ADI rolls new generation of Audio Bus transceivers

January 23, 2017 //By Christoph Hammerschmidt
ADI rolls new generation of Audio Bus transceivers
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:

Related articles:

Intelligent car audio distribution

In-car audio development platform applies ADI’s A2B technology



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