Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Tuttle George Tyson
 2. Date of Event Requiring Statement (Month/Day/Year)
05/12/2011		 3. Issuer Name and Ticker or Trading Symbol
SILICON LABORATORIES INC [SLAB]
(Last)
(First)
(Middle)
400 WEST CESAR CHAVEZ		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
COO
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

AUSTIN, TX 78701		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock, $0.0001 par value 60,347 (1)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Non-Qualified Stock Option (right to buy) 02/15/2008(2) 02/15/2017 Common Stock, $0.0001 par value 13,000 $ 32.11 D  
Non-Qualified Stock Option (right to buy) 02/15/2009(3) 02/15/2018 Common Stock, $0.0001 par value 11,511 $ 31.96 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Tuttle George Tyson
400 WEST CESAR CHAVEZ
AUSTIN, TX 78701		       COO  

Signatures

George Tyson Tuttle 05/16/2011
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Includes 43,795 restricted stock units (RSUs) that will entitle Reporting Person to receive one share of common stock per RSU. 13,911 RSUs will vest on February 15, 2012 and will be settled pursuant to the terms of the Issuer's 2000 Stock Incentive Plan. 7,169 RSUs will vest on February 15, 2012, 14,339 RSUs will vest on February 15, 2013, and 8,376 RSUs will vest on February 15, 2014 and will be settled pursuant to the terms of the Issuer's 2009 Stock Incentive Plan.
(2) Originally granted 30,000 option shares. Option vests and becomes exercisable with respect to (i) twenty percent (20%) of the total granted option shares on the date exercisable and (ii) the balance of the total granted option shares in a series of forty-eight (48) successive monthly installments over the forty-eight (48) month period measured from the date exercisable.
(3) Originally granted 21,250 option shares. Option vests and becomes exercisable with respect to (i) twenty-five percent (25%) of the total granted option shares on the date exercisable and (ii) the balance of the total granted option shares in a series of thirty-six (36) successive monthly installments over the thirty-six (36) month period measured from the date exercisable.

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