C3.2 Evaluation of Cryogenic Preamplifiers for Infrared Focal Plane Array Detectors
- SMSI 2020
(did not take place because of Covid-19 virus pandemic)
- SMSI 2020 - Sensors and Instrumentation
- C3 IRS² Satellite Conference: Infrared Cameras and Thermal Imaging
- C. Mandla, M. Plattner - Max-Planck-Institute for Extraterrestrial Physics, Garching (Germany), M. Engelhardt, N. Bezawada, D. Ives - European Southern Observatory, Garching (Germany)
- 163 - 164
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.