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Proceedings Paper

Fully differential readout electronics for coplanar-grid detectors
Author(s): James E Toney; Christopher M Baer; Nader Kalkhoran
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Paper Abstract

We have demonstrated a new amplifier topology for coplanar-grid detectors that provides true differential readout with a single, fully-differential, charge-sensitive preamplifier. A prototype, multi-detector system with adjustable gain for each detector has been demonstrated using this fully differential approach. In its initial implementation using general-purpose amplifier chips, this system produces comparable noise performance to the traditional two-amplifier readout with specialized, charge-sensitive preamplifiers. In lieu of a differential gain to correct for electron trapping, the circuit uses a differential sampling scheme. This method enables a symmetrical photopeak to be obtained, but introduces some undesired filtering that limits energy resolution.

Paper Details

Date Published: 20 January 2004
PDF: 10 pages
Proc. SPIE 5198, Hard X-Ray and Gamma-Ray Detector Physics V, (20 January 2004); doi: 10.1117/12.504882
Show Author Affiliations
James E Toney, Battelle Memorial Institute (United States)
Christopher M Baer, Battelle Memorial Institute (United States)
Nader Kalkhoran, Spire Corp. (United States)

Published in SPIE Proceedings Vol. 5198:
Hard X-Ray and Gamma-Ray Detector Physics V
Larry A. Franks; Arnold Burger; Ralph B. James; Paul L. Hink, Editor(s)

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