Differential amplifier circuit, voltage regulator using the...

Details Differential amplifier circuit, voltage regulator using the... Differential amplifier circuit, voltage regulator using the...

2007-09-04

2009-10-06

Mottola, Steven J (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S051000

Reexamination Certificate

active

07598807

ABSTRACT:
A differential amplifier circuit, a voltage regulator using the differential amplifier circuit, and a method for controlling the differential amplifier circuit. The circuit includes a differential pair having a plurality of transistors, a first bias current generator circuit part to generate a first bias current to the differential pair, and a first bias current control circuit part to control a supply of the first bias current to the differential pair in response to a switching signal from outside, wherein the first bias current generator circuit part changes a current value of the first bias current in response to the switching signal.

REFERENCES:
patent: 7323932 (2008-01-01), Matsushita
patent: 2002-312043 (2002-10-01), None

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