Published May 9, 1985
| Published
Journal Article
Open
Ultra-low-noise, high-impedance preamp for cryogenic detectors
- Creators
- Brown, E. R.
Abstract
A preamplifier design is presented which is based on a common-drain JFET input. The midband noise performance is E_n = 0.42 nV/Hz^½, In = 2.8 fA/Hz^½. The circuit has considerably less input capacitance than comparably noisy common-source amplifiers. It is particularly useful for preamplification of 0.1 to 10 MHz signals from liquid-helium-cooled radiation detectors.
Additional Information
© 1985 The Institution of Electrical Engineers. 22nd March 1985. The author wishes to thank Colin Masson for stimulating conversations and a critical reading of the manuscript, and Glen Abrahams who assisted in the construction of the circuit. The work was supported by NASA grant NAGW-107.Attached Files
Published - 04251198.pdf
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04251198.pdf
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Additional details
- Eprint ID
- 79223
- Resolver ID
- CaltechAUTHORS:20170719-173551016
- NAGW-107
- NASA
- Created
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2017-07-20Created from EPrint's datestamp field
- Updated
-
2021-11-15Created from EPrint's last_modified field