Temperature sensor circuit, semiconductor integrated...

Details Temperature sensor circuit, semiconductor integrated... Temperature sensor circuit, semiconductor integrated...

2005-05-03

2005-05-03

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

External effect

Temperature

C374S170000, C374S181000

Reexamination Certificate

active

06888397

ABSTRACT:
A temperature sensor circuit which includes: an adjustment circuit which generates a first divided voltage obtained by dividing a reference voltage; a current generation circuit which has a transistor element and generates a current corresponding to a gate voltage of the transistor element, the first divided voltage being supplied to a gate terminal of the transistor element; a voltage generation circuit which includes a diode element to which the current is supplied, an analog voltage being generated between both ends of the diode element; and an analog/digital (A/D) conversion circuit which compares a second divided voltage obtained by dividing the reference voltage with the analog voltage and converts the analog voltage into a digital value.

REFERENCES:
patent: 6140860 (2000-10-01), Sandhu et al.
patent: 6674185 (2004-01-01), Mizuta

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