Patent ID: 7992124

Claim:
A system for optimizing analog circuit designs, comprising: an input device configured for inputting a target output voltage of a circuit, a formula for calculating output voltage of the circuit, and electronic components composing the circuit; a data storage device configured for storing a list of a plurality of electronic components, primary electrical values of each electronic component, and specified environment relative errors of each electronic component; and a data processing device comprising: a selecting module configured for receiving input from the input device, and selecting electronic components composing the circuit from the list in the data storage device; a calculation module configured for calculating average values and standard deviations of each selected electronic component based on the primary electrical values and the relative errors of each selected electronic component, generating normal distribution samples of each electronic component based on the average values and the standard deviations, and calculating output voltages of the circuit based on each normal distribution sample and the formula for calculating output voltage of the circuit; and a performance determining module configured for calculating first and second process capability indexes based on the output voltages of the circuit, determining whether the first and second process capability indexes meet a desired process capability standard, wherein the circuit meets the desired process capability standard upon a condition that the first and second process capability indexes are equal to or greater than a process capability standard that indicates the output voltage closed to the voltage target, and wherein the circuit does not meet the desired process capability standard upon a condition that one of the indexes is less than the process capability standard.