Amplifier circuit

Details Amplifier circuit Amplifier circuit

2006-08-29

2006-08-29

Choe, Henry (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S261000

Reexamination Certificate

active

07098736

ABSTRACT:
An amplifier circuit has a simple circuit architecture that enables a push-pull output function while exhibiting low power consumption. The amplifier circuit includes a first transconductance amplifier to which an output of a two-input differential amplifier and a first bias voltage are input. An output of the first transconductance amplifier is connected to another input and an output of a second transconductance amplifier, which has one input thereof connected to an output of the first transconductance amplifier and a gate of a first output transistor. The output of the differential amplifier is connected to a gate of a second output transistor, which has the polarity opposite to the polarity of the first output transistor. Drains of the first and the second output transistors are connected to each other thus constituting a push-pull output.

REFERENCES:
patent: 4800339 (1989-01-01), Tanimoto et al.
patent: 5907259 (1999-05-01), Yamada et al.
patent: 6542034 (2003-04-01), Tomasini et al.
patent: 6828855 (2004-12-01), Wang
patent: 8-222972 (1996-08-01), None
patent: 2688477 (1997-08-01), None

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