Auto gain controller

Details Auto gain controller Auto gain controller

2007-07-17

2007-07-17

Shingleton, Michael B (Department: 2815)

Amplifiers

Signal feedback

Variable impedance in feedback path varied by separate...

C330S282000, C330S310000, C330S278000, C250S336100, C250S206000, C250S2140AG

Reexamination Certificate

active

10956057

ABSTRACT:
A gain-controlled transimpedance amplifier circuit that comprises a first gain unit including an input for receiving a first current and an output, a current source for providing a second current, a second gain unit including an input and an output, a first impedance unit of a first impedance coupled in parallel with the second gain unit, and a comparator including an output, a first input coupled to the output of the first gain unit, and a second input coupled to the output of the second gain unit.

REFERENCES:
patent: 6961746 (2005-11-01), Tang
patent: 2003/0219260 (2003-11-01), Chiou et al.

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