Reference voltage source, temperature sensor, temperature...

Details Reference voltage source, temperature sensor, temperature... Reference voltage source, temperature sensor, temperature...

2005-08-16

2005-08-16

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S513000

Reexamination Certificate

active

06930538

ABSTRACT:
The invention relates to an electrical reference voltage source comprising: a first electrical current source (PTAT101) adapted to produce a first current (14) proportional to a temperature; and a second electrical current source (CPTAT102) adapted to produce a second current (15) inversely proportional to the temperature. According to the invention, the first and second current sources are installed in parallel and the voltage source comprises means (R3) of summating the first and second currents producing a reference current in the summation means generating the reference voltage (VREF) at the terminals of the summation means. The invention also relates to a temperature sensor, a temperature threshold detector, a chip and a corresponding system.

REFERENCES:
patent: 5034626 (1991-07-01), Pirez et al.
patent: 5604427 (1997-02-01), Kimura
patent: 5818294 (1998-10-01), Ashmore, Jr.
patent: 6239868 (2001-05-01), Jung et al.
patent: 6335661 (2002-01-01), Furman
patent: 6356161 (2002-03-01), Nolan et al.

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