Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2006-05-09
2006-05-09
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C323S313000
Reexamination Certificate
active
07042279
ABSTRACT:
A reference voltage generating circuit is provided that includes: a differential amplifier amplifying an input signal and generate a reference voltage; an output amplifier amplifying the reference voltage and outputting the amplified reference voltage; and a startup circuit connected between an output terminal of the differential amplifier and an input terminal of the output amplifier. The startup circuit has a first switch and a second switch. The first switch connects the output terminal of the differential amplifier and the input terminal of the output amplifier according to a voltage of an output terminal of the output amplifier. The second switch connects the input terminal and the output terminal of the output amplifier according to a voltage of the output terminal of the differential amplifier.
REFERENCES:
patent: 5610506 (1997-03-01), McIntyre
patent: 6204653 (2001-03-01), Wouters et al.
patent: 6509726 (2003-01-01), Roh
patent: 6542027 (2003-04-01), Zha et al.
patent: 6815941 (2004-11-01), Butler
patent: 2000-181554 (2000-06-01), None
Arent & Fox PLLC
Fujitsu Limited
Le Dinh T.
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