12位低功耗RSD A/D转换器的改进设计与实现  

Design Improvement and Implementation of 12 bit Low Power RSD A/D Converter

作　　者：刘丰[1] 姚素英[1] 

机构地区：[1]天津大学电子信息工程学院ASIC设计中心,天津300072

出　　处：《南开大学学报（自然科学版）》2011年第6期6-10,13,共6页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金(60576025)

摘　　要：基于冗余符号数(RSD)算法,设计了可允许单端输入的12位、低功耗RSD A/D转换器.改进的电路基于90 nm CMOS工艺实现,取得了与差分输入同样的性能,具有低功耗(20 mW)、高分辨率(12 bit)、高速(1Mb/s)和面积小(0.42 mm2)等优点.测试结果表明,微分非线性(DNL)为±1 LSB,积分非线性(INL)为±1.5LSB,总的未调整误差(TUE)为-3 LSB～+1 LSB.Based on redundant signed digit(RSD) algorithm,a 12 bit,low power A/D converter is presented.This improved circuit design which is fabricated in the 90 nm CMOS technology not only allows differential-ended signal input,but also allows signal-ended signal input.The improved structure achieves the same characteristics as the differential-ended input such as low power consumption(20 mW),high resolution(12 bit),high speed(1 Mb/s)and small silicon area(0.42 mm2).The measured differential non-linearity(DNL) and integral non-linearity(INL) is ±1 LSB and ±1.5 LSB respectively,the total unadjusted error(TUE) is-3^+1 LSB.

关 键 词：RSD A/D转换器 微分非线性 积分非线性 总的未调整误差 

分 类 号：TN402[电子电信—微电子学与固体电子学]