STA311BTR

Audio Special Purpose Overview

The STA311BTR is a fully integrated digital audio processor from STMicroelectronics, designed for multichannel applications. It supports eight channels of 24-bit Full Flexible Amplification (FFX) with a signal-to-noise ratio exceeding 100 dB. The device accepts input sampling rates from 32 kHz to 192 kHz and operates on a supply voltage between 3 V and 3.6 V. It features I2C and I2S interfaces and is housed in a 56-VFQFN exposed pad package. The component functions as a pre-amplifier within the Audio Special Purpose category.

Audio Special Purpose Feature Summary

• 8 channels of 24-bit FFX with >100 dB SNR
• Selectable input sampling rates: 32 kHz to 192 kHz
• I2C and I2S interface support
• Operating temperature range: -40°C to 125°C (TJ)

Audio Special Purpose Applications

• Pre-Amplifier systems
• Multichannel digital audio processing
• High-efficiency all-digital amplification setups

Audio Special Purpose Procurement Notes

Verify the 56-VFQFPN package designation against the official datasheet, which typically specifies VFQFN-56. Confirm that the stated operating temperature upper limit of 125°C aligns with the manufacturer's thermal specifications for this specific part number before finalizing procurement.

Audio Special Purpose Selection Notes

Select this component for designs requiring high-channel-count digital audio processing with low noise performance. Ensure the system power supply remains within the 3 V to 3.6 V range. Verify compatibility with the required I2S or I2C bus protocols and confirm that the 56-VFQFN footprint fits the PCB layout constraints.

Audio Special Purpose Part Context

The STA311BTR belongs to the STA311 series of digital audio processors. It serves as a single-chip solution for controlling multichannel audio systems, providing output capabilities for FFX power devices. This integration allows for high-quality, efficient digital amplification in complex audio environments.

Audio Special Purpose Replacement Considerations

Check for other variants within the STA311 family, such as the STA311B, to ensure pinout and feature compatibility. Verify that any substitute maintains the same 56-pin VFQFN package and electrical specifications.