Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Design and analysis of a signal readout integrated circuit for the bolometer type infrared detect sensors

볼로미터형 적외선 센서의 신호처리회로 설계 및 특성

  • 김진수 (인제대학교 나노공학부) ;
  • 박민영 (유우일렉트로닉스) ;
  • 노호섭 (인제대학교 나노공학부) ;
  • 이승훈 (한국과학기술연구원 마이크로시스템연구센터) ;
  • 이제원 (인제대학교 나노공학부) ;
  • 문성욱 (한국과학기술연구원 마이크로시스템연구센터) ;
  • 송한정 (인제대학교 나노공학부)
  • Published : 2007.11.30
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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.

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References

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