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TLV320AIC3104: 在输出端并联电容有噪音

Part Number: TLV320AIC3104
Other Parts Discussed in Thread: TIDA-00724

TLV320AIC3104+TAS5411

1、配置成PCM(TDM)模式,贴了C4620,输出有噪音,去掉C4620后无噪音

2、配置成I2S模式,贴了C4620,无噪音。

3、TI的EVM上也有C4620这颗电容,请问这颗电容的作用是什么?为什么会带来噪音呢?