毕业设计-CMOS运算放大器版图设计

摘要集成电路掩膜版图设计是实现电路制造所必不可少的设计环节，它不仅关系到集成电路的功能是否正确，而且也会极大程度地影响集成电路的性能、成本与功耗。本文依据基本CMOS集成运算放大电路的设计指标及电路特点，绘制了基本电路图，通过Spectre进行仿真分析，得出性能指标与格元器件参数之间的关系，据此设计出各元件的版图几何尺寸以及工艺参数，建立出从性能指标到版图设计的优化路径。运算放大器的版图设计，是模拟集成电路版图设计的典型，利用Spectre对设计初稿加以模拟，然后对不符合设计目标的参数加以修改，重复这一过程，最终得到优化设计方案。最后根据参数尺寸等完成了放大器的版图设计以及版图的DRC、LVS验证。关键词：集成电路，运算放大器，版图设计，仿真ABSTRACTIntegratedcircuitlayoutdesignisanessentialdesignparttorealizecircuitmaskmanufacturing,itisnotonlyrelatedtotheintegratedcircuittofunctioncorrectly,butalsocangreatlyaffecttheperformanceoftheintegratedcircuit,thecostandthepowerconsumption.BasedonthebasicCMOSintegratedoperationalamplifiercircuitcharacteristicanddesigntarget,wehaverenderedthebasiccircuitdiagram,andsimulationbySpectre,thesimulatedresultsarederivedparametersandtheirrelationshipbetweendeterminingfactors,therebydefiningalinewiththedesigntargetdomainsizeandprocessingparameters,finallywebuildedanoptimizationfromtheperformanceindextolayoutdesign.OperationalamplifierIClayoutdesign,isthedesignmodelofanalogintegratedcircuitlayout.HereweusedSpectretodesigndraftwhichshouldbesimulated,thenmodifiedwhichdonotcomplywiththedesigngoalsoftheparameters,repeattheprocess,andfinallygettheoptimizationdesignscheme.Finally,accordingtotheparameterssuchassizefinishedtheamplifierlayoutdesignandtheDRC,LVSverification.KETWORDS:Integratedcircuit,Operationalamplifier,layoutdesign,Simulation目录前言...........................................................................................................................5第1章绪论...............................................................................................................61.1课题背景......................................................................................................61.1.1研究背景...........................................................................................61.1.2研究内容............................................................................................61.2电路设计流程..............................................................................................81.3主要工作以及任务分配............................................................................101.3.1主要工作..........................................................................................101.3.2任务分配.........................................................................................10第2章版图基础知识.............................................................................................112.1版图的设计简介........................................................................................112.1.1版图的概念.....................................................................................112.1.2版图中层的意义.............................................................................112.2CMOS工艺技术.........................................................................................142.2.1概述..................................................................................................142.2.2CMOS工艺的一些主要步骤..........................................................152.2.3CMOS制造工艺的基本流程.......................................................162.3设计规则....................................................................................................182.4MOS集成运放的版图设计.......................................................................22第3章CMOS运算放大器简介.............................................................................233.1概述............................................................................................................233.2两级CMOS运算放大器的优点................................................................243.3两级运算放大器原理简单分析................................................................25第4章CMOS运算放大器的仿真.........................................................................274.1概述............................................................................................................274.2MOS运算放大器技术指标总表...............................................................284.3仿真数据.....................................................................................................304.3.1DC分析...........................................................................................304.3.2测量输入共模范围..........................................................................304.3.3测量输出电压范围.........................................................................324.3.4测量增益与相位裕度.....................................................................334.3.5电源电压抑制比测试.....................................................................354.3.6运放转换速率和建立时间分析.....................................................374.3.7CMRR的频率响应测量.................................................................39第5章算放大器版图设计.....................................................................................405.1Cadence使用说明......................................................................................405.2版图设计....................................................................................................435.3CMOS运放版图................................