288×4长波红外探测器关键驱动电路的设计  

Design of key driving circuits for 288×4 long-wavelengh infrared detector

作　　者：陈晓东[1] 何锡君[1] 

机构地区：[1]南京电子技术研究所,江苏南京210039

出　　处：《激光与红外》2011年第5期561-564,共4页Laser & Infrared

摘　　要：针对制冷型288×4长波焦平面红外探测器组件PLUTON LW K508的特点,设计了一个驱动模块,为探测器组件提供了时序与控制信号、模拟与数字电源、参考电平、制冷模式控制信号等。重点介绍了上电控制电路、GPOL电压产生电路、制冷模式控制电路等关键电路的设计原理与结构。实验结果表明,采集到的红外图像具有噪声低、精度高、稳定性强等特点。当探测器在293 K和353 K之间的黑体照射下,并且积分时间为19μs时,整个红外图像采集系统采集到的图像噪声电压均值保持在0.4 mV以下。According to the characteristic of 288×4 LWIRCMOS Integrated Detector Dewar Cooler Assembly named PLUTON LW K508,a drive module is designed to provide the Detector Assembly with clock,control signals,analog power,digital power,reference level and control signals of refrigeration mode,etc.The design principle and configuration of three key circuits：power on circuit,bias voltage GPOL generation circuit and refrigeration mode control circuit are described detailedly.Experimental results show that the collected infrared images have the characteristic of low noise,high precision,and high stability.The average noise voltage of the images acquired by the whole infrared image collecting system is below 0.4 mV when the detector is radiated by the 293 K to 353 K blackbody with an integral time of 19 μs.

关 键 词：红外探测器 驱动电路 噪声电压 滞回比较器 

分 类 号：TN215[电子电信—物理电子学]