Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2005-07-05
2005-07-05
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S543000
Reexamination Certificate
active
06914475
ABSTRACT:
A bandgap reference-based voltage and current generator has a distributed circuit architecture, to reduce the number of voltage dropping components between voltage supply rails containing bandgap voltage generator circuitry. Base current error compensation circuitry is incorporated into current mirror circuits of the generator to yield a composite current having a desired component, defined exclusively in accordance with the desired bandgap voltage, and a base error component containing the desired bandgap voltage, but modified by a second base current error. By differentially combining these two components, the multiple port output current mirror stage removes the base error component of the composite current, leaving only the desired bandgap-based component at each of plural precision output current ports.
REFERENCES:
patent: 6340882 (2002-01-01), Chung et al.
patent: 6344776 (2002-02-01), Enriquez
patent: 6407620 (2002-06-01), Hirayama
patent: 6407621 (2002-06-01), Enriquez
Enriquez Leonel E.
Youngblood Douglas L.
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Intersil America's Inc.
Tra Quan
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