一种用于非制冷红外焦平面阵列的低噪声高均匀性读出电路
投稿时间:2017-08-07  修订日期:2018-02-09  点此下载全文
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作者单位E-mail
周同 南京理工大学 机械工程学院 zhoutong@njust.edu.cn 
赵健 清华大学  
何勇 南京理工大学  
姜波 南京理工大学  
苏岩 南京理工大学 suyan@njust.edu.cn 
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:本文提出了一种高均匀性低噪声的读出电路,该电路通过抑制非制冷红外焦平面阵列固定模式噪声,从而可实现高质量的红外图像。该电路前端采用了行共享的增益可控NMOS管抑制像元固定模式噪声,同时采用了新型的相关双采样电路抑制列固定模式噪声。在仿真基础上,采用了AMS 0.35 μm CMOS工艺完成了16 × 16像元芯片的制备。对芯片的大量测试结果表明本文提出的读出电路可以有效的降低非制冷红外焦平面阵列的固定模式噪声,同时具有高均匀性的特点,适用于高性能非制冷红外探测器。
中文关键词:读出电路  固定模式噪声  高均匀性  相关双采样
 
A Low Noise and High Uniformity Readout Integrated Circuit for IFPA Applications
Abstract:This paper proposed a readout integrated circuit (ROIC) with high uniformity and low-noise, by mitigating the fixed patter noise (FPN) of Infrared focal plane arrays (IFPA) to acquire high-quality infrared image. The row shared gain-controlling NMOS transistors are adopted in front-end circuit to reduce the pixel FPN. Furthermore, a novel correlated double sampling (CDS) structure is proposed to reduce the column FPN. A 16 × 16 experimental chip has been manufactured adopting AMS 0.35 μm CMOS process, based on the simulation results. Extensive experiments have been implemented to verify the function and performance of the proposed readout circuit, the test results demonstrate the ROIC with the inherent advantages of low FPN and high uniformity, which make it suitable for the application of high performance IFPA.
keywords:ROIC  Fixed patter noise  High uniformity  Correlated Double Sampling
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