STA308A

Audio Special Purpose Overview

The STA308A is a multichannel digital audio processor featuring eight DDX™ channels with 24-bit resolution. It supports input sample rates from 32 kHz to 192 kHz and provides volume control ranging from 0 to -127 dB in 0.5 dB steps. The device includes variable digital gain from 0 to 24 dB with limiter functionality, I²S inputs/outputs, and individual channel mute capabilities. It offers selectable serial audio interfaces, bass/treble controls, active crossover, DC blocking filters, and DDX™ ternary or binary PWM outputs for direct digital amplification applications.

Audio Special Purpose Feature Summary

• Eight DDX™ channels with 24-bit processing capability
• Supports input sample rates from 32 kHz to 192 kHz
• Volume control from 0 to -127 dB (0.5 dB steps)
• Variable digital gain from 0 to 24 dB with digital limiter

Audio Special Purpose Applications

• Multi-channel digital audio processing systems
• Direct Digital Amplification (DDX™) solutions
• High-efficiency all-digital amplification designs

Audio Special Purpose Part Context

The STA308A belongs to STMicroelectronics' digital audio processor family, designed for high-resolution audio processing. It integrates a 24-bit DSP capable of handling standard input sample frequencies. The component serves as a single-chip solution for controlling multi-channel audio applications, particularly those requiring DDX™ output compatibility with power devices for efficient amplification.

Audio Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify pinout and functional compatibility before considering alternative components.