卫星用高光谱红外焦平面读出电路设计

研制出一款高性能卫星用高光谱红外焦平面CMOS（complementary metal oxide semiconductor）读出电路ROIC（readout integrated circuit）芯片。读出电路设计包括任意行选择功能以及行增益单独调制功能，满足高光谱应用对读出电路提出的新要求。读出电路7档增益可选，适用于中波与短波碲镉汞HgCdTe（MCT）芯片；其他功能包括边积分边读出IWR（integration while reading），抗晕，串口功能控制以及全芯片电注入测试功能。读出电路采用0.35 m曝光缝合工艺，电源电压5 V，测试结果表现出良好的性能:在77 K条件下，全帧频可达450 Hz，功耗可调且典型值为300 mW。本文介绍了在读出电路设计的基本架构，提出设计中遇到的问题以及相应的解决方法，在文末给出了电路的测试结果。

Hyperspectral Infrared Focal Plane Array ROIC Design for Satellite Applications

A hyperspectral infrared focal plane complementary metal–oxide semiconductor (CMOS) readout integrated circuit (ROIC) was developed for satellite applications. The ROIC design includes row and gain selection functions for each line to meet the new requirements of hyperspectral applications in ROICs. Further, the ROIC optionally supports 7-gain features and is suited for medium and shortwave MCT chips; other features of the proposed design include integration while reading, anti-blooming, series port control, and full-chip current injection test functions. The proposed ROIC was fabricated in a 0.35 μm stitching process with a 5 V power supply; the test results show good performance of the ROIC, with a full-frame rate of 450 Hz and adjustable power dissipation having a typical value of 300 mW. This paper introduces the basic structure of the readout circuit design, shows the problems in the design and the corresponding solutions, and gives the test results of the circuit at the end of the paper.