Fast start-up low-voltage bandgap voltage reference circuit

Details Fast start-up low-voltage bandgap voltage reference circuit Fast start-up low-voltage bandgap voltage reference circuit

2005-06-14

2005-06-14

Cunningham, Terry D. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S541000, C327S542000, C323S313000

Reexamination Certificate

active

06906581

ABSTRACT:
A fast start-up low-voltage bandgap voltage reference circuit is disclosed. The bandgap voltage reference circuit includes: a first current generator, which is implemented by a self-bias unit and a current mirror for generating a first reference current with positive temperature coefficient; a second current generator, which is connected to a point with negative temperature coefficient in the first current generator to generate a second reference current with negative temperature coefficient; and a resistor for converting the first reference current and the second reference current into a low-voltage bandgap voltage independent of temperature. Because the bandgap voltage reference circuit of the invention uses the resistor to convert the first reference current and the second reference current into voltage, the circuit can provide low-voltage bandgap voltage.

REFERENCES:
patent: 6563295 (2003-05-01), Juang
patent: 6563370 (2003-05-01), Coady
patent: 6563371 (2003-05-01), Buckley et al.
patent: 2002/0093325 (2002-07-01), Ju
patent: 2003/0038672 (2003-02-01), Buckley et al.
patent: 2003/0123522 (2003-07-01), Hsu et al.

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