A high SNR readout circuit design for TDI array with adaptive charge capacity control

Chul Bum Kim; Chi Ho Hwang; Yong Soo Lee; Hee Chul Lee

doi:10.1117/12.719143

14 May 2007 A high SNR readout circuit design for TDI array with adaptive charge capacity control

Chul Bum Kim, Chi Ho Hwang, Yong Soo Lee, Hee Chul Lee

Proceedings Volume 6542, Infrared Technology and Applications XXXIII; 65423U (2007) https://doi.org/10.1117/12.719143
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

In this paper, a novel high SNR readout circuit for a satellite TDI array is presented. Since an input range of an IR image for environmental satellites is broad and especially the cloud top temperature (CTT) that is important in understanding phenomena of atmosphere is quite low, the readout of low temperature signal is important in satellite applications. However, the noise resulted from a readout circuit is no longer ignorable compared to a detector shot noise at low IR radiation. Hence, an adaptive charge capacity control method is proposed in this paper for an improved SNR at low temperature. It is found that SNR is improved as much as 11dB at 200K and 90% background-limited infrared photodetection (BLIP) condition is satisfied over a total input range by simulation.

Citation Download Citation

Chul Bum Kim, Chi Ho Hwang, Yong Soo Lee, and Hee Chul Lee "A high SNR readout circuit design for TDI array with adaptive charge capacity control", Proc. SPIE 6542, Infrared Technology and Applications XXXIII, 65423U (14 May 2007); https://doi.org/10.1117/12.719143

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