Temperature sensor circuit and calibration method thereof

Details Temperature sensor circuit and calibration method thereof Temperature sensor circuit and calibration method thereof

2008-07-15

2008-07-15

Verbitsky, Gail (Department: 2855)

Thermal measuring and testing

Thermal calibration system

C374S163000

Reexamination Certificate

active

07399116

ABSTRACT:
A temperature sensor circuit comprises a first monitor voltage generation circuit that generates a first monitor voltage with a characteristic that changes with respect to temperature; a second monitor voltage generation circuit that generates a second monitor voltage with a characteristic that changes by a variation amount different from the first monitor voltage with respect to the temperature; and a differential amplifier circuit, to which the first and second monitor voltages are inputted and that outputs the result of comparing the two voltages. Further, the differential amplifier circuit of the temperature sensor circuit is capable of switching to a first connection state, which outputs the comparison result, and to a second connection state, which outputs an offset monitor voltage that is rendered by adding the offset voltage of the differential amplifier circuit to the first or second monitor voltage or subtracting the offset voltage therefrom.

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patent: 6334093 (2001-12-01), More
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patent: 7029171 (2006-04-01), Tesi et al.
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patent: 2000-165241 (2000-06-01), None
patent: 2002-149252 (2002-05-01), None

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