基于PCM2702E和LME49830的音频功率放大器设计与实现

Design and realization of audio power amplifier based on PCM2702E and LME49830

为改善和提高普通声卡的品质,使用USB接口DAC(数模转换器)芯片PCM2702E完成对数据流中音频信号的还原,并采用专为驱动MOSFET管而设计的高性能音频驱动LME49830芯片,设计出高品质新型音频多媒体功放。该功放能显著减少由于音源和功率放大器之间距离较远所导致信号传输过程引入的干扰。

To improve and enhance the quality of ordinary sound card,using the USB interface of DAC（ digital to analog converter） chip PCM2702 E to complete the reduction process from the data stream to the audio signals,the specially designed high performance audio driver LME49830 chip for driving MOSFET is used for designing a high quality new multimedia audio power amplifier. The power amplifier can significantly reduce the interference which is caused by long distance signal transmission process between the power amplifier and the signal source.