INA159 Gain Long-Term Drift

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!

2 Replies

  • 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.

  • In reply to Bruce Trump:

    Hi Bruce,

    Great! thanks for your reply.