An adaptive sigma-delta modulator with improved dynamic range

Chih Yuan Chen, Tai Yue Wang, Shuenn-Yuh Lee, Rong Guey Chang, Tsung Heng Tsai

研究成果: Conference contribution

摘要

This paper proposes a novel adaptive approach for sigmadelta modulators to significantly improve the dynamic range. Based on adjusting the signal power gain (SPG) of SDM, many dynamic-range (DR) curves can be obtained. A systematic approach with the proposed algorithm has been used to acquire the boundary constraints. Therefore, the wide dynamic range can be achieved without changing the original architecture and increasing the amount of hardware. A fourth order cascade of resonators with distributed feedback (CRFB) structure has been adopted to demonstrate the proposed method. This proposed method can be easily implemented by switched-capacitor circuits. The simulation results show that our work can really improve the dynamic range very well.

原文English
主出版物標題Proceedings of the Fifth IASTED International Conference on Circuits, Signals, and Systems, CSS 2007
頁面245-248
頁數4
出版狀態Published - 2007 12月 1
事件5th IASTED International Conference on Circuits, Signals, and Systems, CSS 2007 - Banff, AB, Canada
持續時間: 2007 7月 22007 7月 4

出版系列

名字Proceedings of the Fifth IASTED International Conference on Circuits, Signals, and Systems, CSS 2007

Other

Other5th IASTED International Conference on Circuits, Signals, and Systems, CSS 2007
國家/地區Canada
城市Banff, AB
期間07-07-0207-07-04

All Science Journal Classification (ASJC) codes

  • 控制與系統工程
  • 電氣與電子工程

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