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PCM9211: Can AGNDAD left floated?

Eng Lih Khaw
Expert 1990 points
Part Number: PCM9211

Hi,

Customer of mine would like to know if they can leave the AGNDAD (pin 45) floated if the internal ADC is not used?

Would it caused any mulfuction to this device?

Kindly advise.

  • 0
    TI__Guru 57800 points

    Hi, Eng Lih Khaw,

    It is recommended to keep the AGNDAD pin connected to GND plane even if the ADC is not used. This is done to ensure proper grounding between the internal connections with ADC block. 

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer