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ADS7945: Handling of unused analog input terminals

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Replies: 2

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Part Number: ADS7945

Hi support team,

I have a question regarding unused analog input terminals of ADS7945.

If the customer doesn't use a pair of analog input terminals (AINxP, AINxN), can he left them open?
Or is it necessary to take measures such as pull-down or pull-up  and so on?

Sincerely,
M. Tachibana

  • Hi Tachibana san

    It is recommended to pull down unused ADC analog inputs to GND to avoid any possible crosstalk.

    Thanks & Regards
    Abhijeet
  • In reply to Abhijeet Godbole:

    Hi Abhijeet-san,

    Thank you for kindly teaching me.
    I understood that unused input terminals should be pulled down..
    By the way, is it okay for pull-down resistors to be 1 kΩ ~ 10 kΩ?
    Or are there any restrictions on the resistance value?

    Sincerely,
    M. Tachibana

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