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A 1024×512 ROIC with 30μm pixel pitch and 250Hz high frame rate for shortwave infrared detector
Author(s): Zhangcheng Huang; Songlei Huang; Xuquan Wang; Yu Chen; Jiaxiong Fang
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Paper Abstract

In order to satisfy the requirements of short-wave infrared hyperspectral detection, we developed a 1024 x 512 ROIC with 30μm pixel pitch. CTIA with cascode amplifier was utilized as input stage and CDS was used for eliminating KTC noise and 1/f noise in CTIA. For this large chip with sizes up to 30mm x 20mm, it has been found that column circuit was a major bottleneck to achieve high frame frequency. A solution to solve this problem in this work is to pre-establish the signal of the column amplifier and then buffer odd and even column signals to the bus alternatively. In addition, parasitic capacitance of column-level bus was carefully lowered in layout design. The total readout rate reached 120 Mpixels/s with eight parallel output channels which allowed for a frame rate of 250 Hz.

Paper Details

Date Published: 23 May 2018
PDF: 8 pages
Proc. SPIE 10624, Infrared Technology and Applications XLIV, 106241M (23 May 2018); doi: 10.1117/12.2306043
Show Author Affiliations
Zhangcheng Huang, Shanghai Institute of Technical Physics (China)
Songlei Huang, Shanghai Institute of Technical Physics (China)
Xuquan Wang, Shanghai Institute of Technical Physics (China)
Yu Chen, Shanghai Institute of Technical Physics (China)
Jiaxiong Fang, Shanghai Institute of Technical Physics (China)


Published in SPIE Proceedings Vol. 10624:
Infrared Technology and Applications XLIV
Bjørn F. Andresen; Gabor F. Fulop; Charles M. Hanson; John Lester Miller; Paul R. Norton, Editor(s)

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