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PCM5100: About the output low pass filter on PCM5100 DAC

Prodigy 230 points

Replies: 1

Views: 157

Part Number: PCM5100

Hello,

The suggested LPF on the PCM5100 DAC output is 470E and 2.2nF that gives a cut-off frequency of around 154KHz.

For the purpose of minimizing the unique parts in my BOM, I would like to use 316E and 3.3nF that would have a cut-off of around 153KHz.

I would like to know if the modification are ok to do or would it affect the performance adversely.

Thanks!!

With regards,

Ravindra..

  • Hi Ravindra,

    This modification is fine. PCM510xA device has out of band noise starting at about 190kHz, so an fC below that would be fine.

    Thanks,
    Paul

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