| v {xschem version=3.1.0 file_version=1.2 |
| * Copyright 2021 Stefan Frederik Schippers |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * https://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| |
| } |
| G {} |
| K {} |
| V {} |
| S {} |
| E {} |
| B 2 810 -560 1780 -70 {flags=graph,unlocked |
| y1=-6e-14 |
| y2=2.4e-13 |
| ypos1=0 |
| ypos2=2 |
| divy=5 |
| subdivy=1 |
| unity=p |
| x1=-2.1 |
| x2=4.39255 |
| |
| subdivx=1 |
| |
| |
| dataset=0 |
| unitx=1 |
| logx=0 |
| logy=0 |
| |
| color="4 7 8" |
| node="\\"Varactor cap;100e-9 g1 deriv0() /\\" |
| |
| \\"Varactor cap;100e-9 g2 deriv0() /\\" |
| |
| \\"pmos cap;100e-9 g deriv0() /\\"" |
| sweep="g1 g2 g" |
| divx=4 |
| hilight_wave=-1} |
| B 2 810 -1080 1780 -590 {flags=graph,unlocked |
| y1=-2.1 |
| y2=4.9 |
| ypos1=0 |
| ypos2=2 |
| divy=5 |
| subdivy=1 |
| unity=1 |
| x1=-1.76084e-06 |
| x2=9.47215e-06 |
| |
| subdivx=1 |
| |
| |
| dataset=0 |
| unitx=u |
| logx=0 |
| logy=0 |
| |
| color="4 7 8" |
| node="g g1 g2" |
| |
| divx=8 |
| hilight_wave=-1} |
| N 350 -820 350 -790 { lab=0} |
| N 350 -670 350 -600 { lab=G1} |
| N 350 -540 350 -450 { lab=0} |
| N 480 -600 480 -580 { lab=REF} |
| N 480 -670 480 -660 { lab=G1} |
| N 350 -670 480 -670 { lab=G1} |
| N 80 -820 80 -790 { lab=0} |
| N 80 -670 80 -620 { lab=G} |
| N 50 -490 50 -460 { lab=0} |
| N 210 -600 210 -580 { lab=REF} |
| N 210 -670 210 -660 { lab=G} |
| N 80 -670 210 -670 { lab=G} |
| N 80 -730 80 -670 { lab=G} |
| N 350 -730 350 -670 { lab=G1} |
| N 50 -580 50 -490 { lab=0} |
| N 80 -490 110 -490 { lab=0} |
| N 110 -580 110 -490 { lab=0} |
| N 80 -580 80 -490 { lab=0} |
| N 30 -420 30 -400 { lab=REF} |
| N 600 -820 600 -790 { lab=0} |
| N 600 -670 600 -600 { lab=G2} |
| N 600 -540 600 -510 { lab=#net1} |
| N 730 -600 730 -580 { lab=REF} |
| N 730 -670 730 -660 { lab=G2} |
| N 600 -670 730 -670 { lab=G2} |
| N 600 -730 600 -670 { lab=G2} |
| N 50 -490 80 -490 { lab=0} |
| C {devices/code_shown.sym} 230 -310 0 0 {name=NGSPICE |
| only_toplevel=true |
| value=" |
| .control |
| save all |
| tran 1n 9u |
| * plot g g1 g2 g3 |
| * plot '100n/deriv(g)' vs v(g) ylimit 0 0.3p |
| * plot '100n/deriv(g1)' vs v(g1) ylimit 0 0.3p |
| write test_varactor.raw |
| |
| .endc |
| " } |
| C {devices/title.sym} 160 -30 0 0 {name=l1 author="Stefan Schippers"} |
| C {devices/lab_pin.sym} 350 -630 0 0 {name=p4 lab=G1} |
| C {devices/isource.sym} 350 -760 0 0 {name=I1 value="pwl 0 0 1p 100n"} |
| C {devices/lab_pin.sym} 350 -820 0 0 {name=p1 lab=0} |
| C {devices/lab_pin.sym} 350 -450 0 0 {name=p2 lab=0} |
| C {devices/res.sym} 480 -630 0 0 {name=R1 |
| value=100G |
| footprint=1206 |
| device=resistor |
| m=1} |
| C {devices/lab_pin.sym} 480 -580 0 0 {name=p5 lab=REF} |
| C {devices/lab_pin.sym} 80 -640 0 0 {name=p6 lab=G} |
| C {devices/isource.sym} 80 -760 0 0 {name=I2 value="pwl 0 0 1p 100n"} |
| C {devices/lab_pin.sym} 80 -820 0 0 {name=p7 lab=0} |
| C {devices/lab_pin.sym} 50 -460 0 0 {name=p8 lab=0} |
| C {devices/res.sym} 210 -630 0 0 {name=R2 |
| value=100G |
| footprint=1206 |
| device=resistor |
| m=1} |
| C {devices/lab_pin.sym} 210 -580 0 0 {name=p10 lab=REF} |
| C {devices/vsource.sym} 30 -370 0 0 {name=V1 value=-2.1} |
| C {devices/lab_pin.sym} 30 -340 0 0 {name=p14 lab=0} |
| C {devices/lab_pin.sym} 30 -420 0 1 {name=p15 lab=REF} |
| C {sky130_fd_pr/cap_var_lvt.sym} 350 -570 0 0 {name=C4 model=cap_var_lvt W=5 L=5 VM=1 spiceprefix=X} |
| C {devices/lab_pin.sym} 310 -550 0 0 {name=p20 lab=0} |
| C {devices/code.sym} 70 -310 0 0 {name=TT_MODELS |
| only_toplevel=true |
| format="tcleval( @value )" |
| value=" |
| ** opencircuitdesign pdks install |
| .lib $::SKYWATER_MODELS/sky130.lib.spice tt |
| |
| " |
| spice_ignore=false} |
| C {devices/launcher.sym} 335 -395 0 0 {name=h1 |
| descr="Select arrow and |
| Ctrl-Left-Click to load/unload waveforms" |
| tclcommand=" |
| xschem raw_read $netlist_dir/[file tail [file rootname [xschem get current_name]]].raw tran |
| " |
| } |
| C {sky130_fd_pr/pfet_01v8.sym} 80 -600 1 0 {name=M2 |
| L=5 |
| W=5 |
| nf=1 |
| mult=1 |
| ad="'int((nf+1)/2) * W/nf * 0.29'" |
| pd="'2*int((nf+1)/2) * (W/nf + 0.29)'" |
| as="'int((nf+2)/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 |
| model=pfet_01v8 |
| spiceprefix=X |
| } |
| C {devices/lab_pin.sym} 600 -630 0 0 {name=p4 lab=G2} |
| C {devices/isource.sym} 600 -760 0 0 {name=I3 value="pwl 0 0 1p 100n"} |
| C {devices/lab_pin.sym} 600 -820 0 0 {name=p1 lab=0} |
| C {devices/lab_pin.sym} 600 -450 0 0 {name=p2 lab=0} |
| C {devices/res.sym} 730 -630 0 0 {name=R3 |
| value=100G |
| footprint=1206 |
| device=resistor |
| m=1} |
| C {devices/lab_pin.sym} 730 -580 0 0 {name=p5 lab=REF} |
| C {sky130_fd_pr/cap_var_lvt.sym} 600 -570 0 0 {name=C1 model=cap_var_lvt W=5 L=5 VM=1 spiceprefix=X} |
| C {devices/lab_pin.sym} 560 -550 0 0 {name=p20 lab=0} |
| C {devices/vsource.sym} 600 -480 0 0 {name=V3 value=0.5} |
| C {devices/ngspice_probe.sym} 620 -670 0 0 {name=r4} |
| C {devices/ngspice_probe.sym} 370 -670 0 0 {name=r4} |
| C {devices/ngspice_probe.sym} 100 -670 0 0 {name=r4} |
