Enhanced Automotive Audio Bus (AB) Transceiver supporting Slave operation as an end point

The Automotive Audio Bus® (A2B®) is an innovative technology that reduces system cost, weight, and design complexity by distributing audio and control data, together with clock and power over a single, low-cost, unshielded twisted pair cable. The AD2421W is an enhanced A2B transceiver offering an expanded feature set while retaining complete compatibility with existing AD240x devices. The AD2421W is the lowest cost A2B transceiver supporting slave operation as an end-point only.

The AD2421W is targeted for use in microphone connectivity applications such as Beam Forming Arrays, Active Noise Cancellation, and In-Car Communications.

Applications

* Automotive audio communication link

* Active noise cancellation

* Microphone arrays for hands free and in car communication

* High bandwidth (50Mbps) digital bus support for up to 32 upstream and downstream audio channels

* Data, control, plus power on a single wire pair provides system cost reduction using low-cost unshielded, twisted pair cable

* Single-master, multiple-slave, line topology supports daisy chaining with zero processor intervention

* Phantom power capability eliminates the need for local power supplies

* Embedded diagnostics provide easy system level fault detection & correction

* Fully configurable via SigmaStudio™ graphical design environment promotes Fast time to market