Post layout simulation using HSPICE

[santhosh.mandugula]

Hello friends,
I have created a layout in Virtuoso, extracted RC for the same using StarRC XT. Now i want to do Post layout simulation using HSPICE. The RC extracted netlist contains R and C values for the different nets, now how can i interact these RC values with the .SP netlist i have and do simulation.

Regards,
santhosh

 

[penghan]

Take it as a subcircuit. Then include the extracted file in the .sp netlist.

 

[santhosh.mandugula]

Take it as a subcircuit. Then include the extracted file in the .sp netlist.

Hi penghan,
i have done the post layout simulation using the HSPICE by using the following command to invoke the HSPICE.

hspice -i input_netlist -x extracted_RCfile

But i observed not much variations in the output signals. Is this correct?

 

[penghan]

"not much variations "

What does the variation mean? Variation between pre-layout simulation and post-layout simulation?