ADI rolls new generation of Audio Bus transceivers

January 23, 2017 // By Christoph Hammerschmidt
Analog Devices (ADI) has introduced three transceivers supporting the company’s Audio Bus (A2B) technology for distributing audio and control data plus clock and power over a single, unshielded twisted-pair (UTP) cable.

The AD242x series of A 2B transceivers offers a flexible slave-to-slave communication capability as well as support for reduced data-sampling rates. Both features are said to significantly improve overall bus-bandwidth utilization and are key differentiators for emerging applications such as in-car communications and active noise cancellation. The new devices are pin-compatible with existing series members.

The transceivers include new features designed to increase system-level performance and ease of use. All new AD242x devices include an improved pulse density modulation (PDM) block that is critical for next-generation microphone connectivity applications. The AD242x devices also incorporate enhanced GPIO, I 2C, and clocking capability to further increase system-level flexibility. Further extending the A 2B technology’s reach to super-premium systems, AD242x devices can now support daisy-chain configurations for up to 11 total nodes, while increasing the maximum internode distance to 15m.

Available in 32-lead LFCSP packages, the AD2421, AD2422, and AD2425 transceivers are compliant with all relevant automotive EMC, EMI, and ESD requirements, are fully AEC-Q100 qualified, and operate over the extended automotive temperature range (-40⁰C to +105⁰C). Master and slave evaluation boards, as well as local- and phantom-powered evaluation boards are currently available. 

Product pages and data sheets: http://www.analog.com/AD2425W

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