集成电路设计CAD_EDA工具实用教程作者韩雁第1章典型电路仿真工具软件1-Spectre_Verilog数模混合仿真课件.pptVIP

共27页 Spectre–Verilog混合信号仿真 浙大微电子 韩雁 hany@zju.edu.cn 几家EDA软件公司 1、Cadence 2、Synopsys（收购Avanti） 3、Mentor Graphics 4、Silvaco 5、SpringSoft SPICE仿真器 SPICE : a general-purpose analog circuit simulator developed by the University of California, Berkeley. It is used for nonlinear DC, nonlinear transient, and linear AC analysis. Hspice: a general-purpose circuit simulator from Avanti. It has an extensive set of built-in device models, including models for small geometry MOSFETs and MESFETs. The program is compatible with SPICE input formats. Cadence supports a library of primitives and a full interface for Hspice. Spectre: SPICE-alike analog simulator developed by Cadence. 高精度模拟/射频电路仿真器 1、Spectre/SpectreRF (Cadence) 2、Hspice/HspiceRF (Synopsys) 3、Ads (Agilent 主要针对RF) 4、Eldo (Mentor Graphics) 5、Saber (Synopsys) 数模混合信号仿真器 1、Spectre-Verilog (Cadence) 2、SMASH (Dolphin Integration) 3、Eldo (Mentor Graphics) 4、Harmony (Silvaco) 5、Saber (Synopsys) System in the Real World Mostly Applied Method of Mixed-Signal Design IntegratedMixed-Signal Design Mixed-Signal Simulator 的基本结构 以模拟电路仿真器为核心 在处理数模混合电路时将数字部分等效为相应的简化的模拟电路、或 者采用解析函数来表示逻辑模块的行为，然后对整个系统采用模拟电路 的方法进行模拟。优点：模拟结果精确、能处理的电路规模比较大，模 拟速度也有显著提高。缺点：比逻辑模拟器还是慢很多。 同时包含模拟和数字两个仿真核 处理速度快，能处理的电路规模极大，但需要解决模拟仿真核和数字 仿真核之间的通信问题；另外，由于数字逻辑仿真器和模拟仿真器的输 入、输出数据是不一样的，还必须在模拟仿真核和数字仿真核之间实现 模拟信号和数字信号的相互转换。 Creating Analog Block Creating Digital Block Creating a Mixed-Signal Schematic Create Config View for Simulation Set New Configuration Open the Schematic Version of Config View Set Block Partition Check Block Partition Check Partition Results Partition Requirement The design must contain at least one analog component. The design must contain at least one digital component. There must be with at least one interface net. Analog stimuli defined in the analog stimuli file cannot be used to drive digital net. Digital stimuli defined in the digital stimuli file can not be used to drive analog net. Any interface net must be identified before