STMicroelectronics’ Integrated Automotive Audio Amplifier Combines High-Resolution Sound with Class-G Efficiency

STMicroelectronics announced its latest TDA7901 single-chip quad-bridge automotive amplifier using the company's advanced BCD (Bipolar-CMOS-DMOS) technology, integrates a buck controller for class-G power switching, and supports high-resolution audio. The TDA7901 features a full D/A converter, digital input for direct connection to I2S (or TDM) and powerful MOSFET output stages. A market-unique combination that STMicro says will be ideal for listening and high efficiency.

Asahi Kasei Microdevices (AKM) has resumed sample shipments of 13 Velvet Sound D/A converters (DAC) and A/D converters (ADC) products - all part of a new generation of improved devices. The samples start shipping in January 2022. Mass production is scheduled for the third quarter of 2022. The new range of devices include new 115dB and 768kHz 32-bit DACs in 2, 4, 6, and 8-channel models, plus nine new 32-bit ADCs in 2, 4, and 8 channel models including the AK5522 ADC, ideal for bus-powered USB audio interfaces.