A 32x32 CTIA readout design for deep cryogenic applications

Jam Farhoomand; Lunming Yuen; Alan Hoffman; Nancy Lum; Larry Lum; Erick Young

doi:10.1117/12.685278

7 September 2006 A 32x32 CTIA readout design for deep cryogenic applications

Jam Farhoomand, Lunming Yuen, Alan Hoffman, Nancy Lum, Larry Lum, Erick Young

Proceedings Volume 6297, Infrared Spaceborne Remote Sensing XIV; 629711 (2006) https://doi.org/10.1117/12.685278
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

The full potential of far infrared and submillimeter detectors, operating at deep cryogenic temperatures (<4.2K), is only realized if large, two-dimensional arrays of these detectors are developed. The technology for fabricating suitable readouts for such detectors has been one of the main impediments in achieving this objective. In this paper, we present the design parameters of the first 2-side buttable, 32x32 (64x64 mosaic) readout multiplexer, specifically designed for direct-hybrid far IR detector arrays. The readout employs a high open-loop gain, capacitive transimpedance unit-cell design with eight outputs. It features eight selectable gain settings, AC coupling (auto zero) for better input uniformity, sample-and-hold circuitry, and provision to limit the readout glow. A special, 2-micron cryo-CMOS process has been adopted to prevent freeze out and ensure low noise and proper operation at deep cryogenic temperatures. Based on the performance of its predecessors, CRC696 and SBRC190, this device is expected to have CDS read noise of better than 100e^- at 2K.

Citation Download Citation

Jam Farhoomand, Lunming Yuen, Alan Hoffman, Nancy Lum, Larry Lum, and Erick Young "A 32x32 CTIA readout design for deep cryogenic applications", Proc. SPIE 6297, Infrared Spaceborne Remote Sensing XIV, 629711 (7 September 2006); https://doi.org/10.1117/12.685278

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