Optimizing method of analogue integrated circuit design

Abstract

The invention relates to an optimizing method of an analogue integrated circuit design, belonging to the field of automation of integrated circuit designs. The optimizing method comprises the following steps of: inputting a circuit network table, performance design indexes and a performance test circuit; determining a target optimization value of each index item of circuit optimization based on an equation, an optimization value of each index item of the circuit optimization based on a circuit simulator after eliminating the self parasitic effect of a device, and an optimization value of eachindex project of the circuit optimization based on the circuit simulator after taking the physical connection parasitic effect of the circuit into account; executing the circuit optimization based onthe equation; executing the circuit optimization based on the circuit simulator; and carrying out the circuit optimization based on the circuit simulator. According to the optimizing method of the analogue integrated circuit design disclosed by the invention, the reliability of circuit evaluation is improved, and the optimization speed is increased, thus the zone times between the circuit design and the physical design is reduced, the design efficiency is improved and the design cycle is shortened.

Description

technical field [0001] The invention relates to the field of integrated circuit design automation, in particular to an analog integrated circuit design optimization method. Background technique [0002] The main methods of analog integrated circuit design optimization are: the designer manually modifies the device size according to the design experience, and then evaluates the circuit performance with the help of circuit simulation tools; establishes the circuit equation, and uses various optimization algorithms to solve the equation to obtain the parameter value of the device; Randomly change the device parameter value under the control of the circuit simulation tool to obtain the circuit performance value. In the optimization process, the device parameter value of the circuit is finally obtained. [0003] Because the performance of analog integrated circuits is very sensitive to parasitic effects, there are such problems in existing methods: the parasitic effects between w...

AI Technical Summary

Problems solved by technology

[0003] Because the performance of analog integrated circuits is very sensitive to parasitic effects, there are such problems in existing methods: the parasitic effects between wiring, between wiring, between wiring and devices, and between devices and devices are not considered. There is a big difference between the evaluation value and the actual circuit physical design performance value. The optimized circuit only serves as a reference, and several times of circuit design and physical design are required before the final circuit design that meets the design requirements is given. Between iterations, multiple circuit designs, multiple physical designs

Its disadvantage is low efficiency and long design cycle

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