Differential to single-ended converter
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United States of America Patent
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-
Jul 5, 1988
Grant Date -
N/A
app pub date -
Apr 22, 1987
filing date -
Apr 22, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A differential to a single-ended converter circuit includes linearizing PN junctions that compensate for input signal voltage loss in the input stage. A variable voltage source and a resistor are provided for adjusting the voltage produced across these junctions by varying the current through these junctions. The converter circuit also includes a shunt feedback amplifier for inverting half the differential output voltage so that it sums with the differential voltage of opposite phase to produce the single-ended output signal. The shunt feedback amplifier is operated at a constant current to minimize error voltages. Bootstrapping is employed to linearize thermal distortion of the PN junctions and means are provided for compensating for the resulting thermal distortion.
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