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Proceedings Paper

A non-destructive readout circuit of the linear array image sensor with over 90dB dynamic range and 190k fps for radar system
Author(s): Cong-jie Yang; Zhi-yuan Gao; Xin-ji Zeng; Su-ying Yao; Jing Gao
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Paper Abstract

This paper presents a non-destructive readout circuit of the linear array image sensor with wide dynamic range and high speed readout for radar system. A multi-capacitor and self-regulated capacitive trans-impedance amplifier (CTIA) structure is employed to extend the dynamic range. The gain of the CTIA is auto adjusted by switching different capacitors to the integration node asynchronously according to the output voltage. A class AB OPA is utilized to drive all the additional capacitors to achieve high speed readout. A photo response curve presents as a polyline with 5 segments, which enables a 101.7 dB dynamic range. In addition, the exposure time is 5.12us in the simulation, then an over 190k fps is achieved.

Paper Details

Date Published: 13 April 2015
PDF: 6 pages
Proc. SPIE 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II, 95222P (13 April 2015); doi: 10.1117/12.2182154
Show Author Affiliations
Cong-jie Yang, Tianjin Univ. (China)
Zhi-yuan Gao, Tianjin Univ. (China)
Xin-ji Zeng, Tianjin Univ. (China)
Su-ying Yao, Tianjin Univ. (China)
Jing Gao, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 9522:
Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II
Xiangwan Du; Jennifer Liu; Dianyuan Fan; Jialing Le; Yueguang Lv; Jianquan Yao; Weimin Bao; Lijun Wang, Editor(s)

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