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PCM2912A: Noise on Windows 10 X64 version

Shu-Cheng LIN
Guru 11785 points
Part Number: PCM2912A

Hi Sirs,

As title

1. Could you help double confirm schematic again?

PCM2912A.pdf

2. When connected to headphones in Windows 10 X64, as long as there is use of windows sound effects, such as windows keyboard, audio bar sound ... and so on.  Except the original sound will be appeared, the background sound will appear noise as well.  Moreover, the noise will continue for some time before it will end

Add windows sound effects +noise waveform

Could you share the experience for fix this noise?

By the way, our device no speaker.

Thanks!!

  • 0
    TI__Guru 57800 points

    Hi, Shu-Cheng,

    This is not an expected behavior for this device, the schematic seems to be working fine. Can you please provide more details about the issue? is the noise present in the headphone outputs?, where is the signal measured?. Is the issue replicable only with Windows 10?.

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer