Silicon Laboratories (SLAB)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

For the quarterly period ended April 2, 2011

or

For the transition period from                  to                 

Commission file number:  000-29823

(Exact name of registrant as specified in its charter)

(512) 416-8500

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Sections 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  x Yes  o No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  x Yes  o No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  o Yes x No

As of April 20, 2011, 44,524,674 shares of common stock of Silicon Laboratories Inc. were outstanding.

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Cautionary Statement

Except for the historical financial information contained herein, the matters discussed in this report on Form 10-Q (as well as documents incorporated herein by reference) may be considered “forward-looking” statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such forward-looking statements include declarations regarding the intent, belief or current expectations of Silicon Laboratories Inc. and its management and may be signified by the words “believe,” “estimate,” “expect,” “intend,” “anticipate,” “plan,” “project,” “will” or similar language. You are cautioned that any such forward-looking statements are not guarantees of future performance and involve a number of risks and uncertainties. Actual results could differ materially from those indicated by such forward-looking statements. Factors that could cause or contribute to such differences include those discussed under “Risk Factors” and elsewhere in this report. Silicon Laboratories disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

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Part I.  Financial Information

Item 1.  Financial Statements

Silicon Laboratories Inc.

Condensed Consolidated Balance Sheets

(Unaudited)

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Silicon Laboratories Inc.

Condensed Consolidated Statements of Operations

(Unaudited)

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Silicon Laboratories Inc.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

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Silicon Laboratories Inc.

Notes to Condensed Consolidated Financial Statements

(Unaudited)

The Condensed Consolidated Financial Statements included herein are unaudited; however, they contain all normal recurring accruals and adjustments which, in the opinion of management, are necessary to present fairly the condensed consolidated financial position of Silicon Laboratories Inc. and its subsidiaries (collectively, the “Company”) at April 2, 2011 and January 1, 2011, the condensed consolidated results of its operations for the three months ended April 2, 2011 and April 3, 2010, and the Condensed Consolidated Statements of Cash Flows for the three months ended April 2, 2011 and April 3, 2010.  All intercompany balances and transactions have been eliminated in consolidation.  The condensed consolidated results of operations for the three months ended April 2, 2011 are not necessarily indicative of the results to be expected for the full year.

The accompanying unaudited Condensed Consolidated Financial Statements do not include certain footnotes and financial presentations normally required under U.S. generally accepted accounting principles. Therefore, these Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and notes thereto for the year ended January 1, 2011, included in the Company’s Form 10-K filed with the Securities and Exchange Commission (SEC) on February 10, 2011.

The Company prepares financial statements on a 52-53 week year that ends on the Saturday closest to December 31.  Fiscal 2011 will have 52 weeks and fiscal 2010 had 52 weeks.  In a 52-week year, each fiscal quarter consists of 13 weeks.

Revenues are generated almost exclusively by sales of the Company’s integrated circuits (ICs). The Company recognizes revenue when all of the following criteria are met: 1) there is persuasive evidence that an arrangement exists, 2) delivery of goods has occurred, 3) the sales price is fixed or determinable, and 4) collectibility is reasonably assured. Generally, revenue from product sales to direct customers and contract manufacturers is recognized upon shipment.

A portion of the Company’s sales are made to distributors under agreements allowing certain rights of return and price protection related to the final selling price to the end customers. Accordingly, the Company defers revenue and cost of revenue on such sales until the distributors sell the product to the end customers. The net balance of deferred revenue less deferred cost of revenue associated with inventory shipped to a distributor but not yet sold to an end customer is recorded in the “deferred income on shipments to distributors” liability on the Consolidated Balance Sheet. Such net deferred income balance reflects the Company’s estimate of the impact of rights of return and price protection.

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Silicon Laboratories Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

2. Earnings (Loss) Per Share

The following table sets forth the computation of basic and diluted earnings (loss) per share (in thousands, except per share data):

Approximately 0.3 million and 0.6 million weighted-average dilutive potential shares of common stock have been excluded from the earnings per share calculation for the three months ended April 2, 2011 and April 3, 2010, respectively, as they were anti-dilutive. Further, diluted shares used in calculating net loss per share for the three months ended April 2, 2011 exclude 1.8 million shares due to the Company’s net loss for the period.

3. Cash, Cash Equivalents and Investments

The Company’s cash equivalents and short-term investments as of April 2, 2011 consisted primarily of corporate bonds, money market funds, municipal bonds, variable-rate demand notes, U.S. Treasury bills, U.S. government agency bonds and discount notes, international government bonds, certificates of deposit and commercial paper. The Company’s long-term investments consist of auction-rate securities. Early in fiscal 2008, auctions for many of the Company’s auction-rate securities failed because sell orders exceeded buy orders. As of April 2, 2011, the Company held $19.6 million par value auction-rate securities, all of which have experienced failed auctions. The underlying assets of the securities consisted of student loans and municipal bonds, of which $17.6 million were guaranteed by the U.S. government and the remaining $2.0 million were privately insured. As of April 2, 2011, $17.6 million of the auction-rate securities had credit ratings of AAA and $2.0 million had a credit rating of A. These securities have contractual maturity dates ranging from 2029 to 2046 and with current yields of 0.46% to 3.53% per year at April 2, 2011. The Company is receiving the underlying cash flows on all of its auction-rate securities. The principal amounts associated with failed auctions are not expected to be accessible until a successful auction occurs, the issuer redeems the securities, a buyer is found outside of the auction process or the underlying securities mature. The Company is unable to predict if these funds will become available before their maturity dates.

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Silicon Laboratories Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

The Company does not expect to need access to the capital represented by any of its auction-rate securities prior to their maturities. The Company does not intend to sell, and believes it is not more likely than not that it will be required to sell, its auction-rate securities before their anticipated recovery in market value or final settlement at the underlying par value. The Company believes that the credit ratings and credit support of the security issuers indicate that they have the ability to settle the securities at par value. As such, the Company has determined that no other-than-temporary impairment losses existed as of April 2, 2011.

The Company’s cash, cash equivalents and investments consist of the following (in thousands):

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Silicon Laboratories Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

The available-for-sale investments that were in a continuous unrealized loss position, aggregated by length of time that individual securities have been in a continuous loss position, were as follows (in thousands):

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Silicon Laboratories Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

The gross unrealized losses as of April 2, 2011 and January 1, 2011 were due primarily to the illiquidity of the Company’s auction-rate securities and, to a lesser extent, to changes in market interest rates.

The following summarizes the contractual underlying maturities of the Company’s available-for-sale investments at April 2, 2011 (in thousands):

The Company is exposed to interest rate fluctuations in the normal course of its business, including through its corporate headquarters leases. The base rents for these leases are calculated using a variable interest rate based on the three-month LIBOR. The Company has entered into interest rate swap agreements with notional values of $44.3 million and $50.1 million and, effectively, fixed the rent payment amounts on these leases through March 2011 and March 2013, respectively. The Company’s swap agreement with a notional value of $44.3 million matured in March 2011 and was not renewed. The Company’s objective in entering into such swap agreements was to offset increases and decreases in expenses resulting from changes in interest rates with losses and gains on the derivative contracts, thereby reducing volatility of earnings. The Company does not use derivative contracts for speculative purposes.

The interest rate swap agreements are designated and qualify as cash flow hedges. The effective portion of the gain or loss on interest rate swaps is recorded in accumulated other comprehensive loss as a separate component of stockholders’ equity and is subsequently recognized in earnings when the hedged exposure affects earnings. Cash flows from derivatives are classified as cash flows from operating activities in the Consolidated Statement of Cash Flows.

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Silicon Laboratories Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

The Company estimates the fair values of derivatives based on quoted prices and market observable data of similar instruments. If the lease agreements or the interest rate swap agreements are terminated prior to maturity, the fair value of the interest rate swaps recorded in accumulated other comprehensive loss may be recognized in the Consolidated Statement of Operations based on an assessment of the agreements at the time of termination. The Company did not discontinue any cash flow hedges in any of the periods presented.

The Company measures the effectiveness of its cash flow hedges by comparing the change in fair value of the hedged item with the change in fair value of the interest rate swap. The Company recognizes ineffective portions of the hedge, as well as amounts not included in the assessment of effectiveness, in the Consolidated Statement of Operations. As of April 2, 2011, no portion of the gains or losses from the Company’s hedging instrument was excluded from the assessment of effectiveness. There was no hedge ineffectiveness for any of the periods presented.

The Company’s derivative financial instrument consisted of the following (in thousands):

The before-tax effect of derivative instruments in cash flow hedging relationships was as follows (in thousands):

The Company expects to reclassify $1.8 million of its interest rate swap losses included in accumulated other comprehensive loss as of April 2, 2011 into earnings in the next 12 months, which is offset by lower rent payments.

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Silicon Laboratories Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

The Company’s interest rate swap agreement contains provisions that require it to maintain unencumbered cash and highly-rated short-term investments of at least $150 million. If the Company’s unencumbered cash and highly-rated short-term investments are less than $150 million, it would be required to post collateral with the counterparty in the amount of the fair value of the interest rate swap agreements in net liability positions. The Company’s interest rate swap was in a net liability position at April 2, 2011. No collateral has been posted with the counterparty as of April 2, 2011.

The fair values of the Company’s financial instruments are recorded using a hierarchal disclosure framework based upon the level of subjectivity of the inputs used in measuring assets and liabilities. The three levels are described below:

Level 1 - Inputs are unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date.

Level 2 - Inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly.

Level 3 - Inputs are unobservable for the asset or liability and are developed based on the best information available in the circumstances, which might include the Company’s own data.

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Silicon Laboratories Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

The following summarizes the valuation of the Company’s financial instruments (in thousands). The tables do not include either cash on hand or assets and liabilities that are measured at historical cost or any basis other than fair value.