C3.2 Evaluation of Cryogenic Preamplifiers for Infrared Focal Plane Array Detectors

Event
SMSI 2020
-
(did not take place because of Covid-19 virus pandemic)
Band
SMSI 2020 - Sensors and Instrumentation
Chapter
C3 IRS² Satellite Conference: Infrared Cameras and Thermal Imaging
Author(s)
C. Mandla, M. Plattner - Max-Planck-Institute for Extraterrestrial Physics, Garching (Germany), M. Engelhardt, N. Bezawada, D. Ives - European Southern Observatory, Garching (Germany)
Pages
163 - 164
DOI
10.5162/SMSI2020/C3.2
ISBN
978-3-9819376-2-6
Price
free

Abstract

Infrared focal plane array detectors for instrumentation of ground-based telescopes such as the VLT are operated at cryogenic temperatures to minimize dark current and reduce cosmetics. To achieve high signal integrity, the analogue video outputs of MCT type sensors from Teledyne, Raytheon or Leonardo are typically amplified inside the cryo-environment close to the detector and which requires highly efficient preamplifier designs and devices. Within the scope of this paper, three design concepts built from commercial products are compared and simulated regarding power consumption, bandwidth, and noise.

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