On the design and analysis of the 4th-order leapfrog sigma-delta modulator

Kuei Chih Lin, Chuan Hsi Liu

研究成果: 書貢獻/報告類型會議貢獻

1 引文 斯高帕斯(Scopus)

摘要

In this paper, a novel methodology for designing and analyzing high performance sigma-delta leapfrog modulators for ultra-high resolution analog-to-digital (A/D) converters is presented. The less sensitive topology, the leapfrog topology, in component variations is analyzed by considering the noise transfer function (NTF). By using theoretical analysis, the loop coefficients are constrained to a small, clear and definite range called the stable region. With the output voltage limited within + 2V, an absolutely stable region (ASR) is obtained. A program that analyzes and generates the required coefficients is constructed for easily designing this topology. For a 256 over-sampling ratio (OSR) and the coefficients from ASR, the signal to noise ratio (SNR) and dynamic range (DR) are 105 dB and 100 dB, respectively. In accordance with the behavior simulation results, the system is not only stable and efficient but also suitable for high-resolution applications.

原文英語
主出版物標題2006 International Conference on Communications, Circuits and Systems, ICCCAS, Proceedings - Circuits and Systems
頁面2304-2308
頁數5
4
DOIs
出版狀態已發佈 - 2006
對外發佈Yes
事件2006 International Conference on Communications, Circuits and Systems, ICCCAS - Guilin, 中国
持續時間: 2006 六月 252006 六月 28

其他

其他2006 International Conference on Communications, Circuits and Systems, ICCCAS
國家中国
城市Guilin
期間06/6/2506/6/28

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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