    <calculationArc order="4.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="LiabilitiesCurrent" xlink:title="calculation: LiabilitiesCurrent to AccruedIncomeTaxesCurrent" xlink:to="AccruedIncomeTaxesCurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="LiabilitiesNoncurrent" xlink:title="LiabilitiesNoncurrent" xlink:type="locator" />
    <calculationArc order="2.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="Liabilities" xlink:title="calculation: Liabilities to LiabilitiesNoncurrent" xlink:to="LiabilitiesNoncurrent" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" />
    <calculationArc order="2.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="LiabilitiesAndStockholdersEquity" xlink:title="calculation: LiabilitiesAndStockholdersEquity to StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="PreferredStockValue" xlink:title="PreferredStockValue" xlink:type="locator" />
    <calculationArc order="1.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="calculation: StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest to PreferredStockValue" xlink:to="PreferredStockValue" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CommonStockValue" xlink:label="CommonStockValue" xlink:title="CommonStockValue" xlink:type="locator" />
    <calculationArc order="2.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="calculation: StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest to CommonStockValue" xlink:to="CommonStockValue" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="RetainedEarningsAccumulatedDeficit" xlink:title="RetainedEarningsAccumulatedDeficit" xlink:type="locator" />
    <calculationArc order="4.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="calculation: StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest to RetainedEarningsAccumulatedDeficit" xlink:to="RetainedEarningsAccumulatedDeficit" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:title="AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:type="locator" />
    <calculationArc order="5.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="calculation: StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest to AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:to="AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="AdditionalPaidInCapitalCommonStock" xlink:title="AdditionalPaidInCapitalCommonStock" xlink:type="locator" />
    <calculationArc order="3.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="calculation: StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest to AdditionalPaidInCapitalCommonStock" xlink:to="AdditionalPaidInCapitalCommonStock" xlink:type="arc" />
  </calculationLink>
  <calculationLink xlink:role="http://www.silabs.com/role/StatementOfStockholdersEquity" xlink:type="extended">
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockholdersEquityPeriodIncreaseDecrease" xlink:label="StockholdersEquityPeriodIncreaseDecrease" xlink:title="StockholdersEquityPeriodIncreaseDecrease" xlink:type="locator" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation" xlink:label="AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation" xlink:title="AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation" xlink:type="locator" />
    <calculationArc order="5.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityPeriodIncreaseDecrease" xlink:title="calculation: StockholdersEquityPeriodIncreaseDecrease to AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation" xlink:to="AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:title="AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:type="locator" />
    <calculationArc order="7.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityPeriodIncreaseDecrease" xlink:title="calculation: StockholdersEquityPeriodIncreaseDecrease to AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:to="AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions" xlink:label="StockIssuedDuringPeriodValueAcquisitions" xlink:title="StockIssuedDuringPeriodValueAcquisitions" xlink:type="locator" />
    <calculationArc order="8.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityPeriodIncreaseDecrease" xlink:title="calculation: StockholdersEquityPeriodIncreaseDecrease to StockIssuedDuringPeriodValueAcquisitions" xlink:to="StockIssuedDuringPeriodValueAcquisitions" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:label="StockRepurchasedAndRetiredDuringPeriodValue" xlink:title="StockRepurchasedAndRetiredDuringPeriodValue" xlink:type="locator" />
    <calculationArc order="6.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityPeriodIncreaseDecrease" xlink:title="calculation: StockholdersEquityPeriodIncreaseDecrease to StockRepurchasedAndRetiredDuringPeriodValue" xlink:to="StockRepurchasedAndRetiredDuringPeriodValue" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:label="StockIssuedDuringPeriodValueShareBasedCompensation" xlink:title="StockIssuedDuringPeriodValueShareBasedCompensation" xlink:type="locator" />
    <calculationArc order="4.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityPeriodIncreaseDecrease" xlink:title="calculation: StockholdersEquityPeriodIncreaseDecrease to StockIssuedDuringPeriodValueShareBasedCompensation" xlink:to="StockIssuedDuringPeriodValueShareBasedCompensation" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProfitLoss" xlink:label="ProfitLoss" xlink:title="ProfitLoss" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityPeriodIncreaseDecrease" xlink:title="calculation: StockholdersEquityPeriodIncreaseDecrease to ProfitLoss" xlink:to="ProfitLoss" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:title="OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityPeriodIncreaseDecrease" xlink:title="calculation: StockholdersEquityPeriodIncreaseDecrease to OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:to="OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:label="OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:title="OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:type="locator" />
    <calculationArc order="3.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockholdersEquityPeriodIncreaseDecrease" xlink:title="calculation: StockholdersEquityPeriodIncreaseDecrease to OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:to="OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:label="StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:title="StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:type="locator" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesAcquisitions" xlink:label="StockIssuedDuringPeriodSharesAcquisitions" xlink:title="StockIssuedDuringPeriodSharesAcquisitions" xlink:type="locator" />
    <calculationArc order="4.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:title="calculation: StockIssuedDuringPeriodSharesPeriodIncreaseDecrease to StockIssuedDuringPeriodSharesAcquisitions" xlink:to="StockIssuedDuringPeriodSharesAcquisitions" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:label="StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:title="StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:title="calculation: StockIssuedDuringPeriodSharesPeriodIncreaseDecrease to StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:to="StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" xlink:label="StockRepurchasedAndRetiredDuringPeriodShares" xlink:title="StockRepurchasedAndRetiredDuringPeriodShares" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:title="calculation: StockIssuedDuringPeriodSharesPeriodIncreaseDecrease to StockRepurchasedAndRetiredDuringPeriodShares" xlink:to="StockRepurchasedAndRetiredDuringPeriodShares" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockGrantedDuringPeriodSharesSharebasedCompensation" xlink:label="StockGrantedDuringPeriodSharesSharebasedCompensation" xlink:title="StockGrantedDuringPeriodSharesSharebasedCompensation" xlink:type="locator" />
    <calculationArc order="3.0" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="StockIssuedDuringPeriodSharesPeriodIncreaseDecrease" xlink:title="calculation: StockIssuedDuringPeriodSharesPeriodIncreaseDecrease to StockGrantedDuringPeriodSharesSharebasedCompensation" xlink:to="StockGrantedDuringPeriodSharesSharebasedCompensation" xlink:type="arc" />
  </calculationLink>
  <calculationLink xlink:role="http://www.silabs.com/role/StatementOfStockholdersEquityCalc2" xlink:type="extended">
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:label="ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:title="ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:title="OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:type="locator" />
    <calculationArc order="2.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:title="calculation: ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest to OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:to="OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:label="OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:title="OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:type="locator" />
    <calculationArc order="3.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:title="calculation: ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest to OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:to="OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:type="arc" />
    <loc xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProfitLoss" xlink:label="ProfitLoss" xlink:title="ProfitLoss" xlink:type="locator" />
    <calculationArc order="1.0" use="optional" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:title="calculation: ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest to ProfitLoss" xlink:to="ProfitLoss" xlink:type="arc" />
  </calculationLink>
</linkbase>
</XBRL>
