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Power-efficient stereo audio codec for mobile Internet devices launched

Posted: 20 Oct 2010 ?? ?Print Version ?Bookmark and Share

Keywords:audio codec? coder decoder? stereo?

A new power-efficient stereo audio codec for consumer electronics products, such as mobile Internet devices, smartbooks, and Web tablets, is now available from Conexant Systems Inc.

Conexant said the CX20745 codec, which is now available for sampling in a complete evaluation kit, is the first in a family of high-performance audio solutions for compact mobile devices.

The CX20745's improved performance is credited to a power-efficient Stereo Class-D amplifier capable of driving up to 2mW per channel. The codec supports Open Mobile Terminal Platform headset input/output with command-sensing functionality, as well as digital and analog microphone inputs.

Other key features include a CPU resource-friendly hardware equalizer that boosts application performance, dynamic range and microphone automatic gain control, a high-performance multi-bit digital/analog and analog/digital converter, and support for differential internal signaling to enhance audio fidelity. The solution also uses direct current cancellation to eliminate the popping sound during power-state transitions. A temperature range of -40 to 85Centigrade is prescribed for the CX20745.

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