Method and apparatus for measuring temperature using an inherent

Details Method and apparatus for measuring temperature using an inherent Method and apparatus for measuring temperature using an inherent

1993-11-03

1995-05-30

Gutierrez, Diego F. F.

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

374141, G01K 701

Patent

active

054196370

ABSTRACT:
An integrated circuit, diode-based temperature sensor circuit (10) is amenable to fabrication upon a readout circuit (12) that is coupled during use to a FPA or radiation detectors. The sensor circuit is inherently self-calibrated, and provides for a cancellation of circuit offsets and other error sources. The circuit has an output that is time-multiplexed onto a data path that normally conveys a video data stream away from the readout circuit. The circuit operates to selectively forward bias a diode (D1) with two different currents. A difference between the currents is shown to indicate the temperature of the diode's p-n junction.

REFERENCES:
patent: 3092998 (1963-06-01), Barton
patent: 3440883 (1969-04-01), Lightner
patent: 3566690 (1971-03-01), Ebrahimi
patent: 4021722 (1977-05-01), Crowle
patent: 5195827 (1993-03-01), Audy et al.

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