Patent Document ID: 20130226536
Application ID: 13406897
Patent Flag: 0

Claim One:
1. A method comprising: using a circuit recognition engine running on a computerized device to detect a number of first type devices in an integrated circuit and to detect a number of second type devices in said integrated circuit, said first type devices having an opposite polarity relative to said second type devices; simultaneously perturbing device parameter values of all said first type devices, using said computerized device; simulating said circuit and making performance measurements during said simulation to obtain a first measure of sensitivity of said performance measurements to said perturbation of device parameter values of said first type of devices, using said computerized device; simultaneously perturbing device parameter values of all said second type devices, using said computerized device; simulating said circuit and making performance measurements during said simulation to obtain a second measure of sensitivity of said performance measurements to said perturbation of device parameter values of said second type of devices, using said computerized device; and calculating overall sensitivity of said performance measurements to said perturbation of device parameter values of said circuit based on a ratio of said first measure of sensitivity to said perturbation of device parameter values to a number of first type devices, and based on a ratio of said second measure of sensitivity to said perturbation of device parameter values to a number of second type devices, using said computerized device.