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INA206: Power supply and output voltage level

Sarmad
Intellectual 340 points
Part Number: INA206

The datasheet of INA206 specify the operating supply range from 2.7V - 18V, however the device shows unusual behavior when powered from a 3.3V source i.e. comparator's output does not go high when it is expected to. The same circuit behaves correctly when powered using 5V with comparator's output pulled-up to 3.3V using 1K resistor. My design requires output from the INA 206 comparator at 3.3V level. And I am testing the same in TINA by editing the reference design. Can someone please identify if there is something wrong with the schematic or is it supposed to behave like this?

  • 0
    TI__Mastermind 23695 points
    Hello Sarmad,

    Thanks for considering to use Texas Instruments in your design. Can you go into a little more detail on the unusual behavior? Is there a delay before it returns to high or does the load current have to be substantially lower than the initial trigger point before the comparator output returns to high?
  • 0 in reply to Patrick Simmons
    TI__Mastermind 23695 points
    Hello Sarmad,

    I have not heard from you in a while. As such I presume you have resolved your issue. However, if you are still having issues, feel free to reopen the thread and update us on your progress. If you do re-open the thread, please provide us with a scope shot so we may be able to diagnose your problem.