Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2008-04-18
2008-12-16
Nguyen, Khanh V (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S257000, C330S258000, C330S261000
Reexamination Certificate
active
07466198
ABSTRACT:
A differential gain boosted amplifier is provided. The differential amplifier includes at least one current mirror, at least one differential pair, at least one cascode, at least one differential gain boosting amplifier for differential current mirror voltage control, and at least one common mode amplifier comprising a common mode voltage to control the output common mode of the differential gain boosting amplifier. The common mode voltage includes a mirrored bias voltage. The mirrored bias voltage feeds directly into the common mode amplifier. A differential input voltage feeds directly into the differential gain boosting amplifier and the differential pair. A gain of the current mirror is boosted by the differential gain boosting amplifier. A differential output voltage is indicative of the differential input voltage with an increase in gain. The differential output voltage is connected to the cascode.
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International Business Machines - Corporation
McGinn IP Law Group PLLC
Nguyen Khanh V
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