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Author Topic: Offset Current simulation in pspice  (Read 506 times)

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Offline roogadgetTopic starter

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Offset Current simulation in pspice
« on: March 28, 2019, 10:49:44 am »
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


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Offline iMo

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Re: Offset Current simulation in pspice
« Reply #1 on: March 28, 2019, 12:05:22 pm »
Afaik, the R13 should be the parallel combination of R1 and R4.
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