Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-12-11
2007-12-11
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
Reexamination Certificate
active
11343555
ABSTRACT:
A voltage supply circuit for generating a composite bandgap reference voltage includes a single bandgap reference voltage circuit and a select circuit. The bandgap reference circuit has a first output to generate a first bandgap voltage having a first temperature coefficient and has a second output to generate a second bandgap voltage having a second temperature coefficient that is different from the first temperature coefficient. The select circuit has a first input to receive the first bandgap voltage, a second input to receive the second bandgap voltage, and an output to selectively provide either the first bandgap voltage or the second bandgap voltage as the composite bandgap reference voltage.
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Xilinx, Inc.; U.S. Appl. No. 11/343,948 by Voogel et al.; filed on Jan. 31, 2006.
Cartier Lois D.
Paradice III William L.
Tra Quan
Xilinx , Inc.
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