Patent ID: 8516429

Claim:
A circuit optimization method used in analog circuit migration which migrates a source circuit to a target circuit, comprising: dividing the source circuit into at least one direct current path by a computer; determining an adaptation sequence of the at least one direct current path; and optimizing the at least one direct current path in the target circuit one by one in the adaptation sequence in the source circuit, traversing all devices from voltage supply terminals to ground terminals in a direction of current flow to obtain the at least one direct current path, wherein each of the at least one direct current path comprises all devices that are connected and provide a complete current path between one of the voltage supply terminals and one of the ground terminals; and in the source circuit, traversing the at least one direct current path from an input terminal to an output terminal in a direction of signal propagation to obtain a signal arrival sequence of the at least one direct current path; and determining the adaptation sequence of the at least one direct current path; and setting parameter values of devices in each of the at least one direct current path in the target circuit so that node signals of each of the at least one direct current path in the target circuit meet the design requirement when compared with the corresponding one of the at least direct current path in the source circuit.