Amplifier circuit operable at low power source voltage

Details Amplifier circuit operable at low power source voltage Amplifier circuit operable at low power source voltage

1990-02-08

1991-05-07

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330258, 330261, H03F 345

Patent

active

050140191

ABSTRACT:
A differential pair of transistors are supplied with input currents at the base electrodes thereof. The emitter electrodes and the collector electrodes of the differential pair are connected in common, respectively. The base electrodes of the differential pair are connected to a current source which provides a constant current which is proportional to the sum of the collector currents of the differential pair.

REFERENCES:
patent: 3671877 (1972-06-01), Van Den Plassche
patent: 4147944 (1979-04-01), Monticelli

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