A simplified illustration of arbitrary DAC waveform effects in continuous time delta-sigma modulators

被引：0
|
作者：
Shamsi, H [1 ]
Shoaei, O [1 ]
机构：
[1] Univ Tehran, Dept Elect & Comp Engn, IC Design Lab, Tehran, Iran
来源：
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 2005年 / E88A卷 / 12期
关键词：
Delta-Sigma modulator; continuous time; discrete time; arbitrary feedback waveform;
D O I：
10.1093/ietfec/e88-a.12.3577
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper a straight-forward approach to extract the equivalent loop-gain of a continuous time Delta-Sigma modulator with an arbitrary DAC waveform in z-domain is presented. In this approach the arbitrary DAC waveform is approximated by the infinite number of rectangular pulse shapes. Then simply using the transformations available in literatures for a rectangular DAC pulse shape and applying superposition on each rectangular pulse shape, the loop-gain of the system is derived in z-domain.
引用
收藏
页码：3577 / 3579
页数：3
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