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Monte Carlo simulation of op amp with 90 dB gain

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mischivis

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I have a 90 dB DC gain op amp I am using for a pipeline ADC. I am trying to characterize the 3 sigma offset
with Monte Carlo simulation. The problem I am running into is that because the opamp has so much gain,
any small offset induced by the Monte Carlo simulation causes the opamp to rail high and low. Does anybody
know how to run a Monte Carlo simulation for offset of an opamp with this large of a gain?
 

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