Electronics > Beginners
Offset Current simulation in pspice
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roogadget:
I am trying to figure out why the pspice output is -82.04mV when the theoretical calculations are 95mV.

I am using the formula:

R1||RF * Ios = 10k||200k * -200nA = -0.0019mV

Open-loop Gain = 50k

-0.0019mV * 50k = -95mV

I am following the guides from this document:
http://www.zapstudio.com/Assets_Publish/OAC%20CH2%20Simulation%20Offset%20I_V%20Noise.pdf


iMo:
Afaik, the R13 should be the parallel combination of R1 and R4.
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