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http://dx.doi.org/10.5369/JSST.2007.16.6.475

Design and analysis of a signal readout integrated circuit for the bolometer type infrared detect sensors  

Kim, Jin-Su (School of NANO Engeering, Inje University)
Park, Min-Young (U Electronics Co.,ltd.)
Noh, Ho-Seob (School of NANO Engeering, Inje University)
Lee, Seoung-Hoon (Microsystem Research Center, Korea Institute of Science and Technology)
Lee, Je-Won (School of NANO Engeering, Inje University)
Moon, Sung-Wook (Microsystem Research Center, Korea Institute of Science and Technology)
Song, Han-Jung (School of NANO Engeering, Inje University)
Publication Information
Journal of Sensor Science and Technology / v.16, no.6, 2007 , pp. 475-483 More about this Journal
Abstract
This paper proposes a readout integrated circuit (ROIC) for $32{\times}32$ infrared focal plane array (IRFPA) detector, which consist of reference resistor, detector resistor, reset switch, integrated capacitor and operational amplifier. Proposed ROIC is designed using $0.35{\;}{\mu}m$ 2P-4M (double poly four metal) n-well CMOS process parameters. Low noise folded cascode operational amplifier which is a key element in the ROIC showed 12.8 MHz unity-gain bandwidth and open-gain 89 dB, phase margin $67^{\circ}$, SNR 82 dB. From proposed circuit, we gained output voltage variation ${\Delta}17{\};mV/^{\circ}C$ when the detector resistor varied according to the temperature.
Keywords
bolometer; ROIC; readout; infrared; OP-AMP; CMOS;
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