TLV320AIC3106: band pass filter for audio

Abhineet Ranjan

Part Number: TPA2012D2

Hello Ti,
I am using TLV320AIC3106IRGZT and TPA2012D2RTJR, but getting very high noise,

can you suggest audio filter ( using LC or RC) to be implemted between TLV320AIC3106IRGZTTLV320AIC3106IRGZT and TPA2012D2RTJR.

Regards
Abhineet Ranjan

over 1 year ago

0 Ivan Salazar over 1 year ago

TI__Guru** 106885 points

Hi Abhineet,

Could you please clarify if the noise is observed at the output of AIC3106 or only at the output of TPA2012D2? This helps to get the proper support.

Best regards,
-Ivan Salazar
Applications Engineer

0 Abhineet Ranjan over 1 year ago in reply to Ivan Salazar

Intellectual 635 points

The noise is at the output of AIC3106

0 Ivan Salazar over 1 year ago in reply to Abhineet Ranjan

TI__Guru** 106885 points

Hi Abhineet,

Thanks, I'll reassign this to AIC devices support.

Best regards,
-Ivan Salazar
Applications Engineer

0 Ivan Salazar over 1 year ago in reply to Ivan Salazar

TI__Guru** 106885 points

Hi Abhineet,

Have you checked if the noise is present only after the RC filter? You may check with 100Ω and 47nF.
Please share further details on AIC3106 implementation so that team can better understand the kind of noise and possible reasons for it.

Captures of the noise at output of AIC3106. Is the noise present all the time or only during playback?
Share all the clock frequencies used for AIC3106.
Share the register configuration.

Best regards,
-Ivan Salazar
Applications Engineer

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TLV320AIC3106: band pass filter for audio