AnalogDE
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There is post-processing because you need to run a monte carlo for each input.
For example if you have your threshold at 0mV differential you would run a bunch of MC simulations around 0mV Vin (-2mV, -1mV, 0mV, +1mV, +2mV), etc. Each MC simulation gives you the number of times your comparator outputs a 1 (or 0). From that, you can fit a line to extract the stddev of the offset.
Unless there's a way you can loop the MC run in your simulator you will have to do some post-processing. (If you know how to do this in eldo, I'd be interested. I had to hack together my own perl script to do it.)
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