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INA240-Q1: Reference Divider Accuracy

Yineng Li
Prodigy 20 points
Part Number: INA240-Q1

Tool/software:

Does the reference divider accuracy (0.1% MAX) mean that the maximum imbalance between REF1 and REF2 is 0.1%?

For example, if Rref1 is 50 kΩ, does this mean that the resistance of Rref2 is between (1-0.1%)*50 kΩ and (1+0.1%)*50 kΩ? Is my understanding correct?

  • +1
    TI__Mastermind 34060 points

    Hi,

    Your understanding is correct. The worst case is REF1=(1-0.1%)*50 kΩ and REF2=(1+0.1%)*50 kΩ, or vice versa.

    As an example, suppose VS=5V, the resulting reference voltage generated by the divider would be in the range of (1±0.1%)*2.5V

    Regards

    Guang