Patent ID: 7194716

Claim:
A system for modeling a circuit represented by a first model comprising at least one input, at least one output, at least one voltage supply connection, and at least one ground connection, wherein the system comprises a computer configured to: perform a direct-current (DC) simulation of the first model; during the DC simulation, perform a DC sweep of a first stimulus on the input over a first range of DC values; during the DC simulation, perform a DC sweep of a second stimulus on the output over a second range of DC values; determine a first measured current on the voltage supply connection as a function of the first range and the second range; determine a second measured current on the ground connection as a function of the first range and the second range; and generate a second model of the circuit, the second model comprising a first current source that models a first current responsive to the first measured current and a second current source that models a second current responsive to the second measured current wherein the second model, when simulated, determines timing and power characteristics of the circuit.