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LM4819: Volume control using digipot in feedback

Chetan Sanghavi
Prodigy 10 points
Part Number: LM4819

Hi,

I plan to add volume control using a digipot in feedback path of LM4819. Is this a good option or is there a better alternative?

The amplifier gain would be less than 10 so as per datasheet Cf is not required across the digipot.

Please correct me if I'm wrong.

Best regards,

CVS

  • 0
    TI__Mastermind 20085 points
    Hello Chetan,

    Welcome to E2E, thanks for your interest in our products.
    You shouldn't have any problem using a digipot in feedback. As the datasheet mention, Cf is not required when the amplifier's gain is less than 10.

    Best Regards
    José Luis Figueroa
    Audio Application Engineer