Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Parallel controlled paths
Reexamination Certificate
2007-09-18
2007-09-18
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Parallel controlled paths
C327S099000
Reexamination Certificate
active
11350414
ABSTRACT:
A self-repairable semiconductor comprises a first device and a replacement device. A switching device selectively swaps the replacement device for the first device when the first device is non-operable. The switching device includes an analog switching circuit that selects one of a first pair of differential outputs of the first device having a first common mode voltage and a second pair of differential outputs of the replacement device having a second common mode voltage. The analog switching circuit includes first and second switches having one of a source and drain that communicate with the first pair of differential outputs. Third and fourth switches have one of a source and drain that communicate with the second pair of differential outputs. An amplifier has a first input that communicates with the other of the source and drain of the first and third switches and a second input that communicates with the other of the source and drain of the second and fourth switches. A common mode feedback circuit communicates with the first and second inputs of the amplifier and maintains a common mode voltage input of the amplifier below the first and second common mode voltages.
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Hiltunen Thomas J.
Marvell International Ltd.
Wells Kenneth B.
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