Common-mode feedback circuit and differential operational...

Details Common-mode feedback circuit and differential operational... Common-mode feedback circuit and differential operational...

2006-02-14

2006-02-14

JeanPierre, Peguy (Department: 2819)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S259000, C330S260000

Reexamination Certificate

active

06998917

ABSTRACT:
A common-mode feedback circuit outputs a control voltage to define a common-mode operating point of a fully differential amplifier. The common-mode feedback circuit has a voltage dividing circuit and a differential amplifier. The voltage dividing circuit divides a voltage across two output ends of the fully differential amplifier. The differential amplifier receives an output voltage of the voltage dividing circuit and a reference voltage, and an output voltage of the differential amplifier is supplied as the control voltage to the fully differential amplifier.

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