The simulation of a readout integrated circuit with high dynamic range for long wave infrared FPA

Yongcheng Zhai; Rui-jun Ding; Guo-qiang Chen; Pan Wang; Li-chao Hao

doi:10.1117/12.2035100

19 December 2013 The simulation of a readout integrated circuit with high dynamic range for long wave infrared FPA

Yongcheng Zhai, Rui-jun Ding, Guo-qiang Chen, Pan Wang, Li-chao Hao

Proceedings Volume 9045, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Processing Technology; 90450Q (2013) https://doi.org/10.1117/12.2035100
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

Abstract

This paper describes the simulation results of a high performance readout integrated circuit (ROIC) designed for long wave infrared (LWIR) detectors, which has high dynamic range (HDR). A special architecture is used to the input unit cell to accommodate the wide scene dynamic range requirement, thus providing over a factor of 70dB dynamic range. A capacitive feedback transimpedance amplifier (CTIA) provides a low noise detector interface circuit capable of operating at low input currents and a folded cascade amplifier with a gain of 73dB is designed. A 6.4pF integration capacitor is used for supporting a wide scene dynamic range, which can store 80Me. Because of the restriction of the layout area, four unit cells will share an integration capacitor. A sample and hold capacitor is also part of the input unit cell architecture, which allows the infrared focal plane arrays (IRFPA) to be operated in full frame snapshot mode and provides the maximum integration time available. The integration time is electronically controlled by an external clock pulse. The simulation results show that the circuit works well under 5V power supply and the nonlinearity is calculated less than 0.1%. The total power dissipation is less than 150mW.

Citation Download Citation

Yongcheng Zhai, Rui-jun Ding, Guo-qiang Chen, Pan Wang, and Li-chao Hao "The simulation of a readout integrated circuit with high dynamic range for long wave infrared FPA", Proc. SPIE 9045, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Processing Technology, 90450Q (19 December 2013); https://doi.org/10.1117/12.2035100

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available