Amplifiers – With semiconductor amplifying device – Including combined diverse-type semiconductor device
Reexamination Certificate
2007-10-30
2007-10-30
Choe, Henry (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including combined diverse-type semiconductor device
C330S261000
Reexamination Certificate
active
11313545
ABSTRACT:
A small signal amplifier with a large signal output boost stage are connected between first and second supply rails. The small signal amplifier receives first and second input signals and provides an output signal at an output node which drives a load. Under small signal conditions, the output signal varies approximately linearly with the difference voltage. However, under large signal conditions, a rail-to-rail large signal output boost stage connected to the output node is arranged to drive the output node close to the first or second supply rail as needed to provide the current demanded by the load. The large signal output boost stage is off in small signal conditions, but comes on rapidly and transfers maximum charge to the load under large signal conditions.
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Mancini, Ron; “Anatomy of a Current-Feedback of AMP”; EDN; Dec. 5, 2005; p. 40.
PCT International Search Report; Feb. 15, 2007; 6 pps.; in International Application No. PCT/US2006/039097.
PCT Written Opinion of the International Searching Authority; Feb. 15, 2007; in International Application No. PCT/US2006/039097.
Analog Devices Inc.
Choe Henry
Koppel, Patrick, Heybl & Dawson
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