Low power pixel-level ADC for a micro-bolometer(Session9A: Silicon Devices IV)
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概要
- 論文の詳細を見る
A new ROIC (readout circuit) employing current skimming for application in a micro-bolometer array is presented. The proposed circuit lowers the power consumption for a pixel-level ADC (analog to digital converter). The IR current of a micro-bolometer is proportional to resistivity changes of the micro-bolometer. Thus, the required number of counter operations for the ADC can be determined according to the micro-bolometer current variation. The counting number precisely determines how much infrared flux is absorbed. For this performance, normally a 14bit counter is used. By adopting the proposed current skimming scheme, however, the total bits for the counter can be reduced to 12bits. This is because DC offsets caused by the device non-uniformity generated from the ROIC fabrication process can be reduced by the current skimming. Therefore, only a 12bit counter is required for a pixel-level ADC. Due to the proposed mechanism, the overall power consumption in the counter will be reduced by up to 1/4 compared to the conventional structure. This low power approach is expected to see wide application in pixel level ADCs for micro-bolometers.
- 社団法人電子情報通信学会の論文
- 2008-07-02
著者
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Lee Hee
School of Plant Science, Seoul National University
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LEE Yong
School of Electrical Engineering, Seoul National University
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Lee Yong
Korea Advanced Inst. Sci. And Technol. Daejeon Kor
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Lee Hee
Dept. Of Eecs Korea Advanced Institute Of Science And Technology:national Nanofab Center
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Lee Hee
School Of Electrical Engineering And Computer Sciences Korea Advanced Institute Of Science And Techn
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Lee Hee
School Of Electrical Engineering And Computer Science Division Of Electrical Engineering Korea Advan
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Lee Hee
Dept Of Eecs Korea Advanced Institute Of Science And Technology
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YANG Woo
Electronics and Telecommunications Research Institute (ETRI)
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Hwang Chi
Department Of Electrical Engineering And Computer Science Korea Advanced Institute Of Science And Te
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Yang Woo
Electronics And Telecommunications Research Institute
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Lee Yong
Dept. Of Eecs Korea Advanced Institute Of Science And Technology
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Lee Yong
Department Of Electrical Engineering And Computer Science Korea Advanced Institute Of Science And Te
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Lee Yong
Department Of Electrical Engineering And Computer Science Kaist
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Lee Yong
Dept Of Eecs Korea Advanced Institute Of Science And Technology
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Lee Yong
School Of Earth And Environmental Sciences Seoul National University
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HA Dong-Heon
Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Te
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Ha Dong-Heon
School of Electrical Engineering and Computer Science, Division of Electrical Engineering, Korea Adv
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Hwang Chi
School of Electrical Engineering and Computer Science, Division of Electrical Engineering, Korea Adv
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Lee Hee
School Of Electrical Engineering And Computer Sciences Korea Advanced Institute Of Science And Techn
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Lee Yong
School Of Bioscience And Biotechnology And Institute Of Bioscience And Biotechnology Kangwon Nationa
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