ngspice/examples/adms/bsimcmg/ac.sp

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*Sample netlist for BSIM-MG
* (exec-spice "ngspice %s" t)
*AC Response
.option abstol=1e-6 reltol=1e-6 post ingold
*.hdl "bsimcmg.va"
.include "modelcard.nmos"
.param myvdd=1.0
* --- Voltage Sources ---
vdd supply 0 dc=myvdd
vsig gate 0 dc=0.5 ac=1
vbs bulk 0 dc=0
* --- Transistor ---
m1 vout gate 0 bulk 0 nmos1 TFIN=15n L=30n NFIN=10 NRS=1 NRD=1
+ FPITCH = 4.00E-08
* --- Load ---
rl supply vout r=2k
cl supply vout c=10f
* --- AC Analysis ---
.ac dec 10 1k 1T
* For Bias Point Testing
* .dc vsig -1 1.5 0.01
.print ac vm(vout) vp(vout)
*.alter
*.param myvdd=2.0
.control
run
plot vdb(vout)
plot cph(vout)
.endc
.end