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ADS7138 : ALERT and unused AINx

Shinji Tsuji
Genius 14289 points


Hi team,

Could you advise below?

1. How much is the absolute maximum ratings of ALERT pin?

I would like to know if 5V is applied through register as pull up for open drain output when DVDD=3.3V.

2. Could you advise how to configure unused AINx pin?

Is that OK to leave it open?

regards,

  • 0
    TI__Mastermind 25030 points

    Hello,

    The ALERT pin is recommended to max DVDD, but it is likely to be work correctly to the rated absolute max of 5.5V as the digital inputs are rated.

    If you have unused analog inputs, you can ground these. Leaving them open is acceptable as well

    Regards

    Cynthia