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INA303: using Latched mode vs slow power-up

Expert 4990 points

Replies: 2

Views: 60

Part Number: INA303

Hi,

in our application INA303 is putting the ALARM pin in an active state, immediately after power up (this is likely due to the slow power-up as mentioned in the datasheet). 

Now, we also use the Latched mode, which holds the ALARM state and a reset is required. After the reset, everything works fine.

Question, is there any hardware workaround here, or just the software one (disregarding the alarm until power up stage is finished)? Would like to keep using Latched mode while not needing to perform a reset, hardware workaround would be best to have.

Thanks.

  • Hey Bart,

    A capacitor to ground could be placed at the LATCH pin so this voltage is slower than the VS ramp to keep it in transparent mode temporarily. 

    Hope this helps.

    Best regards,

    Peter

  • Expert 4990 points

    In reply to Peter Iliya:

    Hi Peter,

    thanks a lot, this helped!

    Kind regards

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