Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2006-09-25
2008-09-09
Cox, Cassandra (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S309000
Reexamination Certificate
active
07423476
ABSTRACT:
A circuit and method for providing an output current that includes biasing an output transistor in accordance with a reference current to conduct the output current and further includes maintaining a voltage across the output transistor. One embodiment includes conducting a reference current through a diode-coupled first field-effect transistor (FET) and biasing a gate of a second FET matched to the diode-coupled first FET by a voltage equal to a gate voltage of the diode-coupled first FET. A current equal to the reference current is conducted through a third FET having a gate coupled to a drain of the second FET, the third FET matched to the second FET.
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Cox Cassandra
Dorsey & Whitney LLP
Micro)n Technology, Inc.
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