AD242X series Automotive Audio Bus transceivers. Source: Analog Devices. Analog Devices, Inc., has introduced three enhanced Automotive Audio Bus (A2B®) transceivers for distributing audio and control data plus clock and power over a single, unshielded twisted-pair (UTP) cable. The AD242x series of A2B® transceivers offers a flexible slave-to-slave communication capability, as well as support for reduced data-sampling rates. Both of these features significantly improve overall bus-bandwidth utilization and are key differentiators for emerging applications such as in-car communications and active noise cancellation. These devices are fully pin-compatible with existing series members, simplifying upgrade and speeding time to market.
The AD242x devices 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 general-purpose input/output (GPIO), inter-integrated circuits (I2C) and clocking capability to further increase system level flexibility. Further extending the A2B® technology’s reach to super-premium systems, AD242x devices can now support daisy-chain configurations up to 11 total nodes, while increasing the maximum internode distance to 15 meters.
The AD2425, AD2422 and AD2421 fully comply with all relevant automotive EMC, EMI, and ESD requirements, are fully AEC-Q100 qualified, and operate over the extended automotive temperature range of negative 40 degrees Celsius to 105 degrees Celsius.
