Amplifiers – Signal feedback – Variable impedance in feedback path varied by separate...
Reexamination Certificate
2011-05-31
2011-05-31
Nguyen, Patricia (Department: 2817)
Amplifiers
Signal feedback
Variable impedance in feedback path varied by separate...
C330S260000, C330S254000
Reexamination Certificate
active
07952430
ABSTRACT:
An amplifier circuit for amplifying a differential input signal includes a first feedback resistance, a second feedback resistance, first transconductance circuitry, and second transconductance circuitry. The first feedback resistance is connected between a first input node and a first output node of the amplifier circuit. The second feedback resistance is connected between a second input node and a second output node of the amplifier circuit. The first transconductance circuitry is arranged to inject a transconductance current at a point along the first feedback resistance, and is configurable to vary the point along the first feedback resistance where the transconductance current is injected. The second transconductance circuitry is arranged to inject another transconductance current at a point along the second feedback resistance, and is configurable to vary the point along the second feedback resistance where the another transconductance current is injected.
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Hsu Winston
Margo Scott
MediaTek Singapore Pte. Ltd.
Nguyen Patricia
LandOfFree
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