CIRCUIT EXTRACTION DEVICE, CIRCUIT EXTRACTION, SIMULATION INFORMATION GENERATION SYSTEM, SIMULATION INFORMATION GENERATION, AND NET LIST

摘要

PROBLEM TO BE SOLVED: To extract circuit information which enables accurate reproduction of the drain current and gate capacitance of an actual device in circuit simulation. ;SOLUTION: Transistor portion shape recognition means 1 recognizes the shape of a transistor portion from mask layout data 11, and generates transistor portion shape data 12. Transistor size calculation means 2 finds an equivalent transistor size such that a drain current in circuit simulation matches the drain current of an actual device, on the basis of the transistor portion shape data 12, and outputs the equivalent transistor size as transistor size data 14. Correction capacitance generation means 3 finds the difference in gate capacitance between the circuit simulation using the equivalent transistor and the actual device, and virtually generates correction capacitance having a capacitance value corresponding to the difference. Net list output means 4 reflects the transistor size data 14 and correction capacitance data 17 onto a net list 18 as circuit information used for circuit simulation.;COPYRIGHT: (C)1997,JPO