BYD Selects Analog Devices’ A2B to realise energy efficient vehicles with immersive entertainment

04-03-2019 |   |  By Rob Coppinger

Chinese automotive manufacturer BYD Co. Ltd has selected Analog Devices Inc (ADI)’s Automotive Audio Bus (A2B) and SHARC digital signal processor (DSP) to help realise more energy efficient vehicles with more immersive entertainment.

The A2B solution makes a vehicle more energy efficient because it reduces the amount of wiring needed by up to 75%. A single unshielded twisted-pair wire, the A2B technology has the ability to distribute audio and control data. The A2B solution can substantially reduce the amount of cabling runs because it connects in a daisy chain sequence, multiple remote sensors for the various applications in the vehicle. Historically, installations for high fidelity audio in cars needed a lot of heavy and expensive cabling.

“BYD is a highly respected and innovative automotive manufacturer,” said Mark Gill, vice president of automotive at ADI. “BYD’s use of ADI’s A2B and SHARC processor technologies will enable this automotive leader to offer greater energy efficiency and superior audio sound quality to its customers.”


BYD has a range of hybrid electric and fully electric vehicles on offer from single and double decker buses to passenger cars. ADI’s SHARC processor family uses floating-point processing and ADI says it has exceptional core and memory performance and outstanding input, output throughput. The processor has an ARM microchip design core. ADI sells a range of SHARC processors at various prices to serve a wide range of applications, in particular where a dynamic range is key, not just vehicle audio entertainment.

As part of its A2B solution, ADI has enhanced its transceivers with the AD2410 product and most recently with the AD242x family. All A2B transceivers are capable of distributing audio and control data together with clock and power over a single, unshielded, low cost twisted-pair wire. This is a major factor behind the dramatic reduction in weight that is possible with the cable harness. Another factor that drives this weight reduction is the simpler design with the daisy chain sequence that reduces complexity. The A2B technology can also supply power to other devices in the daisy chain, eliminating the need for local power supplies and further reducing total system cost.

By Rob Coppinger

Rob Coppinger is a freelance science and engineering journalist. Originally a car industry production engineer, he jumped into journalism and has written about all sorts of technologies from fusion power to quantum computing and military drones. He lives in France.

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