Silicon Laboratories Inc. (Nasdaq: SLAB), a leader in high-performance, analog-intensive, mixed-signal integrated circuits (ICs), today reported fourth quarter revenue of $126.7 million, a 13 percent increase compared to the same period last year. GAAP and non-GAAP earnings per share of $0.29 and $0.49, respectively, exceeded expectations and represented solid double-digit sequential growth. Financial Highlights Business trends were robust throughout the quarter, with new product cycles driving revenue upside. Solid operating performance also translated to better than anticipated profitability. Fourth quarter revenue increased more than 6 percent sequentially to $126.7 million. GAAP gross margin was 60.9 percent. R&D investment increased to $34.7 million, and SG&A was flat at $27.3 million. Operating income improved meaningfully from the same period last year to 12 percent. GAAP net income was 10 percent of revenue for the quarter. Diluted GAAP earnings of 29 cents represented a 12 percent increase compared to the third quarter. The following non-GAAP results exclude the impact of stock compensation expense and certain other one-time items. Gross margin remained stable at 61.2 percent. R&D investment increased to $29.6 million due primarily to increased tape out activity, and as planned, SG&A remained flat at $22.5 million. Operating income improved to 20 percent of revenue, and net income improved to 17 percent of revenue. The solid operational performance resulted in diluted earnings per share of 49 cents, an 11 percent sequential increase, and well above guidance. The company ended the quarter with $325 million in cash, cash equivalents and investments due to continued healthy cash flow from operations. Reconciling charges are set forth in the financial measures table included below. Business Highlights Fourth quarter revenue upside was driven by new product cycles in video and touch controllers, as well as better than anticipated demand for SLIC devices and many of the company’s Broad-based products.