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Question of the PCM5102A EVM's 100kR Pull Low Resistance

Wayne Chen (Audio AE)
Genius 15950 points
Other Parts Discussed in Thread: PCM5102A

Hi Sirs,

Would you pls advise the reason to use 100kohm weak pull low resistors with the PCM5102A EVM? Any power consumption concern to connect them to GND directly if we need a logic low?



Thank you and Best regards,

Wayne Chen

  • 0
    TI__Guru 57800 points

    Hi, Wayne,

    The inclusion of the pull down resistors in the EVM is made so the DUT will have a logic zero even if the shunts of the W3 connector are not populated. For the end-system application, these resistors will not be required as the control signals will be determined by the µC unit of the system.

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer