The error analysis of Sigma Delta modulator

被引：0
|
作者：
Cao, LJ [1 ]
Yang, ZM [1 ]
机构：
[1] Hefei Univ Technol, Sch Insrument, Hefei, Peoples R China
来源：
International Symposium on Communications and Information Technologies 2005, Vols 1 and 2, Proceedings | 2005年
关键词：
Sigma Delta modulator; error; periodic character;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
There are some special characteristics such as high precision, low cost and easy finish the system design for Sigma Delta A/D converter. If omitted the complicated digital Decimator, the precision and rate of A/D conversion will depend on the way of system design. In this paper, the error of first order Sigma Delta modulator was analyzed with dc input. Based on the periodic character of the output I-bit data stream when input is a rational, the conclusion were given that the error will decreasing along with the increase of account pulse and the least error will occur when average calculation in a period. This is a theory warranty for engineers to design a fast, high precision A/D converter application with Sigma Delta modulator.
引用
收藏
页码：246 / 249
页数：4
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