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INA148-Q1: the specification will not change even after 10 years on user board ?

Paul Kim
Intellectual 1430 points
Part Number: INA148-Q1

Hi Team

one of big Car makers(GM) asked about the parameters spec(DC Offset/Gain Error/Gain Nonlinearity) can still be inside of Datasheet spec after 15 years liftime on user board ? may I get BU's confirm ?

  • 0
    TI__Prodigy 575 points
    Hi Paul,

    No, we do not make any specific claims on the stability of parameters over time with respect to the datasheet on AEC-Q100 certified devices. There are too many application variables, especially over the course of 15 years, for us to guarantee specifications will remain within a given range.

    However, Marek Lis from the Precision Amplifier Applications group wrote a great article that can help estimate the variance of specific parameters considering the Arrhenius Equation, Acceleration Factors, and the operating temperature of the device:

    e2e.ti.com/.../ic-long-term-stability-the-only-constant-is-change

    Additionally, we have some tools also based on the above equations that can help estimate the life expectancy of a TI device:

    www.ti.com/.../estimator.tsp

    www.ti.com/.../temperature_change_FIT.page

    Finally, it may be worth explaining to GM how our Typical and Maximum values work. Our Typical value ranges for the parameters of interest represent one standard deviation (~67%) of all devices ship, but most shipped devices are closer to zero for DC offset, gain error, and gain nonlinearity, whereas Maximum values are tested values and no shipped device's specifications will exceed the Maximum datasheet value (assuming the same test conditions in the datasheet are adhered to).

    Christopher Stemple
    Product Marketing - Precision Amplifiers