A Depletion-Load Inverter

** Circuit Description **
* dc supplies
Vdd 1 0 DC +5V
* input digital signal
Vi 3 0 DC 0V
* MOSFET circuit
M1 2 3 0 0 nmos_enhancement_mosfet L=3um W=9um
M2 1 2 2 0 nmos_depletion_mosfet L=9um W=3um
* mosfet model statements (by default level 1)
.model nmos_enhancement_mosfet nmos (kp=40u Vto=0.7V phi=0.6V gamma=1.1)
.model nmos_depletion_mosfet   nmos (kp=40u Vto=-3V  phi=0.6V gamma=1.1)
** Analysis Requests **
.DC Vi 0V +5V 20mV
** Output Requests **
.PLOT DC V(2)
.probe
.end