Differential amplifier circuit capable of reducing current...

Details Differential amplifier circuit capable of reducing current... Differential amplifier circuit capable of reducing current...

2007-11-13

2007-11-13

Choe, Henry (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S261000

Reexamination Certificate

active

11265701

ABSTRACT:
An integrated circuit device includes a differential amplifier, an output driver and a control circuit. The differential amplifier is responsive to a pair of differential input signals and may include a pull-down current source responsive to a pair of bias signals. The output driver has a pull-up path and pull-down path therein. These paths are joined together at an output node. The output driver has a first input terminal electrically coupled to a first output terminal of the differential amplifier. The control circuit is electrically coupled to the differential amplifier and a second input terminal of the output driver. The control circuit is configured to dispose the pull-down path in a nonconductive state when the output node is being switched low-to-high.

REFERENCES:
patent: 6057734 (2000-05-01), Xu
patent: 6384685 (2002-05-01), Juang
patent: 6727753 (2004-04-01), Moon
patent: 05-191162 (1993-07-01), None
patent: 2000-278058 (2000-10-01), None
patent: 2003-115729 (2003-04-01), None
patent: 2003-229725 (2003-08-01), None

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