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Digital audio receiver IC integrates sample-rate converter

Austin, Tex.—Cirrus Logic Inc. has introduced the CS8422, a 24-bit, 192 kHz digital audio receiver with a low-jitter PLL and integrated asynchronous sample rate converter.

The digital audio receiver utilizes a high performance PLL, which does not require any external loop filter components, for ultra-low jitter clock recovery and high jitter rejection from incoming audio streams. The CS8422 integrates an input multiplexer that supports up to four S/PDIF or two differential AES3 audio inputs, receiver to transmitter pass-through and TDM mode for automotive applications.

The CS8422 is offered in a 32-lead QFN package and operates from a single, 3.3V supply with on-chip level shifters to support a direct interface to logic levels from 1.8V to 5V. Audio data is input through the digital interface receiver or a three-wire serial audio input port, with audio output through one of two three-wire serial output ports. Its phase-lock loop core provides high tolerance to input jitter, and can output 192Fs, 384Fs, 512Fs, 768Fs, or 1024Fs recovered output clock rates.

Pricing: $3.84 in quantities of 10,000.
Availability: Volume production.
Datasheet: Click here.

Cirrus Logic Inc., www.cirrus.com

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