Class AB rail-to-rail operational amplifier

Details Class AB rail-to-rail operational amplifier Class AB rail-to-rail operational amplifier

2009-02-25

2010-11-02

Nguyen, Khanh V (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S259000

Reexamination Certificate

active

07825729

ABSTRACT:
An operational amplifier includes an output unit, a voltage drop element and a feedback unit. The output unit is provided for sourcing an output current to an output of the operational amplifier when operating with a power unit for providing a current being multiple times the value of the output current. The voltage drop is provided for generating a voltage drop in accordance with the output current. The feedback unit is controlled with the voltage drop generated by the voltage drop element and controls the output unit and the power unit to regulate the output current in accordance with the voltage drop.

REFERENCES:
patent: 6066985 (2000-05-01), Xu
patent: 6420931 (2002-07-01), Maida

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