[SOLVED] Subcircuit Capacitance measurement in HSPICE.

[saqib.shah06]

Hi,
I am simulating an amplifier in HSPICE. I am using the amplifier in the form of a subcircuit. I need to find out the capacitance of an internal node in this circuit - is there a command in HSPICE to do this? I am familiar with the .print CAP command, but how do I use this for a subcircuit?

 

[AmrZohny]

Add one line of ".op" in your hspice input file. And you can get all initial voltages in your output file.

use the following statement

.op
.opt post probe
.probe v(xi0.net1) .....

if you can access the internal node voltages...try

in "hspice_sim_analysis.pdf" (hspice 2004 user manual)
page 309 (7-25)

Nodal Capacitance Output
SYNTAX:
CAP(nxxx)
For nodal capacitance output, HSPICE prints or plots the
capacitance of the specified node nxxxx.
EXAMPLE:
.print ac CAP(xi0.net1) CAP(xi0.net2)

hope it helps

cheers

 

[saqib.shah06]

Thank you - worked perfectly.