Computer Science
Scientific paper
Jan 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979spie..191..130f&link_type=abstract
In: Multiplex and/or high-throughput spectroscopy; Proceedings of the Seminar, San Diego, Calif., August 27, 28, 1979. (A80-4382
Computer Science
Amplifier Design, Cryogenics, Infrared Spectrometers, Optimization, Preamplifiers, Signal Detection, Design Analysis, Frequency Response, Systems Engineering, Thermal Noise
Scientific paper
The design optimization of the detector-preamplifier system is critical to the achievement of sensitive infrared spectrometers. It is shown that the use of frequency-compensated negative-feedback operational preamplifier based on JFET devices with cryogenically cooled solid state detectors yields state-of-the-art subsystems for IR spectrometers. In the design optimization the detector and its signal conditioning preamplifier are treated as a single subsystem. The approach is to solve for a range of load resistor values which produce a minimum noise equivalent power for any given dynamic range and bandwidth requirement. Both compensated and uncompensated frequency response subsystems are treated.
Baker David John
Frodsham D. G.
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