An Integrated Power Management Unit for a Battery-Operated Wireless Endoscopic System

作     者：陈新凯 姜汉钧 王志华 Chen Xinkai;Jiang Hanjun;Wang Zhihua

作者机构：清华大学电子工程系北京100084 清华大学微电子研究所北京100084 

基　　金：the National Natural Science Foundation of China(No.60475018) 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2008年第29卷第11期

页      码：2245-2251页

摘      要：This paper presents an integrated power management unit （PMU） for a battery-operated wireless endoscopic system. This PMU is integrated with a baseband chip in standard 0.18μm CMOS technology,promising low cost, ease in PCB design, and a minimum in system size. The optimized power supply architecture is derived from comparison. Circuits of sub blocks are presented in detail. As a result, only five small off-chip capacitances are required by PMU with an overall quiet current consumption of less than 100μA. Moreover,a digital calibration method is adopted to alleviate the effect of process variation. The achieved performance is also demonstrated with corresponding measurement results.

主 题 词：power management unit LDO charge pump oscillator integration wireless endoscopic system 

学科分类：080903[080903] 0809[工学-计算机类] 08[工学] 

核心收录：

D　O　I：10.3321/j.issn:0253-4177.2008.11.030

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