STA350BTR

Audio Special Purpose Overview

The STA350BTR is a 2.1-channel high-efficiency digital audio system from STMicroelectronics, part of the Sound Terminal series. It integrates digital audio processing, amplifier control, and an FFX power output stage into a single chip. The device supports a supply voltage range of 5 V to 26 V and operates within temperatures of -20°C to 85°C. It features selectable input sample rates from 32 kHz to 192 kHz and provides up to 100 dB SNR. The component utilizes I2C for control and I2S for serial audio data interfaces.

Audio Special Purpose Feature Summary

• FFX technology delivering 100 dB SNR and dynamic range
• Four configurable power output modes including stereo, 2.1, and mono-BTL
• I2C control with selectable address and I2S serial audio interface
• Dedicated LFE processing and two independent DRCs for anti-clipping

Audio Special Purpose Applications

• Pre-amplifier systems
• Digital audio power amplification
• High-efficiency sound terminal designs

Audio Special Purpose Procurement Notes

Verify the package variant upon ordering. The datasheet distinguishes between the STA350BW (exposed pad down) and STA350B (slug up). Confirm that the specific suffix matches the required thermal configuration and pinout for the target PCB layout.

Audio Special Purpose Selection Notes

Select this component for applications requiring integrated DSP and power amplification in a compact form factor. Ensure the design accommodates the PowerSSO-36 package dimensions and provides adequate thermal management for the chosen output power configuration.

Audio Special Purpose Part Context

This component belongs to the STA350 family, which includes variants like the STA350BW. It is designed as a fully integrated processor solution for digital audio, combining signal processing and power stages to simplify system architecture compared to discrete solutions.

Audio Special Purpose Replacement Considerations

The datasheet notes full compatibility with the STA339BW and STA339BWS. Verify pin-to-pin and register-level compatibility before substituting these models in existing designs.