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 *
  Walsh Paul V Jr
 2. Date of Event Requiring Statement (Month/Day/Year)
05/12/2006		 3. Issuer Name and Ticker or Trading Symbol
SILICON LABORATORIES INC [SLAB]
(Last)
(First)
(Middle)
4635 BOSTON LANE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Interim Vice President & CFO
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

AUSTIN, TX 78735		 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 7,833 (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
Incentive Stock Option (right to buy) 05/02/2006(2) 05/02/2015 Common Stock, $0.0001 par value 6,025 $ 25.07 D  
Incentive Stock Option (right to buy) 02/02/2005(2) 02/02/2014 Common Stock, $0.0001 par value 5,167 $ 50.48 D  
Non-Qualified Stock Option (right to buy) 05/02/2006(2) 05/02/2015 Common Stock, $0.0001 par value 3,975 $ 25.07 D  
Non-Qualified Stock Option (right to buy) 02/02/2005(2) 02/02/2014 Common Stock, $0.0001 par value 4,833 $ 50.48 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Walsh Paul V Jr
4635 BOSTON LANE
AUSTIN, TX 78735		       Interim Vice President & CFO  

Signatures

Paul V Walsh Jr. 05/19/2006
**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) Reflects restricted stock units that represent the contingent right to receive one share of common stock per restricted stock unit. 4,500 restricted stock units vest at the rate of one-third (1/3) on the third, fourth and fifth anniversary dates after September 12, 2005. 3333 restricted stock units vest at the rate of 20% on each of the first five anniversary dates after September 12, 2005. All restricted stock units will be settled pursuant to the terms of the Issuer's 2000 Stock Incentive Plan.
(2) Option vests and becomes exercisable with respect to (i) twenty percent (20%) of the option shares upon optionee's completion of one year of service and (ii) the balance of the option shares in a series of forty-eight (48) successive monthly installments over the forty-eight (48) month period measured from the date exercisable.

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