Temperature sensor

Details Temperature sensor Temperature sensor

2007-12-25

2007-12-25

Cox, Cassandra (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

External effect

Temperature

C327S513000

Reexamination Certificate

active

11165643

ABSTRACT:
A temperature sensor, which comprises a temperature-dependent element, a comparator unit, first/second capacitors and first/second switching capacitors, is provided. The temperature-dependent element has an input terminal selectively coupled to one of a first current source and a second current source, and has an output terminal. The comparator unit comprises a comparator and first/second feedback capacitors. One end of the first switching capacitor is coupled to the first comparator input terminal, and another end of the first switching capacitor is selectively coupled to one of two different voltages. One end of the second switching capacitor is coupled to the second comparator input terminal, and another end of the second switching capacitor is selectively coupled to one of two different voltages.

REFERENCES:
patent: 4505600 (1985-03-01), Suzuki et al.
patent: 5585752 (1996-12-01), Botti et al.
patent: 5982221 (1999-11-01), Tuthill
patent: 6097239 (2000-08-01), Miranda et al.
patent: 6934645 (2005-08-01), Kim
patent: 7010440 (2006-03-01), Lillis et al.

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