ST STA350BW 2x50W 2.1通路数字音频系统解决方案

ST 公司的STA350BW是 2x50W 2.1通路数字音频系统，集成了数字音频处理，数字放大器控制和FFX功率输出级。输入电压5V-26V，四路输出配置，25V时能向6欧姆提供2x50W输出功率，100dB SNR和动态范围，输入取样速率在32kHz到192kHz间选择，I2C控制，数字控制增益从+42dB到-80dB，每步分辨率0.125dB。本文介绍了STA350BW主要特性，方框图，单声道并行BTL电路图，电源电路图，立体声BTL模式输出配置图以及STA350BW 2.0通路演示板电路替，输出滤波器电路图和材料清单。

STA350BW：Sound Terminal® 2.1-channel high-efficiency digital audio system

The STA350BW is an integrated solution of digital audio processing, digital amplifier control, and FFX-power output stage, thereby creating a high-power single-chip FFX® solution comprising high-quality, high-efficiency, and all-digital amplification.

The STA350BW is based on an FFX (fully flexible amplification) processor, a proprietary technology from STMicroelectronics. FFX is the evolution and the enlargement of ST’s ternary technology: the new processor can be configured to work in ternary, binary, binary differential and phase-shift PWM modulation schemes.

The STA350BW contains the ternary, binary and binary differential implementations, a subset of the full capability of the FFX processor.
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