Integrated circuit temperature sensor

Details Integrated circuit temperature sensor Integrated circuit temperature sensor

1985-09-23

1986-11-25

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307254, 307296R, 307303, 374178, H03K 326, G01K 700

Patent

active

046251286

ABSTRACT:
An electrical circuit functioning as a temperature sensor which is fully compatible with silicon chip and similar integrated circuit technology. Four matched NPN bi-polar transistors provide a circuit that detects changes in temperature by monitoring the current throughput in operation. Environmental temperatures increase current approximately one order of magnitude for each 25 degrees centigrade of changing temperature. With a current gain of 100 for each transistor employed, the current increases from 0.1 microamp at 0 degrees centigrade to 11 microamps at 50 degrees centigrade.

REFERENCES:
patent: 3641372 (1972-02-01), Green et al.
patent: 3899695 (1975-08-01), Solomon et al.

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