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Proceedings Paper

A new design of ROIC with CDS and programmable arbitrary line selection
Author(s): Pan Wang; Rui-jun Ding; Guo-qiang Chen; Hong-lei Chen; Li-chao Hao
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Paper Abstract

In this paper, a new design of readout integrated circuit application in short wave infrared is introduced. An amplifier of one transistor is employed in the CTIA to reduce the area of the unit cell. The output unit cell achieved CDS (correlated double sampling) and SH (sample and hold) is designed for public use of a whole line, and is outside the array. A new digital control structure of IRFPA ROIC is presented, with which the integral voltage of arbitrary contiguous or noncontiguous lines, rather than regular lines, can be selected to readout. The structure of the circuitry and the operation principle are analyzed, showing that the output dynamic range is over 2.5V, the cell capacity is more than 0.5Me- the frame rate is 250Hz, and the linearity within working dynamic range is above 99.9 percent. This design is going to be fabricated through Chartered 0.35um double-poly-four-metal (DPFM) process technique, and the pixel occupies a 30um by 30um area.

Paper Details

Date Published: 8 September 2011
PDF: 8 pages
Proc. SPIE 8193, International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, 819316 (8 September 2011); doi: 10.1117/12.899594
Show Author Affiliations
Pan Wang, Shanghai Institute of Technical Physics (China)
Graduate Univ. of the Chinese Academy of Sciences (China)
Rui-jun Ding, Shanghai Institute of Technical Physics (China)
Guo-qiang Chen, Shanghai Institute of Technical Physics (China)
Graduate Univ. of the Chinese Academy of Sciences (China)
Hong-lei Chen, Shanghai Institute of Technical Physics (China)
Li-chao Hao, Shanghai Institute of Technical Physics (China)
Graduate Univ. of the Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 8193:
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications

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