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An Amplifier for Bolometric Detectors
- Publication Year :
- 2011
- Publisher :
- Professional Technical Group on Nuclear Science, 2011.
-
Abstract
- We describe the last stage of a readout for bolometric detectors consisting of a source follower Si-JFET held at its optimum temperature of operation and a room temperature second stage. Stringent limits on both white and low frequency noise are required. We present our design solution for the second-stage differential amplifier operated at room-temperature. A special circuit has been employed to achieve very low series noise. Possible noise sources from the power supply have been addressed and rejected. The amplifier features a white noise floor of about 400 pV/√Hz and low-frequency noise of 850 pV/√Hz at 1 Hz.
- Subjects :
- Physics
Nuclear and High Energy Physics
Noise temperature
business.industry
Electrical engineering
Y-factor
semiconductor device noise thermistor
power supplies to apparatu
Noise figure
Low-noise amplifier
Noise (electronics)
junction gate field effect transistor
Nuclear Energy and Engineering
Noise generator
bolometer
amplifier
Electronic engineering
Effective input noise temperature
readout electronic
Electrical and Electronic Engineering
business
Direct-coupled amplifier
nuclear electronic
particle detector
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....1fe2496413ddd9ed7bb1962e30b505b5