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PCM2904 1 kHz and harmonics noise

Filippo Ottone
Prodigy 10 points
Other Parts Discussed in Thread: PCM2904

Hello,

I'm experiencing 1 kHz noise during acquisition (recording) from pcm2904.Also harmonics are present in the spectrum without others signal input. I have installed USB audio filter driver but nothing is different. I'm using windows 7.

If dual channel line in is selected the noise is greter then with single channel.

hope to find a solution.

  • 0
    TI__Guru* 95285 points
    Hi Filippo,

    Welcome to E2E and thank you for your interest in our products!

    This problem is documented in the Errata file at the product folder:
    www.ti.com/.../slaz036a.pdf
    I suggest you to follow the recommendations explained in this file and see if it fits your needs.
    However you can also move to a newer device like PCM290xC which are product from more recent revisions.

    Best regards,
    Iván Salazar
    Texas Instruments