INA231: Where is the Input bias current 10uA？

alex.cao

Prodigy 20 points

Part Number: INA231

Tool/software:

Hi，

The datasheet description that "IIN+, IIN-， input bias current 10μA".

I would like to know whether 10uA refers to I1+I2 in the picture?

4 months ago

0 Clemens Ladisch 4 months ago

Guru 273470 points

The input bias current is measured per pin.

Also see figure 7-13:

0 Mitch M 4 months ago

TI__Mastermind 21035 points

Hello Alex,

As Clemens noted, the 10µA is the current into each pin for IN+ and IN-. From your image above, you would not have both I1 and I2, since you would only have either the high side or low side shunt resistor, not both at the same time.

Regards,

Mitch

Amplifiers

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INA231: Where is the Input bias current 10uA？