| v {xschem version=3.1.0 file_version=1.2 } |
| G {} |
| K {} |
| V {} |
| S {} |
| E {} |
| B 2 760 -580 1560 -180 {flags=graph |
| y1=4.9e+10 |
| y2=1.3e+11 |
| ypos1=0 |
| ypos2=2 |
| divy=5 |
| subdivy=1 |
| unity=G |
| x1=0.0001 |
| x2=0.00985467 |
| divx=5 |
| subdivx=1 |
| node=ft |
| color=4 |
| dataset=0 |
| unitx=u |
| } |
| T {Transistor ft measurement} 130 -590 0 0 0.8 0.8 {} |
| N 220 -480 400 -480 { lab=D} |
| N 30 -480 30 -360 { lab=D} |
| N 30 -300 30 -110 { lab=GND} |
| N 400 -320 430 -320 { lab=GND} |
| N 430 -320 430 -270 { lab=GND} |
| N 400 -270 430 -270 { lab=GND} |
| N 220 -150 220 -110 { lab=GND} |
| N 400 -290 400 -110 { lab=GND} |
| N 190 -320 220 -320 { lab=GND} |
| N 190 -320 190 -270 { lab=GND} |
| N 190 -270 220 -270 { lab=GND} |
| N 220 -290 220 -210 { lab=GND} |
| N 220 -400 220 -350 { lab=G} |
| N 400 -480 400 -350 { lab=D} |
| N 260 -320 360 -320 { lab=G} |
| N 220 -370 290 -370 { lab=G} |
| N 290 -370 290 -320 { lab=G} |
| N 30 -110 400 -110 { lab=GND} |
| N 220 -480 220 -460 { lab=D} |
| N 220 -210 220 -150 { lab=GND} |
| N 30 -480 220 -480 { lab=D} |
| C {sky130_fd_pr/nfet_01v8_lvt.sym} 380 -320 0 0 {name=M1 |
| L=0.15 |
| W=10 |
| 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=nfet_01v8_lvt |
| spiceprefix=X |
| } |
| C {devices/vsource.sym} 30 -330 0 0 {name=VDS value=1.5} |
| C {devices/isource.sym} 220 -430 0 0 {name=Idref value=1} |
| C {devices/gnd.sym} 400 -110 0 0 {name=l1 lab=GND} |
| C {devices/code.sym} 530 -350 0 0 {name=SIMULATION |
| only_toplevel=false |
| value=" |
| |
| * .options filetype=ascii |
| .save all |
| |
| .op |
| .control |
| *dc Idref 0.1e-3 10e-3 0.1e-3 |
| |
| let n_idx = 101 |
| |
| let start_iref = 0.1e-3 |
| let stop_iref = 10e-3 |
| let delta_iref = (stop_iref - start_iref) / n_idx |
| let iref_act = start_iref |
| |
| let vgs = unitvec(n_idx) |
| let gms = unitvec(n_idx) |
| let ids = unitvec(n_idx) |
| |
| let cgss = unitvec(n_idx) |
| let cgds = unitvec(n_idx) |
| |
| let idxs = 0 |
| let idx = idxs |
| |
| *loop |
| while iref_act le stop_iref |
| alter idref iref_act |
| run |
| *print @m.xm2.msky130_fd_pr__nfet_01v8_lvt[gm] |
| |
| let gms[idx] = @m.xm2.msky130_fd_pr__nfet_01v8_lvt[gm] |
| let ids[idx] = @m.xm2.msky130_fd_pr__nfet_01v8_lvt[id] |
| |
| let cgss[idx] = @m.xm2.msky130_fd_pr__nfet_01v8_lvt[cgs] |
| let cgds[idx] = @m.xm2.msky130_fd_pr__nfet_01v8_lvt[cgd] |
| let vgs[idx] = v(G) |
| |
| let iref_act = iref_act + delta_iref |
| let idxs = idx + 1 |
| let idx = idxs |
| end |
| |
| let ft = -gms/(2*pi*(cgss+cgds)) |
| settype voltage vgs |
| settype current ids |
| setscale ids |
| plot gms vs ids |
| plot xlog ft vs ids |
| plot xlog vgs vs ids |
| write tb_ft_test.raw |
| .endc |
| .end |
| "} |
| C {devices/lab_wire.sym} 90 -480 0 0 {name=l2 sig_type=std_logic lab=D} |
| C {sky130_fd_pr/nfet_01v8_lvt.sym} 240 -320 0 1 {name=M2 |
| L=0.15 |
| W=10 |
| 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=nfet_01v8_lvt |
| spiceprefix=X |
| } |
| C {devices/lab_wire.sym} 320 -320 0 0 {name=l3 sig_type=std_logic lab=G} |
| C {devices/title.sym} 160 -30 0 0 {name=l4 author="Rafael Marinho"} |
| C {devices/code.sym} 530 -180 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} 765 -135 0 0 {name=h4 |
| descr="Select arrow and |
| Ctrl-Left-Click to load/unload |
| simulation .raw file" |
| tclcommand=" |
| xschem raw_read $netlist_dir/[file tail [file rootname [xschem get current_name]]].raw |
| " |
| } |
