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 *   Rabinovitsj Daniel A 2. Date of Event Requiring Statement (Month/Day/Year) 04/25/2005 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) Vice President 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 3,541 D   Common Stock, $0.0001 par value 775 I D. Rabinovitsj GRAT Common Stock, $0.0001 par value 775 I E. Rabinovitsj GRAT Common Stock, $0.0001 par value 409 I by Spouse

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)	03/23/2001(1)	03/23/2010	Common Stock, $0.0001 par value	308	$ 31	D	Â
Incentive Stock Option (right to buy)	07/20/1999(2)	07/20/2009	Common Stock, $0.0001 par value	7,334	$ 1.75	D	Â
Incentive Stock Option (right to buy)	01/14/2004(3)	09/21/2011	Common Stock, $0.0001 par value	1,314	$ 15.1	D	Â
Incentive Stock Option (right to buy)	07/13/2005(4)	06/13/2012	Common Stock, $0.0001 par value	3,527	$ 24.3	D	Â
Incentive Stock Option (right to buy)	01/14/2004(5)	03/23/2010	Common Stock, $0.0001 par value	2,121	$ 31	D	Â
Non-Qualified Stock Option (right to buy)	03/23/2001(1)	03/23/2010	Common Stock, $0.0001 par value	360	$ 31	D	Â
Non-Qualified Stock Option (right to buy)	01/14/2004(3)	09/21/2011	Common Stock, $0.0001 par value	12,853	$ 15.1	D	Â
Non-Qualified Stock Option (right to buy)	04/16/2001(6)	03/16/2011	Common Stock, $0.0001 par value	3,250	$ 15.44	D	Â
Non-Qualified Stock Option (right to buy)	08/18/2001(7)	07/18/2011	Common Stock, $0.0001 par value	5,667	$ 22.63	D	Â
Non-Qualified Stock Option (right to buy)	07/13/2005(4)	06/13/2012	Common Stock, $0.0001 par value	3,973	$ 24.3	D	Â
Non-Qualified Stock Option (right to buy)	01/14/2004(5)	03/23/2010	Common Stock, $0.0001 par value	7,047	$ 31	D	Â
Non-Qualified Stock Option (right to buy)	08/10/2005(1)	08/10/2014	Common Stock, $0.0001 par value	10,000	$ 33.17	D	Â
Non-Qualified Stock Option (right to buy)	08/18/2004(1)	08/18/2013	Common Stock, $0.0001 par value	5,000	$ 38.5	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Rabinovitsj Daniel A 4635 BOSTON LANE AUSTIN, TX 78735	Â	Â	  Vice President	Â

Signatures

Daniel A. Rabinovitsj		05/03/2005
**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)	The 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 measured from the grant date 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 first year anniversary of the grant date.
(2)	This option becomes exercisable as it vests in a series of thirty-six (36) successive equal monthly installments measured from December 14, 2003.
(3)	This option becomes exercisable as it vests in a series of forty eight (48) equal monthly installments measured from December 14, 2003.
(4)	This option becomes exercisable as it vests in a series of twelve (12) successive equal monthly installments measured from June 13, 2005.
(5)	This option becomes exercisable as it vests in a series of thirty-six (36) equal monthly installments measured from December 14, 2003.
(6)	This option becomes exercisable as it vests in a series of sixty (60) successive equal monthly installments measured from March 16, 2001.
(7)	This option becomes exercisable as it vests in a series of sixty (60) successive equal monthly installments measured from July 18, 2001.

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