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INA213-Q1: INA213-Q1 Failure Mode

Koji Hayashi92
Mastermind 6970 points
Part Number: INA213-Q1

Hi All,

I think that there are various phenomena when it comes to failure mode, but is there any symptoms that the output voltage becomes a fixed value in that?

Best Regards,
Koji Hayashi. 

  • 0
    Guru 140200 points
    Hi Koji,

    this would be improbable but not impossible. Can you show us a schematic and describe the error?

    Kai
  • 0
    TI__Mastermind 21670 points

    Hello Koji,

    Thanks for considering Texas Instruments in your design.  Depending on which datasheet specification is exceeded, you may observe different failure behavior and the output voltage may vary.  One quick way to check if the part has failed, would be to see if the quiescent current and offset voltage are higher than expected.  Another more tedious check would be to see what kind of % error you are getting.  Fortunately there is a handy tool (figure 1 below) on the INA213-Q1 product page that can help you quickly see what amount of error you should be seeing for some given operating conditions.

    Figure 1

  • 0 in reply to Patrick Simmons
    Mastermind 6970 points
    Hi Kai-san and Patrick-san

    Thnak you for response.

    Since it is a review phase, there is no circuit yet. Therefore it does not mean that it failed.


    My customer consider whether the output may be fixed depending on how to break.
    Is there a possibility that the output voltage will break down at a fixed value regardless of the input voltage.


    Best Regards,
    Koji Hayashi.
  • 0 in reply to Koji Hayashi92
    Guru 140200 points
    Hi Koji,

    the output going to a fixed voltage without going into saturation? Very improbable...

    Kai
  • 0 in reply to kai klaas69
    TI__Mastermind 21670 points
    Hello Koji-san,

    Depending on how you break the device, it potentially could output at a fixed voltage between the supply and ground. However, this would most like exhibit some variation between devices. Additionally, it would be difficult for us to predict without knowing the specific absolute max rating violation the device will be subjected to. Lastly, we typically do not characterize the performance of a broken device.

    Best regards,
    Patrick
  • 0 in reply to Patrick Simmons
    Mastermind 6970 points
    Hi kai-san and Patrick-san

    Thank you for response.

    If there is a phenomenon, is there anything else that can be thought of besides the "open" of the wiring of the internal circuit?
    Please let me know if it exists.

    Best Regards,
    Koji Hayashi.
  • 0 in reply to Koji Hayashi92
    TI__Mastermind 21670 points
    Hello Koji-san,

    As stated above, if the part breaks we can only expect the device to have an output between the device ground and supply. However, we cannot predict what the exact output will be.