LM4819高增益音频放大电路

音视频及家电

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描述

关键词: LM4819 , 放大电路 , 高增益 , 音频

如图所示为LM4819的高增益音频放大电路。只要增大R3即可提高放大器的增益。在R3两端并联电容C4,用于对高频提供低阻通路滤波,防止高频自激。J1为跳线,当J1接通时,1脚接地,全功率放大工作;当J1断开时,1脚为VDD,微功耗关断,放大器不工作。跳线J2也可控制放大器的工作与否,当J2断开时,+IN端无偏流而使放大器不工作。接通则工作。





LM4819高增益音频放大电路

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