Differential to single-ended converter

Details Differential to single-ended converter Differential to single-ended converter

1987-04-22

1988-07-05

LaRoche, Eugene R.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330301, 330260, H03F 345

Patent

active

047557664

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.

REFERENCES:
patent: 4661780 (1987-04-01), Siligoni et al.

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