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박민영(Minyoung Park),김근태(Kuntae Kim),이승훈(Seunghun Lee),송한정(Hanjung Song),문성욱(Sung Moon) 대한전자공학회 2006 대한전자공학회 학술대회 Vol.2006 No.11
This paper proposes a CMOS Readout Integrated Circuit (ROIC) for Infrared Focal Plane Array (IRFPA) detector, which is key component in uncooled thermal imaging system. The ROIC was designed using 0.35㎛ design rule 2P4M (double poly four metal) N-well P-sub process, 32 by 32 two dimension array and pixel size 50㎛ by 50㎛. Our proposed ROIC is mixed mode signal circuit which has both of the analog and digital signal part in a same chip. As a digital part circuit, readout circuit needs pixel selecting signal generator, and in a analog part, signal amplification is performed with the lowest noise. Input generation clock block was designed to generator ROIC inside signal and X-Y decoder was designed for the pixel selecting generator. In additions, folded cascade differential amplifier was designed for current flow to bolometer signal amplification and integration and low noise.