INA239: 5K resistors in sense leads

Wayne Weise

Part Number: INA239

I have a need to insert 5K resistors in the 3 sense leads. What would the impact be on the accuracy?

0 Clemens Ladisch 11 months ago

Guru 284570 points

The worst-case input bias current is 2.5 nA. This would result in a voltage drop of 12.5 µV.

+1 Mohamed Hamida 11 months ago in reply to Clemens Ladisch

Hi All,

Clemens is correct. Also, you should view this TIPL on input impedance and bias current for more information:

Best,

Mohamed

0 Wayne Weise 11 months ago in reply to Mohamed Hamida

Thanks for the help.

0 Mohamed Hamida 11 months ago in reply to Wayne Weise

No Problem!

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