Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2011-03-01
2011-03-01
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
Reexamination Certificate
active
07898320
ABSTRACT:
An auto-nulled bandgap reference system employing a substrate bandgap reference circuit with primary and auxiliary amplifiers and a switching circuit which in a first mode develops a voltage to null the offset and noise errors of the auxiliary amplifier and then in the second mode uses the nulled auxiliary amplifier to develop a voltage to null the offset and noise errors of the primary amplifier; and a strobe circuit including an output storage device and a strobe control circuit for periodically powering up a bandgap reference circuit to charge the output storage device and powering down the bandgap reference circuit to conserve power.
REFERENCES:
patent: 5959471 (1999-09-01), Weinfurtner
patent: 6531911 (2003-03-01), Hsu et al.
Sanduleanu, et al., “Accurate Low Power Badgap Voltage Reference in 0.5 um CMOS Technology”, Electronic Letters, May 14, 1998, vol. 34(No.10) pp. 1025-1026.
Ashburn Michael A.
Harston Stephen W.
Analog Devices Inc.
Donovan Lincoln
Kenyon & Kenyon LLP
Rojas Daniel
LandOfFree
Auto-nulled bandgap reference system and strobed bandgap... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Auto-nulled bandgap reference system and strobed bandgap..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Auto-nulled bandgap reference system and strobed bandgap... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2669725