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TLV320AIC3105: noise issue at DINpin=L

Yusuke Mukuno
Expert 7395 points

Part Number: TLV320AIC3105

Hi Expert,

My customer have an issue about the noise on RIGHT_LOP line at DIN=L.

Behavior,

1) They sent any audio signal to DIN. then, DIN signal was changed to Low.

    At this situation, they found the noise 24mV to 42mVrms on RIGHT_LOP line, even if  DIN is Low.

2) After powered up TLV320AIC3105 and they have never sent any signal to DIN, the noise on RIGHT_LOP line was 0.5mVrms(no problem)

Could you please give me your advice for improvement?

Thanks

Muk