A 1024×512 ROIC with 30μm pixel pitch and 250Hz high frame rate for shortwave infrared detector

Zhangcheng Huang; Songlei Huang; Xuquan Wang; Yu Chen; Jiaxiong Fang

doi:10.1117/12.2306043

23 May 2018 A 1024×512 ROIC with 30μm pixel pitch and 250Hz high frame rate for shortwave infrared detector

Zhangcheng Huang, Songlei Huang, Xuquan Wang, Yu Chen, Jiaxiong Fang

Proceedings Volume 10624, Infrared Technology and Applications XLIV; 106241M (2018) https://doi.org/10.1117/12.2306043
Event: SPIE Defense + Security, 2018, Orlando, FL, United States

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.

Conference Presentation

Citation Download Citation

Zhangcheng Huang, Songlei Huang, Xuquan Wang, Yu Chen, and Jiaxiong Fang "A 1024×512 ROIC with 30μm pixel pitch and 250Hz high frame rate for shortwave infrared detector", Proc. SPIE 10624, Infrared Technology and Applications XLIV, 106241M (23 May 2018); https://doi.org/10.1117/12.2306043

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