STA311B

Audio Special Purpose Overview

The STA311B is a single-chip multichannel digital audio processor with FFX™ output capabilities. It supports 8 channels of 24-bit processing, delivering over 100 dB SNR and dynamic range. The device accepts selectable input sampling rates from 32 kHz to 192 kHz and handles 6 channels of DSD/SACD formats. Internal processing operates at 192 kHz with 24-bit to 36-bit precision. It features comprehensive digital gain/attenuation, up to 10 user-programmable biquads per channel, dual limiters/compressors, and AutoModes for bass management and downmixing. Packaged in VFQFPN-56.

Audio Special Purpose Feature Summary

• 8-channel 24-bit FFX™ processing with >100 dB SNR
• Supports 32 kHz–192 kHz inputs and 6-channel DSD/SACD
• Up to 10 independent 32-bit programmable biquads (EQ) per channel
• AutoModes including 5-band graphic EQ, 32 preset curves, and bass management

Audio Special Purpose Applications

• Multichannel home theater systems
• Digital audio processors for 5.1/7.1 configurations
• High-efficiency all-digital amplification systems

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix (e.g., TR for tape and reel) against the required packaging format. Confirm that the VFQFPN-56 package dimensions align with the target PCB layout. Ensure I²C interface compatibility for configuration registers.

Audio Special Purpose Selection Notes

Select this component for applications requiring high-channel-count digital audio processing with integrated DSP capabilities. Consider the 192 kHz internal processing rate for high-fidelity requirements. Verify power supply constraints match the 3.3-V VDD specification.

Audio Special Purpose Part Context

The STA311B is part of STMicroelectronics' portfolio of digital audio processors. It is designed to work in conjunction with FFX™ power devices to provide high-quality, high-efficiency, all-digital amplification solutions for complex audio environments.

Audio Special Purpose Replacement Considerations

Check for updated revisions or alternative packages within the same product family. No direct public substitute part numbers are listed in the provided documentation.