[原创] TI TAS5782M 30W立体声D类放大器方案

TI公司的TAS5782M是具有96kHz处理的30W立体声闭环D类放大器,具有灵活的音频I/O配置,支持I2S,TDM,LJ,RJ数字输入,支持3线数字音频接口,1W 1kHz时的THD+N=0.2%, SNR=103dB,主要用在LCD, LED TV和多种用户的监视器,条形音响,坞站和PC音频,无线低音喇叭,蓝牙扬声器和有源扬声器.本文介绍了TAS5782M主要特性,框图和应用电路,以及评估板TAS5782MEVM主要特性,电路图,材料清单和PCB元件装配图.

The TAS5782M device is a high-performance, stereoclosed-loop Class-D amplifier with integrated audioprocessor with up to 96-kHz architecture. To convertfrom digital to analog, the device uses a highperformance DAC with Burr Brown™ audiotechnology. It requires only two power supplies: oneDVDD for low-voltage circuitry and one PVDD for high-voltage circuitry. It is controlled by a softwarecontrol port using standard I2C communication.

An optimal mix of thermal performance and devicecost is provided in the 90 mΩrDS(on) of the outputMOSFETs. Additionally, a thermally enhanced 48-PinTSSOP provides excellent operation in the elevatedambient temperatures found in modern consumer electronic devices.

TAS5782M主要特性:

1• Flexible Audio I/O Configuration
– Supports I2S, TDM, LJ, RJ Digital Input
– Sample Rate Support
– BD Amplifier Modulation..

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