摘要
提出了一种数字前台校准技术,即电容重组技术,并将该技术与LMS数字后台校准技术相结合,提高了LMS算法的收敛速度。提出的算法使用RC混合结构的14位SAR ADC进行建模。仿真结果表明,LMS算法的收敛速度可以提高到1 k个转换周期内,同时校准后ADC的ENOB平均值从10.59 bit提高到13.79 bit。SFDR平均值从71.33 dB提高到112.93 dB,DNL最大值的平均值从1.88 LSB提高到0.97 LSB。INL最大值的平均值从8.01 LSB提高到0.88 LSB。
A digital foreground calibration technique,capacitor recombination technique,is proposed.The convergence speed of LMS algorithm was improved by combining this technique with LMS digital background calibration technique.The proposed algorithm was modeled using a 14-bit SAR ADC with RC hybrid structure.Simulation results show that the convergence speed of LMS algorithm can be improved to within 1 k conversion cycles,and the mean ENOB of the calibrated ADC is increased from 10.59 bit to 13.79 bit.The mean value of SFDR is increased from 71.33 dB to 112.93 dB,and the mean value of DNL maximum is increased from 1.88 LSB to 0.97 LSB.The mean value of INL maximum is increased from 8.01 LSB to 0.88 LSB.
作者
黄立朝
芮小军
章宇新
樊华
王煜楠
冯全源
HUANG Lichao;RUI Xiaojun;ZHANG Yuxin;FAN Hua;WANG Yunan;FENG Quanyuan(The 58th Research Institute of China Electronics Technology Group Corporation,Wuxi,Jiangsu 214063,P.R.China;Chongqing Institute of Microelectronics Industry Technology,UESTC,Chongqing 401331,P.R.China;Institute of Electronic and Information Engineering of UESTC in Guangdong,UESTC,Dongguan,Guangdong 523808,P.R.China;School of Integrated Circuit Science and Engineering(Exemplary School of Microelectronics),UESTC,Chengdu 611731,P.R.China;School of Shenzhen Institute for Advanced Studies,UESTC,Shenzhen,Guangdong 518000,P.R.China;School of Information Science and Technology,Southwest Jiaotong University,Chengdu 611756,P.R.China)
出处
《微电子学》
CAS
北大核心
2023年第4期561-567,共7页
Microelectronics
基金
国家自然科学基金面上项目(62371109)
重庆市自然科学基金面上项目(2022NSCQ-MSX5348)
广东省基础与应用基础研究基金(2023A1515010041)
四川省科技计划项目(2022YFG0164)
国家自然科学基金重大项目(62090012)
