Subcircuits in HSpice netlist?

Question

Working on Hspice first time so please bear with me. I need to write netlist for CMOS And gate. Currently, I had finished writing and testing of CMOS-Nand & inverter part.

1. CMOS Nand Gate

2. Cmos inverter

I know to to implement AND gate, I need to to connect output of NAND gate to the input of inverter.

I know that I can define NAND and Inverter as my subcircuits. But in this approach I need to wirte down their code in the subckt part which will increase the complexity of netlist.

My question is that is any other way so that I can directly use the above written netlist or write the subckts in other file and import them?

Answer 1

As mentioned in the above comment we can write subcircuits(or any other part of netlist) in a different file(.txt) to reduce the length of your .sp file.

eg, I had specified the subcircuit in a different script and included it as:

.include "/misc1/analog1/Sehwag_final/scl180_analog/netlist/puf/puf_script/script_3.txt"