Ken Kundert
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Seems to be wrong? That is rather vague. Perhaps you could elaborate?
My experience with these types of simulationsis that you need to be careful that the interpolation of the flicker noise by the waveform tool does not corrupt the result. Make sure you have several analysis points below the flicker noise corner frequency.
To know whether you need to sample the output of your circuit, you need to think about the circuit that follows the chopper. If is a sampling circuit, then you should sample.
You do not need to build a sample and hold. The simulator can sample the result for you, though the interface is rather awkward.
-Ken
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