STA308

Audio Special Purpose Overview

The STA308 is a single-chip multichannel digital audio processor featuring eight DDX™ channels with 24-bit resolution. It supports input sample rates from 32 kHz to 192 kHz and operates within a TQFP64 package. The device provides volume control ranging from 0 to -127 dB in 0.5 dB steps and variable digital gain from 0 to 24 dB, also in 0.5 dB increments. Key electrical capabilities include individual channel mute, zero input detect, and selectable serial audio data interfaces. It integrates I2S inputs and outputs for direct connection to digital amplifiers.

Audio Special Purpose Feature Summary

• Eight-channel DDX™ capability with 24-bit processing resolution
• Supports input sample rates from 32 kHz to 192 kHz
• Volume control from 0 to -127 dB with 0.5 dB step resolution
• Variable digital gain from 0 to 24 dB with digital limiter functionality

Audio Special Purpose Applications

• Multi-channel digital audio systems requiring high-efficiency all-digital amplification
• Applications supporting 6.1 channel and 192 kHz, 24-bit DVD-Audio formats
• Systems utilizing DDX™ power devices for direct digital amplification output

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix against official STMicroelectronics documentation to confirm package type and temperature range. Ensure compatibility with required I2S interface standards and clock input ratios before procurement. Cross-reference the part number with current product status to confirm availability and obsolescence status.

Audio Special Purpose Selection Notes

Select the STA308 when designing multi-channel audio processors requiring integrated DSP functions such as crossover, bass management, and EQ. Verify that the system requires DDX™ output compatibility and supports the necessary I2S input/output configurations. Confirm that the application benefits from the internal 24-bit DSP processing at standard input sample frequencies up to 192 kHz.

Audio Special Purpose Part Context

The STA308 belongs to the family of multichannel digital audio processors designed for integration with DDX™ power devices. It serves as a central processing unit for digital audio signals, handling filtering, gain compression, and PCM/DDX™ output generation. The component enables high-quality, high-efficiency amplification by providing direct digital outputs to compatible power stages.

Audio Special Purpose Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Consult official STMicroelectronics resources for potential cross-references or next-generation replacements.