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What is the current noise density(f=1KHz) of the OP4177?

Hi team,

Our products are sensitive to op amp noise performance. I'm having some problems researching the noise performance of the OP4177.

I see a current noise density of 0.2pA/√Hz in the OP4177 DataSheet.

But when I used the spice model of OP4177 to simulate on LTspice, I found that the simulation result was 0.857pA/√Hz.

I tried to simulate other op amps with this testbench, and the results are all correct, so the testbench should be correct. Then I suspect that the DataSheet data is wrong, or the spice model of OP4177 is wrong, please check it.

Looking forward to your reply, thanks!

All the best,


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