PCM2912A: PCM2912A

Amarnath Subramanian

Part Number: PCM2912A

Hello all,

I am using PCM2912A for audio codec & INA21AIDWT for pre-amplifier. I am finding continuous noise at the audio output, Can you please guide me the arrival of noise and give me an solution to solve it.

Its a serious issue going on.Kindly give me an solution to solve it as soon as possible.

PCM2912A_AUDIO CODEC.pdf

over 6 years ago

0 Diego Melendez over 6 years ago

TI__Guru 57800 points

Hi, Amarnath,

Can you please specify where is the noise being detected?. If it is in the analog input (mic), it is possible to try with a different input source to discard a problem with the codec?. I took a look to the PCM2912A section of the schematic and in general everything seems to be in order.

Best Regards,

-Diego Meléndez López
Audio Applications Engineer

0 Amarnath Subramanian over 6 years ago in reply to Diego Melendez

Prodigy 185 points

Hello Diego Meléndez López,

70% of noise arising from INA217AIDWT Amplifier. 30% of noise arising from PCM2912A Codec.

Best Regards,
Amarnath G

0 Amarnath Subramanian over 6 years ago in reply to Amarnath Subramanian

Prodigy 185 points

Hello Diego Meléndez López,

Its a 2 layer PCB.

Audio

Audio forum

PCM2912A: PCM2912A