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INA159 Gain Long-Term Drift

INA159 Gain Long-Term Drift

This question is not answered
Gerry Lee
Posted by Gerry Lee
on Dec 26 2012 00:21 AM
Prodigy105 points

HI All,

Is there anybody who can help provide me the parameters of ' Gain Long-Term Drift' or ‘Resistor Matching Ratio Long-Term Drift’' under condition of 70°C and 2000 hours for INA159? thanks in advance!

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  • Bruce Trump
    Posted by Bruce Trump
    on Dec 26 2012 11:23 AM
    Mastermind21545 points

    Gerry,

    The gain of the INA159 is set by the ratio of internal SiCr resistors. These resistors have excellent stability and matching characteristics. Though we do not have long-term data specific to the INA159, we have much experience with these resistors on many types of products. I would expect that the gain change at 70'C for 2000 hours to be very small and difficult to measure, probably in the range of 10ppm.

    Regards, Bruce.

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  • Gerry Lee
    Posted by Gerry Lee
    on Dec 26 2012 22:01 PM
    Prodigy105 points

    Hi Bruce,

    Great! thanks for your reply.

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