Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-06-12
2007-06-12
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C323S314000
Reexamination Certificate
active
10908222
ABSTRACT:
A voltage generation circuit generates a reference voltage using a bandgap reference. A countering circuit is included to adaptively counter for any deviations caused in a bandgap reference voltage such that the reference voltage is independent of fabrication process variations and changes in ambient temperature. In an embodiment, current, proportionate to deviation in absolute value of Vbe from a nominal value, is injected into an emitter-base junction to cause Vbe to equal the nominal value.
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Tao Li, Bhaskar Mitra, and Kabir Udeshi ; “A Low Voltage Bandgap Reference Circuit with Current Feedback”; EECS 413 Project, University of Michigan Department of Electrical Engineering and Computer Science, Michigan; Downloaded from http://www.eecs.umich.edu/˜mpflynn/Design˜Contest/Fall2003/Reports/kabir—bhaskar—tao.pdf, pp. 1-5.
“Bandgap Reference Trimming Procedure”, from the Bandgap Reference Generator; Aug. 5, 1999; Downloaded from http://www.orion-design.com/boost/bandgap—trim.pdf , Orion Design Technologies, Inc. (4 Pages).
Seedher Ankit
Tadeparthy Preetam Charan Anand
Brady W. James
Englund Terry L.
Shaw Steven A.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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