Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2006-05-02
2008-11-25
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
C327S542000, C323S313000
Reexamination Certificate
active
07456679
ABSTRACT:
A reference circuit includes: (a) a first reference circuit having a reference signal and a ΔVBEloop; and (b) a modification circuit using a first voltage to change a first current in the ΔVBEloop of the first reference circuit. In one embodiment, the reference circuit is a voltage reference circuit. In some embodiments, the reference circuit can include a bandgap core circuit, which adds a VBEand a multiplied ΔVBE, so that the output voltage of the reference circuit is a bandgap voltage. The reference circuit also can also include a modification circuit, which uses the output voltage (i.e. the reference signal) of the bandgap core circuit to change a current in the ΔVBEloop. The ΔVBEloop can be the portion of the circuit involved in generating the ΔVBEvoltage. Other embodiments are disclosed in this application.
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Bynum Byron G.
Pigott John M.
Bryan Cave LLP
Donovan Lincoln
Freescale Semiconductor Inc.
O'Neill Patrick
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