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TMCS1126: How to calculate this 1.45% accuracy

Brian Li
Genius 12740 points
Part Number: TMCS1126

Hi team,

We are now promoting our TMCS1126xxA. And we can saw from the datasheet that precision signal conditioning circuitry with built-in drift compensation is capable of less than 1.45% maximum total error over temperature and lifetime with no system level calibration.

Could you please kindly help check how can we calculate this 1.45%?

For example, Sensitivity error: ±0.1%, Non-linearity: ±0.1%, lifetime drift: ±0.5%. 

Thanks,

Brian

  • 0
    TI__Expert 4580 points

    Hi Brian,

    Thanks for the question and using the E2E forum.

    We're looking into this and will give you an update when we return from the holiday week.

    Louis

  • +1 in reply to Louis L
    TI__Mastermind 23600 points

    Hey Brian,

    The 1.45% value is based on maximum sensitivity error (±0.45%), maximum sensitivity thermal drift (±50ppm over 100°C rise max), and sensitivity lifetime drift (±0.5%). So 0.45 + 0.005*100 + 0.5 = 1.45%

    Regards,

    Mitch