STA369BWS

Audio Special Purpose Overview

The STA369BWS is a fully integrated digital audio subsystem from STMicroelectronics, combining digital signal processing, amplifier control, and power output stages. It utilizes the FFX modulation scheme to deliver high-efficiency amplification with a 100-dB SNR. The device supports a wide supply voltage range of 4.5 V to 21.5 V and operates within an ambient temperature range of -20°C to 70°C. It features I2C control and I2S input interfaces, allowing for flexible configuration of up to three channels. Key electrical capabilities include selectable input sample rates from 32 kHz to 192 kHz and comprehensive digital gain control ranging from +48 dB to -80 dB.

Audio Special Purpose Feature Summary

• FFX modulation technology providing 100-dB SNR and scalable modulation index up to 100%.
• Configurable power output modes including 2-channel ternary PWM (2 x 20 W into 8 Ω) or 2.1-channel binary PWM (2 x 9 W + 1 x 20 W).
• Integrated DSP with up to 8 programmable biquads per channel, dual-band DRC, and dedicated LFE processing.
• I2C control interface with selectable device address and I2S serial audio input supporting multiple formats.

Audio Special Purpose Applications

• High-efficiency digital audio systems in flat-screen TVs.
• MP3 docking stations requiring space-constrained audio solutions.
• Home entertainment equipment utilizing pre-amplifier configurations.

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm packaging type. The STA369BWS variant is supplied in a Tube package, whereas the STA369BWSTR variant uses Tape and Reel packaging. Confirm thermal characteristics and application suggestions in the datasheet for proper PCB layout and heat dissipation requirements during design integration.

Audio Special Purpose Selection Notes

Select this component when a single-chip solution for high-power digital amplification is required. Ensure the system design accommodates the 4.5 V to 21.5 V supply voltage range. Verify that the target application can utilize the I2S interface for audio input and I2C for configuration. Consider the PowerSSO-36 EPD package dimensions and thermal resistance values if operating near maximum power limits.

Audio Special Purpose Part Context

The STA369BWS belongs to the Sound Terminal family of digital audio ICs. This family is designed to provide full digital audio streaming from source to loudspeaker, eliminating the need for external analog-to-digital converters. The device integrates advanced DSP features such as multi-band dynamic range compression and bass management to enhance audio performance while reducing overall system size and cost.

Audio Special Purpose Replacement Considerations

The STA369BWSTR is the tape-and-reel version of the same component. No other direct cross-model substitutes are documented in the provided data.