NDLI: A novel method to realize automatic gain adjust for infrared readout integrated circuit

Content Provider	IEEE Xplore Digital Library
Author	Liu Dan Zhang Yacong Chen Zhongjian Zhao Baoying Ji Lijiu
Copyright Year	2005
Description	Author affiliation: Inst. of Microelectron., Peking Univ., Beijing, China (Liu Dan; Zhang Yacong; Chen Zhongjian; Zhao Baoying; Ji Lijiu)
Abstract	A novel method to adjust gain in CMOS infrared (IR) readout integrated circuit (ROIC) which is suitable for the application of small pixel size has been proposed in this paper. Current mirror is inserted in the pixel to adjust gain. Two comparators have been added outside of the pixel and provide the decision to select different gains. Adjustable gain makes the design of following signal process circuit easier and allows long integration time to increase SNR. With this method of automatic gain adjust, ROIC can deal with the current that varies from 40nA to 300nA, with the integration capacitor of 2pF and the integration time of 40/spl mu/s. An experimental 4/spl times/4-pixel ROIC has been designed and it will be fabricated with 0.5/spl mu/m DPDM n-well CMOS process.
Starting Page	350
Ending Page	353
File Size	602973
Page Count	4
File Format	PDF
ISBN	0780392108
DOI	10.1109/ICASIC.2005.1611335
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Voltage Capacitors Operational amplifiers Mirrors Application specific integrated circuits CMOS integrated circuits Microelectronics Signal design Signal processing Photoconductivity different gain choices CMOS infrared FPA ROIC
Content Type	Text
Resource Type	Article

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