    <SEC-DOCUMENT>0001104659-17-072348-index.html : 20171207
    <SEC-HEADER>0001104659-17-072348.hdr.sgml : 20171207
    <ACCEPTANCE-DATETIME>20171207172611
    ACCESSION NUMBER:		0001104659-17-072348
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		18
    CONFORMED PERIOD OF REPORT:	20171207
    ITEM INFORMATION:		Other Events
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20171207
    DATE AS OF CHANGE:		20171207

    FILER:

    	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:			1230

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-29823
    		FILM NUMBER:		171245587

    	BUSINESS ADDRESS:
    		STREET 1:		400 W CESAR CHAVEZ
    		CITY:			AUSTIN
    		STATE:			TX
    		ZIP:			78701
    		BUSINESS PHONE:		5124168500

    	MAIL ADDRESS:
    		STREET 1:		400 W CESAR CHAVEZ
    		CITY:			AUSTIN
    		STATE:			TX
    		ZIP:			78701
    </SEC-HEADER>
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    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>a17-28163_18k.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: a17-28163_18k.htm

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    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>a17-28163_1ex99d1.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: a17-28163_1ex99d1.htm

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    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>a17-28163_1ex99d2.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 3 - file: a17-28163_1ex99d2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.3
    <SEQUENCE>4
    <FILENAME>a17-28163_1ex99d3.htm
    <DESCRIPTION>EX-99.3
    <TEXT>
    Document 4 - file: a17-28163_1ex99d3.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.4
    <SEQUENCE>5
    <FILENAME>a17-28163_1ex99d4.htm
    <DESCRIPTION>EX-99.4
    <TEXT>
    Document 5 - file: a17-28163_1ex99d4.htm

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    <TYPE>EX-99.5
    <SEQUENCE>6
    <FILENAME>a17-28163_1ex99d5.htm
    <DESCRIPTION>EX-99.5
    <TEXT>
    Document 6 - file: a17-28163_1ex99d5.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.6
    <SEQUENCE>7
    <FILENAME>a17-28163_1ex99d6.htm
    <DESCRIPTION>EX-99.6
    <TEXT>
    Document 7 - file: a17-28163_1ex99d6.htm

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    <DOCUMENT>
    <TYPE>GRAPHIC
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    <FILENAME>g281631mui001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g281631mui001.jpg

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    <SEQUENCE>9
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g281631mui002.jpg

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    <SEQUENCE>10
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g281631mwi001.gif

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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g281631mwi002.gif

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    <SEQUENCE>12
    <FILENAME>g281631mwi003.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g281631mwi003.gif

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    <SEQUENCE>13
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: g281631mwi004.gif

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    Document 14 - file: g281631mwi005.gif

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    Document 15 - file: g281631mwi006.gif

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    <SEQUENCE>16
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: g281631mwi007.gif

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    <SEQUENCE>17
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: g281631mwi008.gif

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    <SEQUENCE>18
    <FILENAME>g281631mwi009.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: g281631mwi009.gif

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