Reduced complexity MASH delta-sigma modulator

被引：20
|
作者：
Ye, Zhipeng [1 ]
Kennedy, Michael Peter
机构：
[1] Natl Univ Ireland Univ Coll Cork, Dept Microelect Engn, Cork, Ireland
[2] Natl Univ Ireland Univ Coll Cork, Tyndall Natl Inst, Cork, Ireland
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2007年 / 54卷 / 08期
基金：
爱尔兰科学基金会;
关键词：
complexity; delta-sigma modulator; multi-stage noise shaping (MASH); noise shaping; sequence length;
D O I：
10.1109/TCSII.2007.896940
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A reduced complexity digital multi-stage noise shaping (MASH) delta-sigma modulator for fractional-N frequency synthesizer applications is proposed. A long word is used for the first modulator in a MASH structure; the sequence length is maximized by setting the least significant bit of the input to "1;" shorter words are used in subsequent stages. Experimental results confirm simulations.
引用
收藏
页码：725 / 729
页数：5
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