STA350BWTR

Audio Special Purpose Overview

The STA350BWTR is a 2.1-channel high-efficiency digital audio system from the Sound Terminal series, manufactured by STMicroelectronics. It integrates digital audio processing and FFX power output stages in a PowerSSO-36 EPD package. The device supports a supply voltage range of 5 V to 26 V with an absolute maximum rating of 30 V. Key electrical specifications include a THD+N of 0.09% and an operating temperature range of -20°C to +85°C. It features I2S input interfaces and I2C control for configuration.

Audio Special Purpose Feature Summary

• Four configurable power output modes: stereo (2x50W into 6Ω), 2.1 channel (2x18W+40W), stereo with lineout, or mono-BTL (1x90W into 3Ω).
• FFX technology providing 100 dB SNR and dynamic range with selectable input sample rates from 32 kHz to 192 kHz.
• Integrated DSP capabilities including up to 8 user-programmable biquads per channel, dual-band DRC, and 15 preset crossover filters.
• Comprehensive protection features including thermal overload, short-circuit, zero-detect mute, and invalid input-detect mute.

Audio Special Purpose Applications

• Digital audio power amplifiers
• Pre-amplifier systems
• Video applications supporting 576 x Fs input mode

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package orientation and tape/reel specifications. Ensure compatibility with I2S audio sources and I2C control lines during design integration. Confirm moisture sensitivity handling requirements for the PowerSSO-36 EPD package prior to assembly.

Audio Special Purpose Selection Notes

Select this component for designs requiring flexible multi-channel audio output configurations within a single IC. Consider the 5V to 26V supply range when designing power delivery circuits. Evaluate the need for integrated DSP functions like EQ and DRC to reduce external processor load. Verify that the target application operates within the specified -20°C to +85°C temperature range.

Audio Special Purpose Part Context

The STA350BWTR belongs to the STA350B family, which includes variants with exposed pad down (BW) and exposed pad up (B) packages. The 'TR' suffix indicates the device is supplied in a Tape & Reel format suitable for automated surface-mount assembly. It is fully compatible with the STA339BW and STA339BWS families.

Audio Special Purpose Replacement Considerations

The STA350BW is functionally compatible with the STA339BW and STA339BWS. Designers should verify pin-to-pin compatibility and register mapping differences when substituting these models in existing layouts.