Preamplifier with a second-order high-pass filtering characteristic

被引：13

作者：

Lin, YD ^{[1
]}

Tsai, CD ^{[1
]}

Huang, HH ^{[1
]}

Chiou, DC ^{[1
]}

Wu, CP ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 10764, Taiwan

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 1999年 / 46卷 / 05期

关键词：

common-mode rejection ratio; instrumentation amplifier; phase margin; preamplifier;

D O I：

10.1109/10.759062

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

A new preamplifier for suppressing low-frequency interference is presented. The proposed preamplifier, with its front end being implemented by an instrumentation amplifier, enjoys the following advantages: differential high-pass filtering, high input impedance, high common-mode rejection ratio and low passive sensitivity. This circuit can be realized with commercial operational amplifiers with enough phase margin, or fabricated in a chip for practical measurement of physiological signals.

引用

页码：609 / 612

页数：4

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