Correlated readout: a new readout method of focal plane array

Changqing Qiu; Xinde Wang; Ken K. Chin

doi:10.1117/12.321762

14 September 1998 Correlated readout: a new readout method of focal plane array

Changqing Qiu, Xinde Wang, Ken K. Chin

Proceedings Volume 3360, Infrared Readout Electronics IV; (1998) https://doi.org/10.1117/12.321762
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

A new readout method of coal pane array - correlated readout is presented for the first time. The interface circuit of this method is modeled as to charge and discharge the integration capacitor according to a control signal. Combined with an optical modulator, this readout method will be able to increase image's dynamic range and signal-to- noise ratio more effectively for strong background application. It will not only increase the output voltage swing but also attenuate noises that have lower frequency than the modulation frequency. Several interface circuits are designed and studied. SPICE simulation results show that correlated capacitive transimpedance amplifier may become a very promising correlated readout circuit. In order to study this new method experimentally by visible imager, a 16 by 16 silicon CMOS FPA demo chip has been designed, along with a test system. The application of this method on solar megnetrograph measurement is discussed.

Citation Download Citation

Changqing Qiu, Xinde Wang, and Ken K. Chin "Correlated readout: a new readout method of focal plane array", Proc. SPIE 3360, Infrared Readout Electronics IV, (14 September 1998); https://doi.org/10.1117/12.321762

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