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Created December 10, 2013
Last modified December 10, 2013
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So I'm not sure but this circuit appears to excite some sort of bug or convergence problem.

Running Frequency domain simulation looking at the labelled nodes, R24 set to >~1.92M all seems to run fine. I'm interrogating the phase and gain at each of the nodes. However, below about 1.9M ohm, the gain plots go from ~0dbV gain in the low end to about -200dbV in a very nonlinear fashion. Something appears to be breaking as the simulation time also seems to blow up - so likely a convergence issue... Any suggestions? Should I change op-amp models?

by jonhayenga
December 10, 2013

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