Parameters: Level: MOSFET modeling level (default value = 3) Level=0: Static injection model Level=1: Shichman-Hodges model Level=2: Grove-Frohman model Level=3: Empirical model Level=4: Simplified Grove-Frohman model IS: Transport saturation current (default value = 0 Amp) EG: Energy gap for temperature effect on saturation current (default value = 1.11 Volt) EMin: if x < EMin, the exp(x) function is linearized (default value = -100) EMax: if x > EMax, the exp(x) function is linearized (default value = 40)