Digital Audio Processors and Drivers

ST’s digital audio processors/drivers offer digital audio processing and control for multichannel applications, providing versatile handling of a digital audio stream. Combined with a digital audio amplifier, they provide the output stage of a digital audio system.
Key features are:

  • From 2- to 8-channel, 24-bit processing
  • FFX capabilities allow one to drive ST digital amplifiers with high efficiency
  • Automodes and dynamic range compression features

STA309A multi-channel digital audio processor

The STA309A is a single chip solution for digital audio processing and control in multi-channel applications. In conjunction with a DDX® power device, the STA309A provides high-quality, high-efficiency, all digital amplification. The device is extremely versatile, allowing inputs of most digital formats including 6.1/7.1-channel and 192 kHz, 24-bit DVD-audio, DSD/SACD. In 5.1 applications the additional 2 channels can be used for audio line-out or headphone drive. In speaker mode, with 8 channel outputs in parallel, the STA309A can deliver more than 1 W.