试验设计与仿真相结合构造集成电路元模型的方法研究

Study on the Method of the Design of Experiment Integrated with Simulation for Constructing the Integrated Circuit Metamodel

集成电路的设计与优化常需要指标与参数简单、直接的模型,即电路的元模型.本文将试验设计与计算机仿真相结合构造集成电路的元模型.讨论了构造元模型中使用的4种试验设计类型与3种模型.结合低功耗集成运算放大器性能指标静态功耗元模型的构造,分析比较了不同方法的各自特点.从结果可以看出,将拉丁超立方抽样与Kriging模型相结合最适合仿真试验中的电路元模型的构造.

The design and optimization of integrated circuits （IC） often need the direct and simple relation of the parameters with specifications,called the IC metamodel. The method of design of experiment （DOE） integrated with computer simulation is used to construct the IC metamodel. The 4 experimental design types and 3 models that are applied in the construction of the metamodel are discussed. Through constructing the metamodel of static power that is the main specification of a Low - power integrated operational amplifier, it is found that the method of Latin hypercube sampling integrated with Kriging modeling can provide the most accurate approximation model based on the model error analysis.