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Re: Convergence problem with Sallen-Key filter circuit


 

Hello Jan,

Your circuit finds the operating point aftre a long time in the pseudo transient analysis.

You can automatically skip the other methods. See below.

.options noopiter gminsteps=0 srcsteps=0


This opamp is for resistors with a resistance below 1kOhm at it's input due to its maximum bias current of 10uA. It's the wrong opamp for your application of a lowpass filter with 10kHz cut-off frequency.

Best regards,
Helmut



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