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author:

魏榕山 (魏榕山.) [1] (Scholars:魏榕山) | 黄海舟 (黄海舟.) [2]

Indexed by:

CQVIP

Abstract:

基于斩波技术和开关电容结构,研究并设计一款用于MEMS压力传感器的低噪声、高精度读出芯片.在经典三运放结构的基础上增加了斩波开关,并在传统自调零结构上进行改进,引入一种开关电容滤波器,实现对失调电压的消除.采用SMIC 0.18 μm CMOS工艺,对所设计的电路进行仿真验证.仿真结果表明,在不同增益情况下,输出端的增益误差均小于0.1%;在0 ~650Hz范围内,等效输入噪声小于600nV,满足MEMS压力传感器输出信号的分辨率的要求.

Keyword:

压力传感器 失调消除 斩波技术 自调零 读出电路

Community:

  • [ 1 ] [魏榕山]福州大学
  • [ 2 ] [黄海舟]福州大学

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Source :

中国集成电路

ISSN: 1681-5289

CN: 11-5209/TN

Year: 2017

Issue: 8

Volume: 26

Page: 42-45,48

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count: -1

Chinese Cited Count:

30 Days PV: 1

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