ST STA381BW平板电视2.1通路数字音频系统解决方案

ST公司的STA381BW是2.1通路高效数字音频系统,嵌入了数字音频处理,数字放大, FFXTM功率输出级,耳机和2Vrms线路输出,为从源到扬声器提供了所有的数字音频流,具有成本效益,低功耗和增强的声效果. STA381BW的工作电压从4.5V到26V,最大到30V,I2C控制和I2S接口,取样速率32kHz-192kHz,具有多种保护功能如短路,热,过流和欠压保护,1Vrms立体声模拟输出,三种输出功率级配置,可驱动2x20W8欧姆负载或2x9W 4欧姆+1x20W 8欧姆负载,主要用在轻薄型平板电视和家庭娱乐系统.本文介绍了STA381BW主要特性和方框图,数字信号处理通路框图以及多种应用电路.

The STA381BW is an integrated solution embedding digital audio processing, digital amplification, FFXTM power output stage, headphone and 2 Vrms line outputs. It is part of the Sound Terminal® family and provides full digital audio streaming from the source to the speaker, offering cost effectiveness, low power dissipation and sound enrichment.

The STA381BW input section consists of a flexible digital input serial audio interface, feeding the digital processing unit, and an analog 1 Vrms input for a seamless connection with pure analog sources. The serial audio data input interface supports many formats,including the popular IIS format.
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