Simulink环境下的SAR ADC行为建模与仿真分析  

SAR ADC behavior modeling and simulation analysis under Simulink environment

作　　者：韩笑[1] 孙玲[1] 吴秀山[2] HAN Xiao;SUN Ling;WU Xiushan(Institute of Electronic Information,Nantong University,Nantong 226019,China;College of Mechanical & Electrical Engineering,China Jiliang University,Hangzhou 310018,China)

机构地区：[1]南通大学电子信息学院,江苏南通226019 [2]中国计量学院机电工程学院,浙江杭州310018

出　　处：《现代电子技术》2017年第6期136-139,共4页Modern Electronics Technique

基　　金：浙江省"仪器科学与技术"重中之重学科开放基金项目(JL130102)

摘　　要：逐次逼近型模/数转换器由于电路复杂度较低,且功耗和速度等性能可以随着集成电路工艺的进步而不断提升,在高速、高精度ADC设计中被广泛应用。借助Matlab软件环境下的Simulink工具,该文以14位SAR ADC为例给出了电路的行为级建模方法,分析了SAR ADC采样频率、输入信号频率以及内部时钟之间的关系,充分讨论了Simulink下各模块的具体实现并给出了仿真结果。该分析为SAR ADC的晶体管极电路设计与实现提供了重要参考依据。The analog?to?digital converter(ADC)of the successive approximation register(SAR)has been widely used in the design of the high?speed and high?precision ADC because its circuit complexity is low,and its performances such as power dissipation and speed can be constantly improved with the improvement of the integrated circuit technique.By virtue of the Simulink tool under Matlab software environment,the14?bit SAR ADC is taken as an example to give the behavior modeling method of the circuit,and the relationship among the sampling frequency,input signal frequency and internal clock of SAR ADC is analyzed.Each module implemented with Simulink is discussed,and the simulation results are given.The simulation analysis provides an important reference for the design and implementation of the transistor circuit of SAR ADC.

关 键 词：模/数转换器 逐次逼近型结构 行为级建模 SIMULINK 

分 类 号：TN911-34[电子电信—通信与信息系统] TN492[电子电信—信息与通信工程]