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Proceedings Paper

Optimization of readout circuit with background suppression for dual-band quantum well infrared focal plane array photodetector
Author(s): Yi-Chuan Lu; Tai-Ping Sun; Hsiu-Li Shieh; Jian-Cheng Ye; Sen-Chuan Hung; Meng-Lieh Sheu; Shiang-Feng Tang; Wen-Jen Lin
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Paper Abstract

This paper discusses about a readout circuit for Dual-Band Quantum Well Infrared Photo-detectors (DBQWIP) interlaced focal plane array infrared image system. In this research, we will present the study of modified dark-current cancellation circuit. The sensing photo-current from 1nA to 10nA of long-wave infrared signal, mid-wave infrared photo-current is about 100pA to 1nA, the dark current is set up to 100nA. The area of unit pixel is 30×30μm2 . The 8×6 focal-plane array is designed by using TSMC 0.35μm 2P4M CMOS process. This work has 3.3V power supply and readouts data at 2.5MHz clock rate. The simulated output voltage range of LWIR and MWIR photo-current are 0.95v and 0.76v, respectively.

Paper Details

Date Published: 19 August 2010
PDF: 9 pages
Proc. SPIE 7780, Detectors and Imaging Devices: Infrared, Focal Plane, Single Photon, 778018 (19 August 2010); doi: 10.1117/12.860605
Show Author Affiliations
Yi-Chuan Lu, National Chi Nan Univ. (Taiwan)
Tai-Ping Sun, National Chi Nan Univ. (Taiwan)
Hsiu-Li Shieh, National Chi Nan Univ. (Taiwan)
Jian-Cheng Ye, National Chi Nan Univ. (Taiwan)
Sen-Chuan Hung, National Chi Nan Univ. (Taiwan)
Meng-Lieh Sheu, National Chi Nan Univ. (Taiwan)
Shiang-Feng Tang, Chung-Shan Institute of Science and Technology (Taiwan)
Wen-Jen Lin, Chung-Shan Institute of Science and Technology (Taiwan)

Published in SPIE Proceedings Vol. 7780:
Detectors and Imaging Devices: Infrared, Focal Plane, Single Photon
Eustace L. Dereniak; Randolph E. Longshore; Manijeh Razeghi; John P. Hartke; Ashok K. Sood; Paul D. LeVan, Editor(s)

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