Automatic gain control feedback amplifier

Details Automatic gain control feedback amplifier Automatic gain control feedback amplifier

2007-01-02

2007-01-02

Lee, Benny T. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including atomic particle or radiant energy impinging on a...

C250S2140AG, C250S2140AG

Reexamination Certificate

active

10995033

ABSTRACT:
There is provided a feedback amplifier capable of easily controlling its dynamic range without a separate gain control signal generation circuit. The feedback amplifier includes an input terminal detecting an input voltage from input current, a feedback amplification unit amplifying the input voltage to generate an output signal, and an output terminal outputting a signal amplified by the feedback amplification unit. The feedback amplification unit includes a feedback circuit unit including a feedback resistor located between the input terminal and the output terminal, and a feedback transistor connected in parallel to the feedback resistor; and a bias circuit unit supplying a predetermined bias voltage to the feedback transistor of the feedback circuit unit and merged in the feedback amplification unit.

REFERENCES:
patent: 5532471 (1996-07-01), Khorramabadi et al.
patent: 5952887 (1999-09-01), Katayanagi et al.
patent: 57-194613 (1982-11-01), None
patent: 1998-071656 (1998-10-01), None

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