| **.subckt FB1 vg vd |
| *.opin vg |
| *.opin vd |
| XM1 vd vg GND GND sky130_fd_pr__nfet_01v8 L=0.15 W=1 nf=1 ad='int((nf+1)/2) * W/nf * 0.29' as='int((nf+2)/2) * W/nf * 0.29' |
| + pd='2*int((nf+1)/2) * (W/nf + 0.29)' ps='2*int((nf+2)/2) * (W/nf + 0.29)' nrd='0.29 / W' nrs='0.29 / W' |
| + sa=0 sb=0 sd=0 mult=1 m=1 |
| v1 vg GND 1 |
| v2 vd GND 0 |
| **** begin user architecture code |
| |
| .option TEMP=27C |
| |
| .dc v2 0 3 0.01 |
| |
| .control |
| set color0 = rgb:f/f/f |
| alter @v1[dc] = 1 |
| print @m.xm1.msky130_fd_pr__nfet_01v8[vdsat] |
| run |
| alter @v1[dc] = 1.2 |
| print @m.xm1.msky130_fd_pr__nfet_01v8[vdsat] |
| run |
| alter @v1[dc] = 1.4 |
| print @m.xm1.msky130_fd_pr__nfet_01v8[vdsat] |
| run |
| alter @v1[dc] = 1.8 |
| print @m.xm1.msky130_fd_pr__nfet_01v8[vdsat] |
| run |
| alter @v1[dc] = 2 |
| print @m.xm1.msky130_fd_pr__nfet_01v8[vdsat] |
| run |
| |
| plot (-dc1.i(v2)) (-dc2.i(v2)) (-dc3.i(v2)) (-dc4.i(v2)) (-dc5.i(v2)) |
| |
| .endc |
| |
| .save all |
| |
| |
| ** 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 |
| .GLOBAL GND |
| ** flattened .save nodes |
| .end |