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Long-term stability of the INA216

Sopatopa
Intellectual 470 points
Other Parts Discussed in Thread: INA216

We are considering the INA216 current measurement applications of less than 1%.
Apart from the aging of the external resistor, Do you have any information that there how much aging of IC only?

There is information about the long-term stability of TI op amp of the pages below, but, is it may be the same?

Any thoughts would be appreciated!

Regards, sopatopa

  • 0
    Intellectual 470 points

    I'm sorry, I was missing the information that I have seen.

    Information I have seen is this.

    http://e2e.ti.com/support/amplifiers/precision_amplifiers/f/14/t/157178.aspx

    INA216 also What will the same idea as this?

    Please tell us about the gain error in particular.

    Regards,sopatopa

  • 0 in reply to Sopatopa
    TI__Expert 6930 points

    Hi Sopatopa,

    Thank you for your question regarding the INA216.  Yes, the aging process described in the post you referenced will also apply to the INA216.  Particularly you asked about gain error...the interpretation is that the gain error maximum is specified at 0.2% for the INA216 at time zero and over the lifetime of the product a maximum shift of an additional 0.2% would be acceptable per our quality guidelines.  This would result in a threoretical maximum of 0.4% gain error at the end of life...this is truly a worst case approximation.  Typically the gain error at time zero is in the 0.01% range and the shift due to aging while allowed to be the full 0.2% is typically substantially less.