模拟电路符号化主极点分析与应用  

Symbolic dominant pole analysis with application to analog integrated circuit design

作　　者：曾媚[1] 施国勇[1] 

机构地区：[1]上海交通大学微电子学院,上海200240

出　　处：《信息技术》2010年第3期1-5,共5页Information Technology

基　　金：上海市浦江人才基金(07pj14053);国家自然科学基金(60876089)

摘　　要：模拟电路的主极点可以用于刻画系统带宽等电路行为,是模拟电路设计者关心的一个重要设计指标。利用主极点的符号化描述可以快速改变电路参数,以达到优化电路性能的目的,这是传统数值仿真器(如Spice)难以做到的。提出了一种主极点及其敏感度的符号化计算方法,并给出了一个应用例子,实验表明这个新的算法大大提高了模拟电路设计中主极点设计与优化的自动化程度,实验结果正确可靠。In analog circuit design,the dominant pole is an important design parameter that characterizes certain circuit behavior,such as the operating bandwidth.Symbolic dominant pole analysis establishes a correlation between the circuit parameters and the circuit design goal（widening the bandwidth） with analytical expressions.Such a symbolic characterization makes it possible to achieve the design specification set forth by the circuit designer by quickly optimizing the circuit parameters;such a task is not easily possible by using a traditional numerical simulator like Spice.This paper introduces a new method for analyzing dominant pole and its sensitivity in symbolic form and presents a design case to validate this new design method.

关 键 词：符号化仿真器 模拟电路 主极点 自动优化 

分 类 号：TP331[自动化与计算机技术—计算机系统结构]