Amplifiers – With semiconductor amplifying device – Including gain control means
Reexamination Certificate
2008-03-24
2010-10-12
Choe, Henry K (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including gain control means
C330S085000
Reexamination Certificate
active
07812673
ABSTRACT:
An amplifier has an input section with one or more input cells and an output section with one or more output cells. Either the input section or the output section includes at least two cells that may be selected to provide discrete gain settings. A loop amplifier is configured in a feedback arrangement with the input section. The input and output sections may have multiple selectable cells to provide coarse and fine gain steps. The gain of the loop amplifier may be coordinated with the gain of the input section to provide constant bandwidth operation.
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Cowles John
Gilbert Barrie
Analog Devices Inc.
Choe Henry K
Marger Johnson & McCollum PC
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