Ultra-Low-Noise, High-Impedance Preamp for Cryogenic Detectors

Authors

Elliott R. Brown, Wright State University - Main CampusFollow
Jocelyn Keene, California Institute of Technology
T. G. Phillips, California Institute of Technology

Document Type

Article

Publication Date

5-9-1985

Identifier/URL

42985840 (Pure)

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Abstract

A preamplifier design is presented which is based on a common-drain JFET input. The midband noise performance is En = 0.42 nV/Hz½, In = 2.8 fA/Hz½. 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.

Repository Citation

Brown, E. R., Keene, J., & Phillips, T. G. (1985). Ultra-Low-Noise, High-Impedance Preamp for Cryogenic Detectors. Electronics Letters, 21 (10), 417-418.
https://corescholar.libraries.wright.edu/physics/1458

DOI

10.1049/el:19850296