Enhanced Automotive Audio Bus(AB) Transceiver supporting Slave operation

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 AD2422W is an enhanced A2B transceiver offering an expanded feature set while retaining complete compatibility with existing AD240x devices. The AD2422W is a feature and cost reduced member (supporting slave operation only) of the A2B family specifically targeting connectivity to PDM-output microphones and sensors.

The AD2422W 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