Thermal measuring and testing – Temperature measurement – By electrical or magnetic heat sensor
Patent
1991-12-13
1993-05-25
Cuchlinski, Jr., William A.
Thermal measuring and testing
Temperature measurement
By electrical or magnetic heat sensor
307310, G01K 700
Patent
active
052134164
ABSTRACT:
A novel on-chip temperature sensing circuit includes a differential voltage source which comprises a plurality of branches each of which is provided with temperature sensitive transistor means. The differential output from the differential voltage source is coupled to the inputs of a high gain differential amplifier and the outputs from the high gain differential amplifier are connected to a second stage differential amplifer and one of the branches of the second stage differential amplifier is coupled to a high gain transistor amplifier which is connected to an output pin on the semiconductor chip so that the signal at the output pin is a noise tolerant voltage indication of the temperature of said semiconductor chip which may be monitored during actual online operations. A hysteresis feedback may be coupled between one of the outputs of the differential amplifiers to provide a hysteresis feedback loop and rapid switching of the second differential amplifier.
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Fussell Richard L.
Neely Andrew
Bennett G. Bradley
Cuchlinski Jr. William A.
Sowell John B.
Starr Mark T.
Unisys Corporation
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