[1]陈鸣,余晨辉,许金通,等.HgCdTe柔性中波红外探测器放大电路设计及噪声分析[J].红外技术,2019,41(7):661-665.[doi:10.11846/j.issn.1001_8891.201907011]
 CHEN Ming,YU Chenhui,XU Jintong,et al.Amplification Circuit Design and Noise Analysis for An HgCdTe Flexible Medium Wave Infrared Detector[J].Infrared Technology,2019,41(7):661-665.[doi:10.11846/j.issn.1001_8891.201907011]
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HgCdTe柔性中波红外探测器放大电路设计及噪声分析
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《红外技术》[ISSN:1001-8891/CN:CN 53-1053/TN]

卷:
41卷
期数:
2019年第7期
页码:
661-665
栏目:
出版日期:
2019-07-20

文章信息/Info

Title:
Amplification Circuit Design and Noise Analysis for An HgCdTe Flexible Medium Wave Infrared Detector

文章编号:
1001-8891(2019)07-0661-05
作者:
陈鸣12余晨辉1许金通2李向阳2
1. 南通大学 江苏省专用集成电路重点实验室;2. 中国科学院上海技术物理研究所
Author(s):
CHEN Ming12YU Chenhui1XU Jintong2LI Xiangyang2
1. Jiangsu Key Laboratory of ASIC Design, NanTong University;
2. Shanghai Institute of Technical Physics, Chinese Academy of Sciences

关键词:
柔性红外探测器微弱信号放大噪声分析弯曲测试
Keywords:
flexible infrared detectorweak signal amplificationnoise analysisbending test
分类号:
TN215
DOI:
10.11846/j.issn.1001_8891.201907011
文献标志码:
A
摘要:
设计了一种应用于HgCdTe柔性中波红外探测器的微弱信号放大电路,该电路由电桥电路、调零电路及滤波电路组成。采用平衡电桥与仪表运算放大器INA333相结合的方式搭建电桥电路;并针对探测器直流分量过大问题,设计了可调零、带增益的信号处理电路;最后通过由二阶有源滤波器组成的滤波电路将高频噪声滤除。利用运算放大器的En-In噪声模型,对放大电路进行了噪声分析,并测试了探测器在弯曲状态下的响应性能。实验结果表明,所设计的放大电路增益为86 dB,噪声均方根值低于6.1 mV;柔性探测器的曲率半径为3 mm;当探测器光敏面上的光谱辐照功率为6.75×10-7 W时,产生的光电信号约102 ?V。
Abstract:
In this study, we design a weak signal amplifier circuit for an HgCdTe flexible medium wave infrared detector, comprising a bridge amplifier circuit, zeroing circuit, and filter circuit. The bridge amplifier circuit is implemented with a bridge circuit and an instrument operational amplifier (INA333). In allusion to the problem of excessive direct current component of the detector, we developed a signal processing circuit with zeroing ability and gain adjustment. Subsequently, high-frequency noise is eliminated by a filter circuit composed of a second-order active filter. The En-In noise model of operational amplifiers is used to analyze the noise of the amplifier circuit and verify the response performance of the detector under different bending states. The experimental results demonstrate that the gain of the amplifier circuit is 86 dB, and the noise is below 6.1 mV. The detector is stable upon bending to a curvature of 3 mm. When the spectral irradiation power on the photosensitive surface of the detector is 6.75×10-7 W, the resulting photoelectric signal is approximately 102 ?V.

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备注/Memo

备注/Memo:
收稿日期:2018-12-14;修订日期:2019-04-23.
作者简介:陈鸣(1993-),男,硕士研究生,主要从事柔性红外探测器及电路系统方面的研究。E-mail:15751157138@163.com。
通信作者:余晨辉(1976-),男,副教授,博士,主要从事半导体器件与光电系统集成方面的研究。E-mail:ychyu@ntu.edu.cn。
许金通(1979-),男,研究员,博士,主要从事半导体器件及光电系统应用方面的研究。E-mail:xujintong@mail.sitp.ac.cn。
基金项目:国家自然科学基金(11574166)。

更新日期/Last Update: 2019-07-12