Computer Science
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1684...40m&link_type=abstract
In: Infrared readout electronics; Proceedings of the Meeting, Orlando, FL, Apr. 21, 22, 1992 (A93-53076 23-33), p. 40-48.
Computer Science
Background Noise, Cryogenic Equipment, Field Effect Transistors, Infrared Instruments, Multiplexing, Cmos, Space Infrared Telescope Facility, Spacecraft Instruments
Scientific paper
A novel cryogenic design of a source follower per detector (SFD) direct readout multiplexer is demonstrated. This design has proven to be a good prototype for the development of new low-noise large-area cryogenic multiplexers. In the absence of clocking noise, the readout demonstrates as low as about 30 electrons of rms read noise. There is still an excess noise component feeding through when the array is clocked, which manifests itself only at the lower temperatures. The shape of this component is dependent on a number of the bias voltages, and especially on the temperature of the chip. Analysis of the noise spectral density of the unit cell under various bias conditions shows that there is an excess spectral noise component at the lower temperatures.
Kleinhans W. A.
Low Frank J.
McCreight Craig R.
McKelvey Mark E.
McMurray Robert E. Jr.
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