Geoffrey_Coram wrote on Feb 24th, 2016, 12:02pm:If the statistics are Gaussian, then there's a small (but non-zero) chance of getting a VT mismatch that's larger than say the 3-sigma point, so what do you mean by "worst case"?
I heard about one company that does what I think they called "Hadamard sampling": rather than picking the value for each mismatch parameter from the Gaussian distribution, they pick each one at ±σ or ±3σ. Then you're arguably more likely to get the worst case, since you're not doing all the runs with parameters close to nominal.
Hello Geoffrey_Coram,
Thank you very much for your reply. The worst case I mean is which can give me the largest mismatch and process variation. Currently, a single run takes me around 12 hours with liberal accuracy. If I try to find the case for ±σ or ±3σ, I still need to do a lot of run first. I just Wonder if I can avoid the Monte Carlo simulation, and based on the common experience to find the possible one or several worst cases, and run them directly.