Circuit optimization method and apparatus for analog circuit migration
First Claim
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1. 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.
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Abstract
A circuit optimization apparatus and a circuit optimization method used in analog circuit migration which migrates a source circuit to a target circuit are disclosed. The circuit optimization method comprises: dividing the source circuit into at least one direct current path; 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. The circuit optimization apparatus and the circuit optimization method improve an optimization efficiency of the analog circuit migration.
7 Citations
12 Claims
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1. A circuit optimization method used in analog circuit migration which migrates a source circuit to a target circuit, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A circuit optimization apparatus used in analog circuit migration which migrates a source circuit to a target circuit, comprising:
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a circuit simulation unit configured to perform source circuit simulation and target circuit simulation; a circuit simulation result analyzing unit coupled to the circuit simulation unit and configured to calculate node signals of the source circuit and the target circuit in accordance with results of the source circuit simulation and the target circuit simulation; a circuit connection analyzing unit coupled to the circuit simulation result analyzing unit and configured to analyzing circuit connections of the source circuit to determine direct current paths in the source circuit; a circuit adaptation sequence determining unit coupled to the circuit connection analyzing unit and configured to analyze a signal arrival sequence of the direct current paths in the source circuit and obtain an adaptation sequence of the direct current paths in the source circuit in accordance with the signal arrival sequence; a parameter value setting unit coupled to the circuit simulation unit and an optimization control unit, and configured to setting parameter values of the devices in one of the direct current path in the target circuit; a signal comparison unit coupled to the circuit simulation result analyzing unit, and configured to compare node signals of the one of the direct current paths in the target circuit and the corresponding one of the direct current paths in the source circuit; and the optimization control unit coupled to the signal comparison unit and the parameter value setting unit, and configured to provide a control signal to the parameter value setting unit in accordance with a comparison result of the signal comparison unit to optimize the direct current paths in the target circuit one by one in the adaptation sequence. - View Dependent Claims (11, 12)
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Specification