红外焦平面信号读出及处理技术

摘要

Readout integrated circuit is an important component in infrared detector dewar cooler assembly(IDDCA), and its performance has a great significance on IDDCA and the overall infrared imaging system.According to the char-acteristics and application requirements of different infrared detectors,ROIC should adopt the corresponding signal readout and processing technology to improve assembly performance.Several signal readout technologies were intro-duced,such as source follower input stage,direct injection input stage,capacitive feedback amplifier input stage, meanwhile,the low noise signal processing technology of correlated double sampling and pixel level digitalization tech-nology were also introduced.%读出电路是红外探测器组件的重要组成部分,其性能对组件乃至整个成像系统的性能影响重大.本文旨在说明根据不同类型的红外探测器及应用需求特点,读出电路应采取相应的信号读出处理技术,以提高组件性能.文章介绍了适用于不同探测器及应用需求的源随输入级、直接注入输入级、容性反馈放大器输入级信号读出技术,相关双采样低噪声处理技术以及像素级数字化技术.