xschem/test_nmos_sizes.spice

**.subckt test_nmos_sizes
XM1 D1 G 0 VSS sky130_fd_pr__nfet_01v8_lvt L=L W=1 nf=1 ad='W * 0.29' as='W * 0.29' pd='2 * (W + 0.29)'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 mult=1 m=1 
XM2 D2 G 0 VSS sky130_fd_pr__nfet_01v8_lvt L=0.15 W=W nf=1 ad='W * 0.29' as='W * 0.29' pd='2 * (W + 0.29)'
+ ps='2 * (W + 0.29)' nrd='0.29 / W' nrs='0.29 / W' sa=0 sb=0 sd=0 mult=1 m=1 
V2 D D2 0
V1 D D1 0
**** begin user architecture code
 ** manual skywater pdks install (with patches applied)
* .lib /ef/tech/SW.2/sky130A/libs.tech/ngspice/models/sky130.lib.spice tt

** opencircuitdesign pdks install
.lib /ef/tech/SW.2/sky130A/libs.tech/ngspice/sky130.lib.spice tt

.param mc_mm_switch=0
.param mc_pr_switch=0

**** end user architecture code
**.ends
**** begin user architecture code

* .option SCALE=1e-6
.option method=gear seed=12
.param L=0.15
.param W=0.5

vd d 0 0
vg g 0 0
.control
dc vd 0 2 0.01 vg 0 2 0.2
alterparam L=0.18
alterparam W=1
reset
dc vd 0 2 0.01 vg 0 2 0.2
alterparam L=0.3
alterparam W=2
reset
dc vd 0 2 0.01 vg 0 2 0.2
alterparam L=0.5
alterparam W=3
reset
dc vd 0 2 0.01 vg 0 2 0.2

.endc





**** end user architecture code
** flattened .save nodes
.save I(V2)
.save I(V1)
.end