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ADS7828-Q1: ABS MAX limit on ADC input voltage

Part Number: ADS7828-Q1

Hi,  There is not an ABS max number in the data sheet just a operating limits.  Is this limited by the ESD cells, and also can you limit the current through them to 5mA or so, and I am aware that this wil add an inaccuracy and also more time need to charge the sample cap

  • Hi Ajay,

    We usually include this information so I'm a little surprised it's not in there for the ADS7828-Q1.  I pulled down the original datasheets and it's also not there so it wasn't accidentally included later.

    Since the digital inputs are ESD clamped to the supplies, it's very likely that the analog inputs are as well.  Therefore, use the same abs max ratings for the digital inputs and keep the current <1mA if you think the ESD cells may conduct regularly.