I'm playing with a software that uses genetic/evolutionary algorithms to optimize stuff like filter designs, etc.
For LTSpice to be used as the simulation engine it requires a netlist in .net file format, question is that LTSpice's netlist export function can apparently generate several different types of file for the .net extension: "ExpressPCB", "Intergraph", "Mentor", "Multiwire", and "PADS".
The LTSPice-derived netlist for the example simulation of a two-MOSFET inverter looks like the following...which is the one I want?
*Digital inverter
.PARAM V_SUPPLY = '#V_SUPPLY#' .PARAM INP_FREQ = '#INP_FREQ#' .PARAM INP_PERIOD = '1/INP_FREQ' .PARAM NO_PERIODS = '4' .PARAM TMEAS_START = '(NO_PERIODS-1)*INP_PERIOD' .PARAM TMEAS_STOP = '(NO_PERIODS)*INP_PERIOD' .PARAM TMEAS_1 = 'TMEAS_STOP -3*INP_PERIOD/4' .PARAM TMEAS_2 = 'TMEAS_STOP -1*INP_PERIOD/4'
*** *** SUPPLY VOLTAGES *** *** VDD VDD 0 {V_SUPPLY} VSS VSS 0 0
*** *** INPUT SIGNAL *** *** VSIG IN VSS PULSE {V_SUPPLY} 0 'INP_PERIOD/2' 'INP_PERIOD/1000'
- 'INP_PERIOD/1000' 'INP_PERIOD/2' 'INP_PERIOD'
*** *** CIRCUIT *** *** MP OUT IN VDD VDD PMOS W='#WP#' L=#LMIN# MN OUT IN VSS VSS NMOS W='#WP#/3' L=#LMIN#
CL OUT VSS 10p
*** *** ANALYSIS *** *** .TRAN 'INP_PERIOD/1000' 'NO_PERIODS*INP_PERIOD'
*
*.PROBE TRAN V(IN) ; .MEASURE fails if line is not commented
*.PROBE TRAN V(OUT) ; .MEASURE fails if line is not commented
*.OPTION POST PROBE ACCURATE .LIB p.typ .LIB n.typ .END