首页 | 本学科首页   官方微博 | 高级检索  
     

一种可变基准的两步比较式A/D转换器
引用本文:刘鸿铨 张晓冬. 一种可变基准的两步比较式A/D转换器[J]. 电子测量与仪器学报, 1996, 10(1): 28-33
作者姓名:刘鸿铨 张晓冬
作者单位:天津大学电子系!天津300072(刘鸿铨,金篆芷),北方交通大学!北京100044(张晓冬)
摘    要:本论文提出了一种以模拟开关来改变基准电压,以流水线工作模式运行的两步比较A/D新方案,革除了闪烁式需用大量高性能比较器和一般并-串式需要高速A/D和高增益、高压摆率放大器的不足。这种改变基准电压A/D转换器(CR ADC)具有高的采样速率,并在获得相同性能和技术指标的前提下,应用的器件数降至最少。论文对此方案的原理、工作过程作了详细介绍。给出了性能测试方法和数值。

关 键 词:两步式 可变基准 AD转换器 ADC

A Changeable Reference Two-step Analog-to-digital Converter
Liu Hongquan, Jin Zhuanzhi, Zhang Xiaedong. A Changeable Reference Two-step Analog-to-digital Converter[J]. Journal of Electronic Measurement and Instrument, 1996, 10(1): 28-33
Authors:Liu Hongquan   Jin Zhuanzhi   Zhang Xiaedong
Abstract:A novel technique of pipelined two- step analog-to-digital convertion, which is based on changing reference voltage by controlled analog switches, is introduced in the pa-per. This changeable reference analog-to-digital converter (CR ADC)has a higher sampling rate, and the number of devices on the same condition of performance and specifications is the least. While the conventional two-step convertion techniques require highspeed digital-to-analog converter (DAC) and operational amplifiers with highgain,largeslew rate the flash tech-nique requires a lot of high performance comparators. In this paper, the pinciple and operating course of the novel technique are discribed in detail. The circuit structure and parameter of a 8 -b, 10M-Sample/s CR ADC are showed. The testing methed of CR ADC is discussed, and its characteristic is given at the end of the paper.
Keywords:Analog-to-digital converter  Two-step  Changeable reference  Pipelining
本文献已被 CNKI 维普 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号