Liquid helium operation of CMOS multiplexer circuits for far infrared detector arrays

Computer Science – Performance

Scientific paper

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Far Infrared Radiation, Infrared Detectors, Photonics, Arrays, Cmos, Liquid Helium, Multiplexing

Scientific paper

The planned ESA Infrared Space Observatory's 'Isophot' photopolarimeter entails the design and manufacture of detector signal integrating multiplexers operating at or below 4 K. Although Si MOS transistors exhibit anomalies by comparison to room temperature operations at such low cryogenic temperatures, the circuit-design options presently discussed are judged likely to satisfy the stipulated performance requirements. It is projected that power dissipation will be lower than 300 microwatts at a readout rate of 9.4 kHz.

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