An Output Buffer Amplifier Used in Detection Circuit of Micro Sensor

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An Output Buffer Amplifier Used in Detection Circuit of Micro Sensor

Lv Zhijun, NI Xuewen, MO Bangxian, XIANG Bin

Institute of Microelectronics, Peking University, Beijing, 100871

Received:2003-11-04 Online:2004-05-20 Published:2004-05-20

用于微传感器读出电路的输出缓冲放大器

吕志军, 倪学文, 莫邦燹, 项斌

北京大学微电子研究院，北京，100871

Abstract

Abstract: An output buffer amplifier with compact structure used in detection circuit of micro sensor is presented. The op amp contains a constant-gm rail-to-rail input stage and a simple classAB output stage and its output resistor is low. The simulation and measurement show that the output buffer amplifier could well be used in detection circuit.

Key words: Rail-to-Rail, output buffer amplifier, detection circuit

摘要： 设计了一种主要用于微传感器读出电路的输出缓冲放大器。该电路被设计为恒定跨导、Rail-to-Rail的结构，同时还具有输出共模范围大(0～5V)、输出电阻小、电路结构紧凑、非线性失真小等优点。仿真及流片测试证明了以上特点。

关键词: Rail-to-Rail, 输出缓冲放大器, 检测电路

CLC Number:

TN432

Lv Zhijun,NI Xuewen,MO Bangxian,XIANG Bin. An Output Buffer Amplifier Used in Detection Circuit of Micro Sensor[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

吕志军, 倪学文, 莫邦燹, 项斌. 用于微传感器读出电路的输出缓冲放大器[J]. 北京大学学报（自然科学版）.

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URL: https://xbna.pku.edu.cn/EN/

https://xbna.pku.edu.cn/EN/Y2004/V40/I3/437

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An Output Buffer Amplifier Used in Detection Circuit of Micro Sensor

用于微传感器读出电路的输出缓冲放大器

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