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ADS8910B: Gain Drift Spec

Ting Ye
Genius 11800 points
Part Number: ADS8910B

Hello Team,

ADS8910B gain drift typical value is +/-2.5ppm/C. May I know if we should use the standard deviation (sigma) to estimate gain drift maximum spec?

For instance, +/-5 sigma (1 out of ~1.7M) max gain drift spec indicates +/- 12.5ppm/C.

Thank you.

Regards,

Ting

  • 0
    TI__Mastermind 36170 points
    Hello Ting,

    For this part, we specify the maximum gain error over temperature of +/-0.02%. This equates to a worst case average gain drift of 0.04%/165C~2.5ppm/C. There will be temperature ranges where this will be higher or lower, but Figure 18 in the datasheet shows that this is approximately linear.

    For a narrow temperature range, I would not assume greater than 5ppm/C worst case, and guaranteed specifications of +/-200ppm worst case gain error over the full temperature range.

    Regards,
    Keith N.
    Precision ADC Applications