DocumentCode
911019
Title
An Ultra Low Noise, Low Power Hybrid Preamplifier for X-Ray Spectrometry
Author
Iwanczyk, J.S. ; Dabrowski, A.J. ; Dancy, B.W. ; Patt, B.E. ; DeVore, T.M. ; Del Duca, A. ; Ortale, C. ; Schnepple, W.F. ; Barksdale, J.E. ; Thompson, T.J.
Volume
34
Issue
1
fYear
1987
Firstpage
124
Lastpage
126
Abstract
A hybrid preamplifier for use with high resolution HgI2 x-ray detectors has been developed. Full scale discrete component circuits were tested, and the final design was hybridized as a standard 20-pin dip package. The preamplifier can be configured to operate as a resistor or pulsed feedback mode device. In the pulsed light feedback mode the electronic noise measured by the pulser method with the input transistor cooled to approximately -30°C was 19.6 electrons RMS. The equivalent input noise at room temperature was 22 electrons RMS, and the power consumption was 220 mW. In the resistor feedback mode corresponding values of 30 electrons RMS and 200 mW were measured.
Keywords
Circuit noise; Circuit testing; Electronics packaging; Electrons; Feedback; Preamplifiers; Pulse measurements; Resistors; Spectroscopy; X-ray detectors;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/TNS.1987.4337314
Filename
4337314
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