-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 K+8y5GKQlb9VKbRlV+DQqP/5kIScitPQaMc6zE/XMYJNix9rUJm29aqlFc23eoB4
 XVeKuojR0hRh1ajjcu5WwA==

<SEC-DOCUMENT>0001246948-03-000001.txt : 20030627
<SEC-HEADER>0001246948-03-000001.hdr.sgml : 20030627
<ACCEPTANCE-DATETIME>20030626184149
ACCESSION NUMBER:		0001246948-03-000001
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030623
FILED AS OF DATE:		20030627

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MCGOVERN JOHN W
		CENTRAL INDEX KEY:			0001246948

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-29823
		FILM NUMBER:		03759395

	MAIL ADDRESS:	
		STREET 1:		4635 BOSTON LANE
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78735

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SILICON LABORATORIES INC
		CENTRAL INDEX KEY:			0001038074
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				742793174
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4635 BOSTON LN
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78735

	MAIL ADDRESS:	
		STREET 1:		4635 BOSTON LANE
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78735
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>

<ownershipDocument>

    <documentType>3</documentType>

    <periodOfReport>2003-06-23</periodOfReport>


    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001038074</issuerCik>
        <issuerName>SILICON LABORATORIES INC</issuerName>
        <issuerTradingSymbol>SLAB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001246948</rptOwnerCik>
            <rptOwnerName>MCGOVERN JOHN W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Financial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common Stock, $0.0001 par value</value>
        </securityTitle>
        <transactionAmounts>
            <transactionShares>
                <value>76200</value>
            </transactionShares>
        </transactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common Stock, $0.0001 par value</value>
        </securityTitle>
        <transactionAmounts>
            <transactionShares>
                <value>70000</value>
            </transactionShares>
        </transactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>I</value>
            </directOrIndirectOwnership>
            <natureOfOwnership>
                <value>By JMAP Investments Ltd.</value>
                <footnoteId id="F1"/>
            </natureOfOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Incentive Stock Option (right to buy)</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>0.25</value>
        </conversionOrExercisePrice>
        <exerciseDate>
            <value>1998-06-23</value>
            <footnoteId id="F2"/>
        </exerciseDate>
        <expirationDate>
            <value>2008-06-23</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common Stock, $0.0001 par value</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>32000</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Incentive Stock Option (right to buy)</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>1.75</value>
        </conversionOrExercisePrice>
        <exerciseDate>
            <value>1999-07-20</value>
            <footnoteId id="F2"/>
        </exerciseDate>
        <expirationDate>
            <value>2009-07-20</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common Stock, $0.0001 par value</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>18000</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Incentive Stock Option (right to buy)</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>48.88</value>
        </conversionOrExercisePrice>
        <exerciseDate>
            <value>2002-01-28</value>
            <footnoteId id="F3"/>
        </exerciseDate>
        <expirationDate>
            <value>2010-09-20</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common Stock, $0.0001 par value</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>6137</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Non-Qualified Stock Option (right to buy)</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>48.88</value>
        </conversionOrExercisePrice>
        <exerciseDate>
            <value>2002-01-28</value>
            <footnoteId id="F3"/>
        </exerciseDate>
        <expirationDate>
            <value>2010-09-20</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common Stock, $0.0001 par value</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>13863</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Non-Qualified Stock Option (right to buy)</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>15.44</value>
        </conversionOrExercisePrice>
        <exerciseDate>
            <value>2001-04-16</value>
            <footnoteId id="F4"/>
        </exerciseDate>
        <expirationDate>
            <value>2011-03-16</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common Stock, $0.0001 par value</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>20000</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Non-Qualified Stock Option (right to buy)</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>22.63</value>
        </conversionOrExercisePrice>
        <exerciseDate>
            <value>2001-08-18</value>
            <footnoteId id="F5"/>
        </exerciseDate>
        <expirationDate>
            <value>2011-07-18</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common Stock, $0.0001 par value</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>20000</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <derivativeSecurity>
        <securityTitle>
            <value>Non-Qualified Stock Option (right to buy)</value>
        </securityTitle>
        <conversionOrExercisePrice>
            <value>15.1</value>
        </conversionOrExercisePrice>
        <exerciseDate>
            <value>2002-01-28</value>
            <footnoteId id="F3"/>
        </exerciseDate>
        <expirationDate>
            <value>2011-09-21</value>
        </expirationDate>
        <underlyingSecurity>
            <underlyingSecurityTitle>
                <value>Common Stock, $0.0001 par value</value>
            </underlyingSecurityTitle>
            <underlyingSecurityShares>
                <value>20000</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </derivativeSecurity>

    <footnotes>
        <footnote id="F1">JMAP Investments Ltd. is a limited partnership of which the reporting person and his wife are the sole general partners and of which the reporting person, his wife, and the McGovern Family Trust are the sole limited partners.</footnote>
        <footnote id="F2">This option was immediately exercisable and vests in a series of thirty-six (36) equal monthly installments upon the optionee's completion of each additional month of service measured from December 28, 2001.</footnote>
        <footnote id="F3">This option becomes exercisable and vests in a series of thirty-six (36) equal monthly installments upon the optionee's completion of each additional month of service measured from December 28, 2001.</footnote>
        <footnote id="F4">This option becomes exercisable and vests in a series of sixty (60) equal monthly installments upon the optionee's completion of each additional month of service measured from March 16, 2001.</footnote>
        <footnote id="F5">This option becomes exercisable and vests in a series of sixty (60) equal monthly installments upon the optionee's completion of each additional month of service measured from July 18, 2001.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>John W. McGovern</signatureName>
        <signatureDate>2003-06-26</signatureDate>
    </ownerSignature>

</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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