Variable transconductance amplifier
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 16, 2001
Grant Date -
N/A
app pub date -
Jun 8, 2000
filing date -
Jun 10, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A variable transconductance amplifier comprises transistors and whose emitters are connected via resistors and to a constant current source to form a differential or long tail pair. A feedback amplifier whose transconductance is controllable has inputs connected to the collectors of the transistors and outputs connected to the emitters thereof. The feedback amplifier thus supplies a differential current to the emitters of the transistors which corresponds to the product of the differential output signal of the transistors and the variable transconductance of the feedback amplifier.
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