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How to edit model file parameters from the spice file before running a simulation

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rahdirs

rahdirs

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Hi,


I have a spice file like this:

Code: 
**Test inverter 
.TEMP 110 
**Use high temperature to simulate worst case delay and leakage power 
.OPTION 
+            ARTIST=2 
+            INGOLD=2 
+            MEASOUT=1 
+            PARHIER=LOCAL 
+            PSF=2 
+            POST 
.inc '/home/**/NMOS_VTL.inc'  ** I've hid the directory path while posting 
.inc '/home/**/PMOS_VTL.inc' 
.include inverter.sp 
v1 vdd! 0 1.1v 
v2 vin 0 PULSE(0 1.1V 1ns 0.02ns 0.02ns 1ns 3ns) 

.op 
.tran 10p 20ns 

.MEASURE TRAN tdlay TRIG Vout VAL = 0.5 TD = 10n RISE = 2
+ TARG Vin VAL = 0.5  FALL = 2

.end

Is it possible to edit parameters that we are importing from 'NMOS_VTL.inc' & 'PMOS_VTL.inc' without manually doing it ? For example, I'll be importing Vth0 = 0.43.. from nmos model file & Vth0 = -0.47... from pmos model. Can i change those values from the spice file ?

Regards,
rahdirs
 

Model parameters can be overridden in the model instantiation or changed in a parameter sweep.. Means you have to edit either the model or the instance or perform a .STEP command.
 

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