Design of a ROIC with high dynamic range for LWIR FPAs

Yongcheng Zhai; Ruijun Ding

doi:10.1117/12.2071838

11 November 2014 Design of a ROIC with high dynamic range for LWIR FPAs

Yongcheng Zhai, Ruijun Ding

Proceedings Volume 9275, Infrared, Millimeter-Wave, and Terahertz Technologies III; 927518 (2014) https://doi.org/10.1117/12.2071838
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

In this paper, a high performance readout integrated circuit (ROIC) designed for long wave infrared (LWIR) detectors is introduced, which has high dynamic range (HDR). To accommodate the wide scene dynamic range requirement, special circuit architecture is used to the input unit cell. A capacitive feedback transimpedance amplifier (CTIA) as input circuit is used to provide high injection efficiency, low input resistance, good linearity, precise voltage bias. Because of the restriction of the layout area, four unit cells will share an integration capacitor and each unit cell has a correlated double sampling (CDS) circuit, which allows the infrared focal plane arrays (IRFPA) to be operated in full frame snapshot mode and provides the maximum integration time available. The charge transfer circuit is used and we don't need to consider the drive ability of the unit cell. The simulation results confirm that the ROIC provides over a factor of 70dB dynamic range with the 5.0v power supply.

Citation Download Citation

Yongcheng Zhai and Ruijun Ding "Design of a ROIC with high dynamic range for LWIR FPAs", Proc. SPIE 9275, Infrared, Millimeter-Wave, and Terahertz Technologies III, 927518 (11 November 2014); https://doi.org/10.1117/12.2071838

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