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Proceedings Paper

VERITAS 2.2: a low noise source follower and drain current readout integrated circuit for the wide field imager on the Athena x-ray satellite
Author(s): Sven Herrmann; Anna Koch; Sara Obergassel; Wolfgang Treberspurg; Michael Bonholzer; Norbert Meidinger
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Paper Abstract

VERITAS 2.2 is an evolutionary step of the VERITAS readout integrated circuit (ROIC) architecture designed for high speed, low noise DEPFET source follower or drain readout for the Wide Field Imager on the Athena X-ray satellite. Drain readout, also known as current readout, mitigates the RC time of the classical source follower readout. This is particularly beneficial for large DEPFET detectors where the line capacitance is large, with the current measured at the drain of the DEPFET transistor providing an immediate signal proportional to the collected charge in the pixel. VERITAS 2.2 is designed to address the implementation challenges of drain readout and deliver consistent performance at short processing time (2.5 μs) with a system noise better than 3 e - .

Paper Details

Date Published: 12 July 2018
PDF: 8 pages
Proc. SPIE 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII, 1070935 (12 July 2018); doi: 10.1117/12.2314335
Show Author Affiliations
Sven Herrmann, Stanford Univ. (United States)
SLAC National Accelerator Lab. (United States)
Anna Koch, Max-Planck-Institut für extraterrestrische Physik (Germany)
Sara Obergassel, Max-Planck-Institut für extraterrestrische Physik (Germany)
Wolfgang Treberspurg, Max-Planck-Institut für extraterrestrische Physik (Germany)
Michael Bonholzer, Max-Planck-Institut für extraterrestrische Physik (Germany)
Norbert Meidinger, Max-Planck-Institut für extraterrestrische Physik (Germany)

Published in SPIE Proceedings Vol. 10709:
High Energy, Optical, and Infrared Detectors for Astronomy VIII
Andrew D. Holland; James Beletic, Editor(s)

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