The output signals of two-color (MWIR and SWIR) infrared detectors with simultaneous mode are MW current signal and MW-SW current signal.A novel readout circuit with voltage signal subtraction structure is presented in this paper.By using this structure,SW voltage signal is separated from MW-SW voltage signal after SW current signal and MW-SW current signal integrated in simultaneous mode.A detailed description of a 32×32 circuit structure and simulation is given in this paper.The circuit shows good performance in simulation.The input stage is simple structured and occupies small area,and this ROIC is suitable for large-format IR detectors.
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刘非,丁瑞军,林加木,沈晓.32×32双色红外探测器同步读出电路设计[J].激光与红外,2009,39(2):178~182 LIU Fei, DING Rui-jun, LIN Jia-mu, SHEN Xiao.32×32 Two Color IR Detector Readout Circuit With Simultaneous Integration Mode[J]. LASER & INFRARED,2009,39(2):178~182