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INA138-Q1: about input bias current

Paul Kim
Intellectual 1430 points
Part Number: INA138-Q1

Hi team

INA138-Q1 D/S say Input bias current = Max 10uA.

so total input bias current would be Max 20uA(= 10uA x 2) for two input pins ?

further, may I know total input bias current for  two input pins at Vs = 0V and common mode voltage = 20V ?

  • 0
    TI__Mastermind 21760 points
    Hello Paul,

    Thank you for your interest in our INA138-Q1. The input bias current in the datasheet corresponds to the average value for both inputs, so the max will be 20uA.
    For this device architecture, we expect the input bias current to basically be 0 when Vs=0V