A LOW-VOLTAGE SWITCHED-CURRENT DELTA-SIGMA MODULATOR

被引：12
|
作者：
TAN, NX [1 ]
ERIKSSON, S [1 ]
机构：
[1] LINKOPING UNIV,DEPT ELECT ENGN,S-58183 LINKOPING,SWEDEN
来源：
IEEE JOURNAL OF SOLID-STATE CIRCUITS | 1995年 / 30卷 / 05期
关键词：
D O I：
10.1109/4.384176
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：
This paper presents the design of a fully differential switched-current delta-sigma modulator using a single 3.3-V power-supply voltage. At system level, we tailor the modulator structure considering the similarity and difference of switched-capacitor and switched-current realizations. At circuit level, we propose a new switched-current memory cell and integrator with improved common mode feedback, without which low power-supply-voltage operation would not be possible, The whole modulator was implemented in a 0.8-mu m double-metal digital CMOS process. It occupies an active area of 0.53 x 0.48 mm(2) and consumes a current of 0.6 mA from a single 3.3-V power supply, The measured dynamic range is over 10 b.
引用
收藏
页码：599 / 603
页数：5
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