標題: Resonator-based multi-stage Sigma Delta modulator for wideband applications with improved dynamic range
作者: Chang, TH
Dung, LR
電控工程研究所
Institute of Electrical and Control Engineering
公開日期: 27-May-2004
摘要: A new design methodology for wideband, multi-stage, multi-bit YEA modulators (SigmaDeltaMs) with improved dynamic range, is presented. The key to improving dynamic range is to have the first stage oscillated, then the coarse quantisation noise vanishes and hence circuit nonlinearities do not cause a leakage quantisation noise problem. Based on the proposed methodology, a fourth-order four-bit SigmaDeltaM can achieve the dynamic range of 80 dB at the OSR of 8 without using additional calibration techniques.
URI: http://dx.doi.org/10.1049/el:20040450
http://hdl.handle.net/11536/26759
ISSN: 0013-5194
DOI: 10.1049/el:20040450
期刊: ELECTRONICS LETTERS
Volume: 40
Issue: 11
起始頁: 652
結束頁: 654
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