10-16位旋变数字转换器中Sigma-Delta调制器设计  

Design of sigma-delta modulator 10-16 bits for resolver digital converter

作　　者：谷军 张国华[1,2] 朱晓宇[2] Gu Jun;Zhang Guohua;Zhu Xiaoyu(College of Computer Internet of Things Engineering,Jiangnan University,Wuxi 214000,China;The 58th Research Institute of China Electronics Technology,Wuxi 214000,China)

机构地区：[1]江南大学物联网工程学院,江苏无锡214000 [2]中国电子科技集团第五十八研究所,江苏无锡214000

出　　处：《电子技术应用》2022年第3期45-48,共4页Application of Electronic Technique

基　　金：国家自然科学基金项目(61704161)。

摘　　要：设计了一种应用于10-16位旋变数字转换器的Sigma-Delta调制器,调制器为二阶结构,在此基础上增加了斩波调制器电路祛除闪烁噪声,通过积分器的电荷比例改善运放的动态范围,并利用Cadence仿真软件中的Spectre工具对调制器进行VerilogA建模,并对其性能进行仿真,此外,利用仿真软件MATLAB软件对调制器进行FFT频谱分析,并比较两者之间的仿真结果,根据仿真结果显示,该调制器的设计满足10-16位转换器的使用要求。In this paper,a sigma-delta modulator for 10-16 bit resolver digital converter is designed.The modulator is a second-order structure.On this basis,a chopper modulator circuit is added to eliminate the flicker noise.The dynamic range of the operational amplifier is improved by the charge ratio of the integrator.The VerilogA model of modulator is established by using Spectre tool in Cadence simulation software,and its performance is simulated.In addition,the simulation software MATLAB is used to analyze the FFT spectrum of the modulator,and the simulation results between them are compared.According to the simulation results,the design of the modulator meets the requirements of 10-16 bit converter.

关 键 词：SIGMA-DELTA调制器 频谱分析 斩波稳定技术 

分 类 号：TN432[电子电信—微电子学与固体电子学]