Pspice or HSPICE coding for MOSFETs

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Aparna Anand

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Can anyone please tell what do we mean by LEVEL 1 or LEVEL 2 or LEVEL 3 and so on when we write the netlist in pspice or hspice while including mosfet models?
 

They are models of increasing complexity to better represent true MOSFET behaviours.


Keith
 
Hi everyone
Please help me with the delay measurement in HSPICE through graph as well as writing '.measure' command in the netlist.
I actually have the doubt that if we are taking two inputs A and B suppose in EXOR Gate and an output Y then how would the command be given?
Its something like-
.meas tran tdlay TRIG v(A) val=0.9 TD=0N Rise=1 TARG v(Y) val=0.9 TD=0N Fall=1
then how would the overall delay between input and output be measured?
Do we need to give two seperate commands like this...one for B and Y as well....and then taking the average....or there is some other procedure.
And i think i am not exactly clear with what delay is measured in digital circuits....is it overall delay between input and output...or something else..
Please explain...
 

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