I was wondering how to best model a N-well in a substrate model. Is a diode model sufficient? If so, should the size simply reflect the total surface area? Any papers or documents about this would be appreciated. Thanks.
In many cases simple N-well to psub diode model is suuficient. However in some cases there is importance also for resistance from the current point in the nwell to the nwell tie, for example when you are investigating latch-up problem.