-- IoT Grows to More Than 50 Percent of Total Revenue --

AUSTIN, Texas, July 26, 2017 — (PRNewswire) —   Silicon Labs (NASDAQ: SLAB), a leading provider of silicon, software and solutions for a smarter, more connected world, today reported financial results for its second quarter ended July 1, 2017. Revenue in the second quarter exceeded the high end of guidance at $190 million, up from $179 million in the first quarter. Second quarter GAAP and non-GAAP earnings per share (EPS) were $0.38 and $0.79, respectively.

"Our second quarter 2017 financial results reflect outstanding year-on-year progress, with 12 percent growth in product revenue," said Tyson Tuttle, CEO of Silicon Labs. "Five years ago, we accelerated our focus on the Internet of Things through a combination of organic investment and strategic acquisitions. This quarter, IoT surpassed 50 percent of total revenue, driving target model performance in year-on-year product revenue growth, gross margin and operating income. Our strategy is coming together as we focus on core strategic growth drivers and capture share in target markets."

Second Quarter Financial Highlights

• IoT revenue established a new record, increasing to $98 million, up 11% sequentially and 27% year-on-year.
• Infrastructure revenue increased to $38 million, up 6% sequentially and up 7% year-on-year, exclusive of $5 million of patent sale revenue in the second quarter of 2016.
• Broadcast revenue declined to $37 million, down 2% sequentially and 4% year-on-year.
• Access revenue declined to $17 million, down 2% sequentially and 10% year-on-year.

On a GAAP basis:

• GAAP gross margin was 59.5%.
• GAAP R&D expenses were $52 million.
• GAAP SG&A expenses were $40 million.
• GAAP operating income as a percentage of revenue was 11.0%.
• GAAP diluted earnings per share were $0.38.

On a non-GAAP basis, excluding the impact of stock compensation, amortization of acquired intangible assets, non-cash interest expense on convertible notes, and certain other items as set forth in the reconciliation tables below:

• Non-GAAP gross margin was 59.7%.
• Non-GAAP R&D expenses were $42 million.
• Non-GAAP SG&A expenses were $33 million.
• Non-GAAP operating income as a percentage of revenue was 20.5%.
• Non-GAAP diluted earnings per share were $0.79.

Product Highlights

• Launched the new EFM32GG11 Giant Gecko microcontroller, offering the most advanced capabilities and largest memory footprint in the low-power MCU market.
• Introduced a comprehensive suite of software and hardware that supports the new Bluetooth® mesh specification, addressing smart home, lighting, beacons and asset tracking applications.
• Launched the CP2615 USB-to-I2S bridge chip, providing a simple, turnkey solution for transferring digital audio data.
• Introduced the Si54x Ultra Series™ family of high-performance crystal oscillators, offering the industry's lowest jitter frequency-flexible solution and shortest lead times for a wide range of networking and communications applications.

Business Highlights

• Delivered the keynote at the Design Automation Conference in Austin, Texas, on the topic of "Accelerating the IoT."
• Won Somfy's Supplier Innovation Award for providing groundbreaking Wireless Gecko silicon and software, enabling flexible control and integration of Somfy's motorized window coverings into connected living and building experiences.

Business Outlook

The company expects revenue in the third quarter to be in the range of $193 million to $199 million, and also estimates the following:

On a GAAP basis:

• GAAP gross margin at approximately 58.5%.
• GAAP operating expenses between $92.5 and $93 million.
• GAAP effective tax rate at 11.0%.
• GAAP diluted earnings per share between $0.35 and $0.41.

On a non-GAAP basis, and excluding the impact of stock compensation, amortization of acquired intangible assets, non-cash interest expense on convertible notes, and certain other items as set forth in the reconciliation tables below:

• Non-GAAP gross margin at 58.5%.
• Non-GAAP operating expenses between $74.5 and $75.0 million.
• Non-GAAP effective tax rate at 11.0%.
• Non-GAAP diluted earnings per share between $0.78 and $0.84.

Webcast and Conference Call        

A conference call discussing the quarterly results will follow this press release at 7:30 a.m. Central time. An audio webcast will be available on Silicon Labs' website ( www.silabs.com) under Investor Relations. A replay will be available after the call at the same website listed above or by calling 1 (855) 859-2056 or (404) 537-3406 (international) and entering conference ID 8461186. The replay will be available through August 26, 2017.

About Silicon Labs

Silicon Labs (NASDAQ: SLAB) is a leading provider of silicon, software and solutions for a smarter, more connected world. Our award-winning technologies are shaping the future of the Internet of Things, Internet infrastructure, industrial automation, consumer and automotive markets. Our world-class engineering team creates products focused on performance, energy savings, connectivity and simplicity. www.silabs.com

Forward-Looking Statements

This press release contains forward-looking statements based on Silicon Labs' current expectations. The words "believe," "estimate," "expect," "intend," "anticipate," "plan," "project," "will" and similar phrases as they relate to Silicon Labs are intended to identify such forward-looking statements. These forward-looking statements reflect the current views and assumptions of Silicon Labs and are subject to various risks and uncertainties that could cause actual results to differ materially from expectations. Among the factors that could cause actual results to differ materially from those in the forward-looking statements are the following: risks that Silicon Labs may not be able to maintain its historical growth; quarterly fluctuations in revenues and operating results; difficulties developing new products that achieve market acceptance; dependence on a limited number of products and customers; intellectual property litigation risks; risks associated with acquisitions and divestitures; product liability risks; difficulties managing our distributors, manufacturers and subcontractors; inventory-related risks; difficulties managing international activities; risks that Silicon Labs may not be able to manage strains associated with its growth; credit risks associated with our accounts receivable; dependence on key personnel; stock price volatility; geographic concentration of manufacturers, assemblers, test service providers and customers in Asia that subjects Silicon Labs' business and results of operations to risks of natural disasters, epidemics, war and political unrest; debt-related risks; capital-raising risks; the competitive and cyclical nature of the semiconductor industry; average selling prices of products may decrease significantly and rapidly; information technology risks; cyber-attacks against our products and our networks; conflict mineral risks and other factors that are detailed in the SEC filings of Silicon Laboratories Inc. Silicon Labs disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. References in this press release to Silicon Labs shall mean Silicon Laboratories Inc.