Simplifies Product Designs and Helps Reduce Form Factors

AUSTIN, Texas – Feb. 13, 2006 – Extending its expansive portfolio of analog and mixed-signal audio converter integrated circuit products, Cirrus Logic Inc. (Nasdaq: CRUS) has introduced two new stereo analog-to-digital converters (ADCs) targeted for a variety of consumer and automotive audio applications such as set-top boxes, digital televisions, DVD recorders, audio/video receivers, in-car entertainment and concierge systems and musical instruments.

The new 10-pin ADCs, the CS5343 and CS5344, give OEMs the industry’s smallest (less than 15 square millimeters), stereo audio ADCs, while still delivering superior sound quality.

“These new ADCs provide manufacturers a new level of simplicity when designing analog to digital audio conversion blocks in their products,” said Jason Rhode, vice president and general manager of Mixed-Signal Audio Division, Cirrus Logic. “This solution delivers premium audio performance in the industry’s smallest form factor without the need for configuration or expensive support circuitry. Cirrus Logic has now introduced 12 high-performance audio A/D converters in the past three years, which gives our diverse customer base one of the most comprehensive product portfolios in the industry.”

Based on an advanced multibit Delta-Sigma architecture, the CS5343 and CS5344 operate from a single 3.3V or 5V power supply and utilize a proprietary automatic mode selection to eliminate external configuration. These parts also incorporate a unique input architecture which provides a very high input impedance of 7.5 MOhms, giving designers improved flexibility to use simple passive input circuits for the stereo line-level inputs, thus reducing design time, board space and cost. The CS5343 and CS5344 support audio sample rates up to 108 kHz and deliver 98 dB of dynamic range and -90 dB of THD+N. Consuming only 50 mW of power, the CS5343 and CS5344 differ only in the serial audio interface format they support, with the CS5343 supporting the I²S format and the CS5344 supporting left-justified serial data format.

Pricing and Availability

The CS5343 and CS5344 are available in a 10-pin, lead-free TSSOP package and are each priced at $1.35 in quantities of 10,000.

Cirrus Logic Inc.

Cirrus Logic develops high-precision, analog and mixed-signal integrated circuits for a broad range of consumer and industrial markets. Building on its diverse analog mixed-signal patent portfolio, Cirrus Logic delivers highly optimized products for consumer and commercial audio, automotive entertainment and industrial applications. The company operates from headquarters in Austin, Texas, with offices in Colorado, Europe, Japan and Asia.

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Cirrus Logic and Cirrus are trademarks of Cirrus Logic Inc. All other product names noted herein may be trademarks of their respective holders.

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