Low-voltage bipolar OTA having a linearity in transconductance over a wide input voltage range
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United States of America Patent
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Sep 29, 1998
Grant Date -
N/A
app pub date -
Jul 22, 1996
filing date -
Jul 21, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a bipolar OTA (operational transconductance amplifier) including a plurality of triple-tail cells, each of the plurality of triple-tail cells comprises a transistor pair of first and second transistors (Q1 and Q2) forming a differential input/output pair and a third transistor (Q3) applied with a control voltage (V.sub.C). The transistor pair and the third transistor are driven by a common tail current. The OTA has transistors (Q7 and Q8) for applying a dc offset voltage to an input signal of the differential input/output pair. The plurality of triple-tail cells have outputs connected in parallel.
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