Differential amplifier device, 2-stage amplifier device, and...

Details Differential amplifier device, 2-stage amplifier device, and... Differential amplifier device, 2-stage amplifier device, and...

2006-05-09

2006-05-09

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S155000

Reexamination Certificate

active

07042384

ABSTRACT:
A differential amplifier device is disclosed wherein the device comprises a differential amplifier circuit, a load circuit connected to the differential amplifier circuit; and a change-over switch connected to the load circuit for changing a gain of the differential amplifier circuit by switching between a full load where a whole of the load circuit is set to be the load of the differential amplifier circuit and a partial load where a part of the load circuit is set to be the load of the differential amplifier circuit, wherein the load circuit is configured to amplify an input signal and an output signal of the differential amplifier circuit in the full load.

REFERENCES:
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patent: 6530068 (2003-03-01), Cao et al.
patent: 6542722 (2003-04-01), Sorrells et al.
patent: 6750704 (2004-06-01), Connell et al.
patent: 6812786 (2004-11-01), Jackson et al.
patent: 6963233 (2005-11-01), Puccio et al.
patent: 0 743 747 (1996-11-01), None
patent: WO 03/103141 (2003-12-01), None

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