ngspice/examples/adms/bsimcmg/idvdnmos.sp

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*Sample netlist for BSIM-MG
* (exec-spice "ngspice %s" t)
*Id-Vd Characteristics for NMOS (T = 27 C)
.option abstol=1e-6 reltol=1e-6 post ingold
*.hdl "bsimcmg.va"
.include "modelcard.nmos.1"
* --- Voltage Sources ---
vds drain 0 dc=0
vgs gate 0 dc=1.0
vbs bulk 0 dc=0.2
* --- Transistor ---
m1 drain gate 0 bulk 0 nmos1 TFIN=15n L=40n NFIN=10 NRS=1 NRD=1 D=40n
* --- DC Analysis ---
.dc vds -0.1 1 0.01 vgs 0 1.0 0.1
*.probe dc ids=par`-i(vds)`
*.probe dc gds=deriv(ids)
*.print dc par'ids' par'gds'
.control
save @m1[gds]
save vds#branch
set temp = -55
run
let ids = -i(vds)
let xgds = deriv(ids)
plot ids
plot xgds
plot @m1[gds]
set temp = 27
run
let ids = -i(vds)
let xgds = deriv(ids)
plot ids
plot xgds
plot @m1[gds]
set temp = 100
run
let ids = -i(vds)
let xgds = deriv(ids)
plot ids
plot xgds
plot @m1[gds]
*show all
.endc
.end