| ** sch_path: /Volumes/WORK_DRIVE/caravel_automatic_gain_control/xschem/attenuator/dsa.sch |
| **.subckt dsa in gnd vdd ctr1 ctr2 ctr3 ctr4 out |
| *.ipin in |
| *.ipin gnd |
| *.ipin vdd |
| *.ipin ctr1 |
| *.ipin ctr2 |
| *.ipin ctr3 |
| *.ipin ctr4 |
| *.opin out |
| XSPDT1 in ctr1 net1 net2 gnd vdd spdt |
| R1 net2 net1 sky130_fd_pr__res_generic_po W=1 L=1 m=1 |
| XSPDT2 net2 ctr2 net3 net4 gnd vdd spdt |
| R2 net4 net3 sky130_fd_pr__res_generic_po W=1 L=1 m=1 |
| XSPDT3 net4 ctr3 net5 net6 gnd vdd spdt |
| R3 net6 net5 sky130_fd_pr__res_generic_po W=1 L=1 m=1 |
| XSPDT4 net6 ctr4 net7 out gnd vdd spdt |
| R4 out net7 sky130_fd_pr__res_generic_po W=1 L=1 m=1 |
| **.ends |
| |
| * expanding symbol: /Volumes/WORK_DRIVE/caravel_automatic_gain_control/xschem/attenuator/spdt.sym |
| *+ # of pins=6 |
| ** sym_path: /Volumes/WORK_DRIVE/caravel_automatic_gain_control/xschem/attenuator/spdt.sym |
| ** sch_path: /Volumes/WORK_DRIVE/caravel_automatic_gain_control/xschem/attenuator/spdt.sch |
| .subckt spdt in ctr out1 out2 gnd vdd |
| *.ipin in |
| *.ipin ctr |
| *.ipin gnd |
| *.ipin vdd |
| *.opin out1 |
| *.opin out2 |
| XINV1 vdd ctr gnd net1 inverter |
| XTG1 vdd ctr in gnd net1 out1 transgate |
| XTG2 vdd net1 in gnd ctr out2 transgate |
| XINV1 vdd ctr gnd net1 inverter |
| .ends |
| |
| |
| * expanding symbol: |
| *+ /Volumes/WORK_DRIVE/caravel_automatic_gain_control/xschem/attenuator/inverter.sym # of pins=4 |
| ** sym_path: /Volumes/WORK_DRIVE/caravel_automatic_gain_control/xschem/attenuator/inverter.sym |
| ** sch_path: /Volumes/WORK_DRIVE/caravel_automatic_gain_control/xschem/attenuator/inverter.sch |
| .subckt inverter vdd in gnd out |
| *.ipin in |
| *.ipin gnd |
| *.ipin vdd |
| *.opin out |
| XM1 out in gnd gnd sky130_fd_pr__nfet_01v8 L=0.15 W=4 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 |
| XM2 out in vdd vdd sky130_fd_pr__pfet_01v8 L=0.15 W=4 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 |
| .ends |
| |
| |
| * expanding symbol: |
| *+ /Volumes/WORK_DRIVE/caravel_automatic_gain_control/xschem/attenuator/transgate.sym # of pins=6 |
| ** sym_path: /Volumes/WORK_DRIVE/caravel_automatic_gain_control/xschem/attenuator/transgate.sym |
| ** sch_path: /Volumes/WORK_DRIVE/caravel_automatic_gain_control/xschem/attenuator/transgate.sch |
| .subckt transgate vdd ctr2 in gnd ctr1 out |
| *.ipin in |
| *.ipin ctr2 |
| *.ipin ctr1 |
| *.ipin vdd |
| *.ipin gnd |
| *.opin out |
| XM1 in ctr1 out gnd sky130_fd_pr__nfet_01v8 L=0.15 W=4 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 |
| XM2 in ctr2 out vdd sky130_fd_pr__pfet_01v8 L=0.15 W=4 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 |
| .ends |
| |
| .end |
