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INA200: On the behavior of the comparator of INA200

Pokkun
Genius 4695 points

Part Number: INA200

Hi, team.

I posted the following thread.

e2e.ti.com/.../732488

Let me confirm CMPout behavior on INA200.

＜Quesiton＞

While Vin keeps Low (<0.6V), does CMPout keep Low even if RESET repeat High and Low?

On my customer’s verification, CMPout repeats high and Low linked with RESET.

Which is the correct behavior?

Customer's verification

Best regards,

Masumi Sekiguchi

  • 0
    TI__Mastermind 36730 points

    Hi Masumi,

    The nRESET pin should have no effect on the comparator output, other than it either latches or clears it. The comparator output is solely determined by the comparator inputs.

    However, the slew rate of the nRESET could have an effect on the comparator output and result in unexpected behavior. This is spelled out in the datasheet, section 7.3.3 toward the bottom of page 14. Please take a look and let us know if this helps.

    Regard, Guang