Sir, I tried the simulation of PMOS for its current characteristics in SPICE,spectre using spice Netlist reader and also in cadence format. I compared the simulation results of all. Each simulator results doesn’t match with one another. Even the spectre results using Netlist reader and cadence format. Why these differences occur? How to tune the tool to produce desired results? How to find what parameter values of pmos devices are taken for calculation? Help. With regards, V G Ramnath [email][/email] Remove XXX and YYY to mail.