Operational amplifiers operating in temperature range from 300 to 4.2 K

We present preamplifiers for frequencies from dc to few 10 MHz operating over temperature range from 300 to 4.2 K. Typical application of these circuits which use CMOS operational amplifiers is to match high impedance cryogenic sensors with low impedance cables to lead out a signal to room temperatu...

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Bibliographic Details
Published in:Cryogenics (Guildford) 2008-03, Vol.48 (3), p.160-165
Main Authors: Švindrych, Z., Janů, Z., Soukup, F., Tichý, R.
Format: Article
Language:English
Subjects:
Applied sciences
CMOS
Cryoelectronics
Cryogenics
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Low-noise amplifiers
Refrigerating engineering. Cryogenics. Food conservation
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Summary:We present preamplifiers for frequencies from dc to few 10 MHz operating over temperature range from 300 to 4.2 K. Typical application of these circuits which use CMOS operational amplifiers is to match high impedance cryogenic sensors with low impedance cables to lead out a signal to room temperature electronics without bandwidth limiting while preserve signal to noise ratio and linearity. Temperature dependence of electrical characteristics is shown including dissipated power and input voltage noise density spectra.
ISSN:0011-2275
1879-2235
DOI:10.1016/j.cryogenics.2008.03.009