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OPA890: Input and ESD protection

Naser S.
Genius 11605 points
Part Number: OPA890

HI, In OPA890 datasheet (section Input and ESD protection) it is stated that all device pins are protected with internal ESD protection diodes to the power supplies. I guess it relates not only to the inputs, but to the output as well. My customer question is if I can rely on this output protection diodes during 20ms power up when OPA890 power is not applied yet, but its output is subjected to 1mA current from external circuit. Thanks.

  • 0
    TI__Expert 7970 points
    HI Naser,

    The ESD diode on our devices are designed specifically to handle high voltage and short duration ESD voltage events. They are not designed or characterized for handling a constant current like this scenario. If the 1mA current cannot be avoided through other means, an external clamp will need to be added in this case.

    Regards,