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US 2010/0231302 A1Published application
Amplification circuit
AssigneeAlps Electric Co., Ltd.
InventorsTsutomu Kunishima, Akira Takayama
Life of this patent
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Abstract
An amplification circuit includes a semiconductor amplification element, a current feedback circuit that is connected to a terminal close to a ground side of the semiconductor amplification element and can control gain reduction, and a voltage feedback circuit that is connected between an input terminal and an output terminal of the semiconductor amplification element and can control feedback voltage. The feedback voltage of the voltage feedback circuit may be varied according to the gain reduction controlled by the current feedback circuit.
Claims9
An amplification circuit comprising:
- a semiconductor amplification element;
- a current feedback circuit connected to a terminal close to a ground side of the semiconductor amplification element and can control gain reduction;
- and
- a voltage feedback circuit connected between an input terminal and an output terminal of the semiconductor amplification element and can control feedback voltage,
- wherein the feedback voltage of the voltage feedback circuit varies according to the gain reduction controlled by the current feedback circuit.
2 more elements
Dependencies are inferred from the claim text.