Date: 22/10/2008

Audio processors with flexible signal routing for automotive systems

Analog Devices, Inc. introduced the new ADAU144x SigmaDSP audio processor family, which incorporate a Flexible Audio Routing Matrix (FARM) for automotive head units and amplifiers that require signal routing and processing from multiple audio sources.

The new technology increases the processing speed and reduce the complexity of audio signal routing and clocking issues associated with CD changers, MP3 and DVD players, satellite radios, GPS navigation systems and other asynchronous audio sources associated with automotive audio sub-system.

Using the FARM solution, system designers can quickly compensate for the real world limitations of speakers, amplifiers and listening environments.

The new processors incorporate up to eight stereo asynchronous sample rate converters, an S/PDIF (Sony/Philips Digital Interface) transceiver and serial inputs/outputs that support I2S (inter-IC sound) and TDM (time-division multiplexed) formats.

The SigmaDSP core of the processor family features full 28-bit processing (56-bit in double precision mode) and synchronous parameter loading for ensuring filter stability.

Temperature Range: -40°C to +105°C

Availability: ADAU1442 & ADAU1445 will be available in December 2008
ADAU1446 will be available in November 2008
Packaging: 100-lead QFP

Pricing: $9.96 Per 1K quantities of ADAU1442
$9.31 Per 1K quantities of ADAU1445
$8.28 Per 1K quantities of ADAU1446

For more information on these devices visit: www.analog.com