| **.subckt tb_vco vctrl D0 D1 D2 D3 |
| *.ipin vctrl |
| *.ipin D0 |
| *.ipin D1 |
| *.ipin D2 |
| *.ipin D3 |
| vss vss GND {vss} |
| vdd vdd vss {vdd} |
| C1 out vss 10f m=1 |
| Vctrl vctrl vss DC {vctrl} |
| x5 vdd out out4 vss inverter_min_x2 |
| x4 vdd out4 out3 vss inverter_min_x2 |
| XM1 net2 vctrl vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 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=10 m=10 |
| XM4 net2 vdd vss vss sky130_fd_pr__nfet_01v8 L=0.6 W=1.5 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 |
| XM10 net1 vss vdd vdd sky130_fd_pr__pfet_01v8 L=0.6 W=1.5 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 |
| XM13 vbp vbp vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=1.5 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 |
| XM14 vbp vctrl vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 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 |
| XM7 net1 vbp vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=1.5 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=10 m=10 |
| C4 net7 vss 1f m=1 |
| XM15 out1 D0 net7 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| C2 net8 vss 2f m=1 |
| C3 net9 vss 4f m=1 |
| C5 net10 vss 8f m=1 |
| C6 net11 vss 1f m=1 |
| C7 net12 vss 2f m=1 |
| C8 net13 vss 4f m=1 |
| C9 net14 vss 8f m=1 |
| C10 net15 vss 1f m=1 |
| C11 net16 vss 2f m=1 |
| C12 net17 vss 4f m=1 |
| C13 net18 vss 8f m=1 |
| VD0 D0 vss DC {vd0} |
| VD1 D1 vss DC {vd1} |
| VD2 D2 vss DC {vd2} |
| VD3 D3 vss DC {vd3} |
| XM9 net5 vbp vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=1.5 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=10 m=10 |
| XM12 net6 vbp vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=1.5 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=10 m=10 |
| XM2 net3 vctrl vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 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=10 m=10 |
| XM5 net4 vctrl vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=1.5 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=10 m=10 |
| XM16 out1 D1 net8 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| XM17 out1 D2 net9 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| XM18 out1 D3 net10 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| XM19 out2 D0 net11 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| XM20 out2 D1 net12 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| XM21 out2 D2 net13 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| XM22 out2 D3 net14 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| XM23 out3 D0 net15 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| XM24 out3 D1 net16 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| XM25 out3 D2 net17 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| XM26 out3 D3 net18 vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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 |
| XM3 net5 vss vdd vdd sky130_fd_pr__pfet_01v8 L=0.6 W=1.5 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 |
| XM6 net6 vss vdd vdd sky130_fd_pr__pfet_01v8 L=0.6 W=1.5 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 |
| x1 net1 out1 out3 net2 vdd vss inverter_csvco_pex_c |
| x2 net5 out2 out1 net3 vdd vss inverter_csvco_pex_c |
| x3 net6 out3 out2 net4 vdd vss inverter_csvco_pex_c |
| **** begin user architecture code |
| |
| |
| |
| * Parameters |
| .param kp = 0.9 |
| .param vdd = kp*1.8 |
| .param vss = 0.0 |
| .param vctrl = 1.0 |
| .param vd0 = 0.0 |
| .param vd1 = 0.0 |
| .param vd2 = 0.0 |
| .param vd3 = 0.0 |
| |
| .options TEMP = 100.0 |
| |
| * Models |
| .lib ~/skywater/skywater-pdk/libraries/sky130_fd_pr_ngspice/latest/models/corners/sky130.lib SS |
| .include ~/sky130-mpw2-fulgor/inverter_csvco/sch/simulations/inverter_csvco_pex_c.spice |
| |
| * Data to save |
| .save all @M.XM7.msky130_fd_pr__pfet_01v8[id] @M.XM7.msky130_fd_pr__pfet_01v8[vds] @M.XM7.msky130_fd_pr__pfet_01v8[vdsat] @M.XM10.msky130_fd_pr__pfet_01v8[id] @M.XM10.msky130_fd_pr__pfet_01v8[vds] @M.XM10.msky130_fd_pr__pfet_01v8[vdsat] @M.XM13.msky130_fd_pr__pfet_01v8[id] @M.XM13.msky130_fd_pr__pfet_01v8[vds] @M.XM13.msky130_fd_pr__pfet_01v8[vdsat] @M.XM1.msky130_fd_pr__nfet_01v8[id] @M.XM1.msky130_fd_pr__nfet_01v8[vds] @M.XM1.msky130_fd_pr__nfet_01v8[vdsat] @M.XM4.msky130_fd_pr__nfet_01v8[id] @M.XM4.msky130_fd_pr__nfet_01v8[vds] @M.XM4.msky130_fd_pr__nfet_01v8[vdsat] @M.XM14.msky130_fd_pr__nfet_01v8[id] @M.XM14.msky130_fd_pr__pfet_01v8[vds] @M.XM14.msky130_fd_pr__pfet_01v8[vdsat] @M.X1.XM1.msky130_fd_pr__nfet_01v8[id] @M.X1.XM1.msky130_fd_pr__nfet_01v8[vds] @M.X1.XM1.msky130_fd_pr__nfet_01v8[vdsat] @M.X1.XM2.msky130_fd_pr__pfet_01v8[id] @M.X1.XM2.msky130_fd_pr__pfet_01v8[vds] @M.X1.XM2.msky130_fd_pr__pfet_01v8[vdsat] |
| |
| .ic v(out1) = vdd/2 |
| .ic v(out2) = vdd/2 |
| .ic v(out3) = vdd/2 |
| .ic v(out4) = 0.0 |
| .ic v(out) = 0.0 |
| |
| * Simulation |
| .control |
| op |
| write tb_vco.raw |
| |
| echo ----- M1 ----- |
| print @M.XM1.msky130_fd_pr__nfet_01v8[id] |
| print @M.XM1.msky130_fd_pr__nfet_01v8[vds] |
| print @M.XM1.msky130_fd_pr__nfet_01v8[vdsat] |
| |
| echo ----- M4 ----- |
| print @M.XM4.msky130_fd_pr__nfet_01v8[id] |
| print @M.XM4.msky130_fd_pr__nfet_01v8[vds] |
| print @M.XM4.msky130_fd_pr__nfet_01v8[vdsat] |
| |
| echo ----- M14 ----- |
| print @M.XM14.msky130_fd_pr__nfet_01v8[id] |
| print @M.XM14.msky130_fd_pr__nfet_01v8[vds] |
| print @M.XM14.msky130_fd_pr__nfet_01v8[vdsat] |
| |
| echo ----- M7 ----- |
| print @M.XM7.msky130_fd_pr__pfet_01v8[id] |
| print @M.XM7.msky130_fd_pr__pfet_01v8[vds] |
| print @M.XM7.msky130_fd_pr__pfet_01v8[vdsat] |
| |
| echo ----- M10 ----- |
| print @M.XM10.msky130_fd_pr__pfet_01v8[id] |
| print @M.XM10.msky130_fd_pr__pfet_01v8[vds] |
| print @M.XM10.msky130_fd_pr__pfet_01v8[vdsat] |
| |
| echo ----- M13 ----- |
| print @M.XM13.msky130_fd_pr__pfet_01v8[id] |
| print @M.XM13.msky130_fd_pr__pfet_01v8[vds] |
| print @M.XM13.msky130_fd_pr__pfet_01v8[vdsat] |
| |
| echo ----- Inverter NMOS ----- |
| print @M.X1.XM1.msky130_fd_pr__nfet_01v8[id] |
| print @M.X1.XM1.msky130_fd_pr__nfet_01v8[vds] |
| print @M.X1.XM1.msky130_fd_pr__nfet_01v8[vdsat] |
| |
| echo ----- Inverter PMOS ----- |
| print @M.X1.XM2.msky130_fd_pr__pfet_01v8[id] |
| print @M.X1.XM2.msky130_fd_pr__pfet_01v8[vds] |
| print @M.X1.XM2.msky130_fd_pr__pfet_01v8[vdsat] |
| |
| alterparam vctrl = 0.0 |
| reset |
| |
| let i = 0 |
| while i <= 1.9 |
| tran 0.01ns 50ns |
| meas tran To trig v(out) val=0.9 fall=5 targ v(out) val=0.9 fall=15 |
| let T = To/10.0 |
| let f = 1/T |
| echo . |
| echo --- VCO ---- |
| print T f |
| let i = i + 0.3 |
| alterparam vctrl = $&i |
| reset |
| end |
| *plot v(tran1.out) v(tran1.vctrl) |
| *plot v(tran2.out) v(tran2.vctrl) |
| *plot v(tran3.out) v(tran3.vctrl) |
| *plot v(tran4.out) v(tran4.vctrl) |
| *plot v(tran5.out) v(tran5.vctrl) |
| *plot v(tran6.out) v(tran6.vctrl) |
| *plot v(tran7.out) v(tran7.vctrl) |
| print tran7.f tran6.f tran5.f tran4.f tran3.f tran2.f tran1.f |
| .endc |
| |
| |
| |
| **** end user architecture code |
| **.ends |
| |
| * expanding symbol: inverter_min_x2/sch/inverter_min_x2.sym # of pins=4 |
| * sym_path: /home/dhernando/sky130-mpw2-fulgor/inverter_min_x2/sch/inverter_min_x2.sym |
| * sch_path: /home/dhernando/sky130-mpw2-fulgor/inverter_min_x2/sch/inverter_min_x2.sch |
| .subckt inverter_min_x2 vdd out in vss |
| *.iopin vss |
| *.ipin in |
| *.opin out |
| *.iopin vdd |
| XM2 out in vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=0.84 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=2 m=2 |
| XM1 out in vss vss sky130_fd_pr__nfet_01v8 L=0.15 W=0.42 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=2 m=2 |
| .ends |
| |
| .GLOBAL GND |
| ** flattened .save nodes |
| .end |
