1、 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
2、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 ABSTRACT Integrated circuit layout design is an essential design part to realize circuit mask manufacturing, it is not only related to the integrated circuit to function correctly, but also can greatly affect the performance of the integrated circuit, th
3、e cost and the power consumption.Based on the basic CMOS integrated operational amplifier circuit characteristic and design target, we have rendered the basic circuit diagram, and simulation by Spectre, the simulated results are derived parameters and their relationship between determining factors,
4、thereby defining a line with the design target domain size and processing parameters, finally we builded an optimization from the performance index to layout design .Operational amplifier IC layout design, is the design model of analog integrated circuit layout . Here we used Spectre to design draft
5、 which should be simulated, then modified which do not comply with the design goals of the parameters , repeat the process, and finally get the optimization design scheme. Finally, according to the parameters such as size finished the amplifier layout design and the DRC, LVS verification. KET WORDS:
6、 Integrated circuit, Operational amplifier, layout design, Simulation 目 录 前 言 . 5 第 1 章 绪论 . 6 1.1 课题背景 6 1.1.1 研究背景 . 6 1.1.2 研究内容 7 1.2 电路设计流程 8 1.3 主要工作以及任务分配 10 1.3.1 主要工作 10 1.3.2 任务分配 . 10 第 2 章 版图基础知识 . 11 2.1 版图的设计简介 11 2.1.1 版图的概念 . 11 2.1.2 版图中层的意义 . 11 2.2 CMOS 工艺技术. 14 2.2.1 概述 14 2.2.2 CMOS 工艺的一些主要步骤 15 2.2.3 CMOS 制造工艺的基本流程. 16 2.3 设计规则 18 2.4 MOS 集成运放的版图设计 . 22 第 3 章 CMOS 运算放大器简介. 23 3.1 概述 23 3.2 两级 CMOS 运算放大器的优点 25 3.3 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. 28 4.1 概述 28 4.2 MOS 运