| v {xschem version=3.1.0 file_version=1.2 |
| } |
| G {} |
| K {} |
| V {} |
| S {} |
| E {} |
| L 4 250 -790 460 -790 {} |
| L 4 460 -800 460 -790 {} |
| L 4 460 -800 510 -790 {} |
| L 4 460 -780 510 -790 {} |
| L 4 460 -790 460 -780 {} |
| B 2 520 -610 1030 -310 {flags=graph |
| y1 = -3.48637e-06 |
| |
| divy = 5 |
| subdivy=1 |
| x1=0.1501 |
| x2=1 |
| divx=4 |
| subdivx=1 |
| |
| unity=1 |
| |
| logy=0 |
| hilight_wave=0 |
| rainbow=1 |
| dataset=-1 |
| color=4 |
| node="\\"Id;i(curr)\\"" |
| y2=0.000472246 |
| digital=0 |
| ypos1=-8.09765e-05 |
| ypos2=0.000250171} |
| B 2 520 -870 1030 -620 {flags=graph |
| y1 = -0.000873999 |
| |
| divy = 5 |
| subdivy=1 |
| x1=0.1501 |
| x2=1 |
| divx=4 |
| subdivx=1 |
| |
| unity=1 |
| |
| logy=0 |
| hilight_wave=0 |
| rainbow=1 |
| dataset=-1 |
| color=4 |
| node="\\"d(Id)/dL;i(curr) deriv()\\"" |
| y2=5.16851e-05 |
| digital=0 |
| ypos1=-8.09765e-05 |
| ypos2=0.000250171} |
| T {Id vs Length for |
| nfet_01v8, W=1, |
| L=X-axis, |
| Vds = Vgs = sweep |
| from 0.8 to 1.8 step 0.2 |
| Vb = Vs = 0} 70 -540 0 0 0.5 0.5 {} |
| T {Vgs,Vds=0.8} 1040 -370 0 0 0.4 0.4 {layer=4} |
| T {Vgs,Vds=1.0} 1040 -400 0 0 0.4 0.4 {layer=5} |
| T {Vgs,Vds=1.2} 1040 -430 0 0 0.4 0.4 {layer=6} |
| T {Vgs,Vds=1.4} 1040 -470 0 0 0.4 0.4 {layer=7} |
| T {Vgs,Vds=1.6} 1040 -520 0 0 0.4 0.4 {layer=8} |
| T {Vgs,Vds=1.8} 1040 -570 0 0 0.4 0.4 {layer=9} |
| T {Binning (different models for W/L classes) |
| produce discontinuities} 10 -770 0 0 0.4 0.4 {} |
| N 730 -140 750 -140 {lab=B} |
| N 670 -140 690 -140 {lab=G} |
| N 730 -190 730 -170 {lab=#net1} |
| N 730 -110 730 -90 {lab=S} |
| N 730 -270 730 -250 { lab=D} |
| C {devices/lab_pin.sym} 730 -90 0 1 {name=p16 lab=S} |
| C {devices/lab_pin.sym} 750 -140 0 1 {name=p21 lab=B} |
| C {devices/ammeter.sym} 730 -220 0 0 {name=Vd2 current=5.0094e-04} |
| C {devices/lab_pin.sym} 670 -140 0 0 {name=p6 lab=G} |
| C {devices/code.sym} 20 -190 0 0 {name=NGSPICE |
| only_toplevel=true |
| value=" |
| * this option enables mos model bin |
| * selection based on W/NF instead of W |
| .option wnflag = 1 |
| .option savecurrents |
| .param VGATE = 1 |
| .param VDRAIN = 1 |
| .param WIDTH = 1 |
| .param LENGTH=0.15 |
| vd d 0 \{VGATE\} |
| vg g 0 \{VGATE\} |
| vs s 0 0 |
| vb b 0 0 |
| .control |
| save i(vd2) |
| ** here we are in the const plot, so declare all vectors. |
| let npoints = 100 |
| let startl = 0.15 |
| let endl = 1 |
| let stepl = (endl - startl) / npoints |
| let startv = 0.8 |
| let endv = 1.8 |
| let stepv = 0.2 |
| let v = startv |
| let i = 0 |
| let j = startl |
| set curplot = new |
| set myplot = $curplot |
| let curr = vector(npoints + 1) |
| let len = vector(npoints + 1) |
| while v < endv + stepv / 2 |
| let i = 0 |
| let j = startl |
| while j <= endl + stepl / 2 |
| alterparam LENGTH = $&j |
| alterparam VGATE = $&v |
| reset |
| op |
| set idx = $&i |
| let \{$myplot\}.curr[\{$&i\}] = i(vd2) |
| let \{$myplot\}.len[\{$&i\}] = j |
| let j = j + stepl |
| let i = i + 1 |
| end |
| setplot $myplot |
| setscale len |
| deftype v length L |
| settype length len |
| settype current curr |
| setcs curplottitle = \\"MOS current vs length sweep\\" |
| setcs curplotname = \\"DC transfer characteristic\\" |
| write test_mos_binning.raw |
| set appendwrite |
| let v = v + stepv |
| end |
| .endc |
| |
| " } |
| C {sky130_fd_pr/nfet_01v8.sym} 710 -140 0 0 {name=M2 |
| L=\{LENGTH\} |
| W=\{WIDTH\} |
| mult=1 nf=1 |
| model=nfet_01v8 |
| spiceprefix=X} |
| C {devices/launcher.sym} 885 -245 0 0 {name=h4 |
| descr="Reload waves" |
| tclcommand=" |
| xschem raw_read $netlist_dir/[file tail [file rootname [xschem get current_name]]].raw dc |
| " |
| } |
| C {devices/lab_pin.sym} 730 -270 0 0 {name=p1 lab=D} |
| C {devices/title.sym} 160 -30 0 0 {name=l1 author="Stefan Schippers"} |
| C {sky130_fd_pr/corner.sym} 1050 -190 0 0 {name=CORNER only_toplevel=true corner=tt} |
