A²B transceivers meet emerging multi-mic applications

The A²B transceivers have been delivering high-fidelity digital audio to advanced, feature-rich automotive infotainment systems, while reducing the weight of cable harnesses by up to 75 percent, for over three product generations.

A²B is a high-bandwidth digital bus that can transport I²S audio and I²C digital control data together with clock and power over significant distances, requiring only a single unshielded twisted pair cable.

These A²B transceivers enable expanded use cases for microphone connectivity, including voice recognition, personal audio zones, and active noise cancellation in the automotive and transportation, building technology, and consumer application spaces.

Developers can now tailor system-level performance to the most demanding electromagnetic compatibility (EMC) requirements, including to specific requirements of individual OEMs.

The transceivers can connect directly to general-purpose digital signal processors (DSPs), field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), microphones, analogue-to-digital converters (ADCs), digital-to-analogue converters (DACs), and codecs through a multichannel I²S/TDM interface (on the AD2428 and AD2429 variants).

The AD242x A²B transceivers are available in a compact, 32-lead 5mm × 5mm package and are fully pin compatible, reducing time to market and simplifying the upgrade process. Overall system costs are lowered by the transceivers, making them an ideal choice for applications such as autonomous transportation, hands-free/speech recognition, Advanced Driver-Assistance Systems (ADAS), conference rooms, small stage audio, and premium home theatre and automotive audio.