ngspice/examples/xspice/table/table-generator-b4-2d.sp

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** NMOSFET: table generator with BSIM4 2D (Vdrain, Vgate)
*NMOS
*.csparam vdstart=-0.1
*.csparam vdstop=1.8
*.csparam vdstep=0.05
*.csparam vgstart=-0.1
*.csparam vgstop=1.8
*.csparam vgstep=0.05
*PMOS
.csparam vdstart=-1.8
.csparam vdstop=0.1
.csparam vdstep=0.01
.csparam vgstart=-1.8
.csparam vgstop=0.1
.csparam vgstep=0.01
** Circuit Description **
*m1 2 1 3 0 n1 L=0.13u W=10.0u rgeoMod=1
m1 2 1 3 0 p1 L=0.13u W=10.0u rgeoMod=1
vgs 1 0 1.8
vds 2 0 1.8
vss 3 0 0
.control
** output file **
set outfile = "bsim4n-2d-1.table"
*dc vds 0 1.8 0.05 vgs 0 1.8 0.3
save i(vss)
echo *table for nmos bsim 4 > $outfile
let xcount = floor((vdstop-vdstart)/vdstep) + 1
let ycount = floor((vgstop-vgstart)/vgstep) + 1
echo *x >> $outfile
echo $&xcount >> $outfile
echo *y >> $outfile
echo $&ycount >> $outfile
let xvec = vector(xcount)
let yvec = vector(ycount)
let loopx = vdstart
let lcx=0
while lcx < xcount
let xvec[lcx] = loopx
let loopx = loopx + vdstep
let lcx = lcx + 1
end
echo *x row >> $outfile
echo $&xvec >> $outfile
let lcy=0
let loopy = vgstart
while lcy < ycount
let yvec[lcy] = loopy
let loopy = loopy + vgstep
let lcy = lcy + 1
end
echo *y column >> $outfile
echo $&yvec >> $outfile
let lcy=0
let loopy = vgstart
while lcy < ycount
alter vgs loopy
dc vds $&vdstart $&vdstop $&vdstep
* let lcx=0
* let loopx = vdstart
* dowhile loopx le vdstop
* alter vds loopx
* op
* let xvec[lcx] = i(vss)
* destroy i(vss)
* let loopx = loopx + vdstep
* let lcx = lcx + 1
* end
let xvec = i(vss)
echo $&xvec >> $outfile
destroy dc1
let loopy = loopy + vgstep
let lcy = lcy + 1
end
.endc
.include ./modelcards/modelcard.pmos
.include ./modelcards/modelcard.nmos
.end