1280×1024 DI型多功能红外焦平面阵列读出电路设计  

Design of 1280×1024 DI Multi-Functional IRFPA Readout Circuit

作　　者：裘天慧 夏晓娟[2] 刘琦[1] 关钰 Qiu Tianhui;Xia Xiaojuan;Liu Qi;Guan Yu(Southeast University,Nanjing 210096,China;Nanjing University of Posts and Telecommunications,Nanjing 210023,China;Infrared Detector Technology Key Laboratory of Aeronautical Science and Technology,Luoyang 471009,China)

机构地区：[1]东南大学,南京210096 [2]南京邮电大学,南京210023 [3]红外探测器技术航空科技重点实验室,河南洛阳471009

出　　处：《航空兵器》2021年第5期114-118,共5页Aero Weaponry

基　　金：航空科学基金项目(20182412009)。

摘　　要：为适应第三代红外探测器的需求,提出一种大阵列低功耗的1280×1024红外读出电路设计方案。在分析各模块实现的基础上,重点设计了超大阵列像素单元的低功耗读出实现和阵列工作时序,提高了输出缓冲器对外部系统的驱动能力,并实现了边积分边读出以及多路输出功能。在温度80 K、时钟频率5 MHz的工作条件下,对像素阵列窗口进行了四路、八路读出仿真以及线性度仿真,输出帧频可以达到60 Hz,输出摆幅为1.6~4.8 V,最大功耗小于450 mW,线性度为97.76%。To meet the needs of the third generation infrared detector,a design of 1280×1024 pixel infrared readout circuit with large array and low power consumption is proposed.Based on the analysis of each module,low-power readout and working sequence of super array pixel unit are mainly designed,which improves the driving ability of the output buffer to the external system,and the integration while reading and multi-channel output functions are realized.Under the working conditions of temperature of 80 K and clock frequency of 5 MHz,4-way and 8-way readout and linearity simulations of pixel array window are performed.The output frame rate could reach 60 Hz,the output voltage swing is 1.6~4.8 V,the maximum power consumption is less than 450 mW,and the linearity is 97.76%.

关 键 词：红外焦平面 读出电路 DI结构 互补并联结构 红外探测器 

分 类 号：TJ765.3[兵器科学与技术—武器系统与运用工程]