Amplifiers – With semiconductor amplifying device – Including current mirror amplifier
Patent
1981-06-04
1983-12-13
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including current mirror amplifier
330257, 330296, 330300, 330311, H03F 316
Patent
active
044207263
ABSTRACT:
First and second transistors of first and second types that can exhibit respective first and second potentials of first and second opposite polarities between their respective input and common electrodes when respective currents flow in conduction paths between their respective output and common electrodes. The transistors are connected in cascade with the input electrode of the first transistor connected to an input point, the common electrode of the first transistor connected to the input electrode of the second, and the conduction path of the second transistor coupled to a load. A circuit for operating the first transistor at the first potential to compensate, at least in part, for the second potential comprises a third transistor of the first type to which is applied a potential of the first polarity between its input and common electrodes to establish a current in its conduction path. A current directly related to the current in the conduction path of the third transistor is applied to the common electrode of the second transistor as substantially the entire current flow in its conduction path.
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J. Roberts et al., "MOS-Bipolar Amplifiers", Wireless World, Jul. 1969, pp. 328-330.
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Erdi. G., "A 300 V/.mu.s Monolithic Voltage Follower", 1979 IEEE International Solid-State Circuits Conference, FAM 17.6, Feb. 1979, pp.238-239.
Berard, Jr. C. A.
Mullins James B.
Rasmussen P. J.
RCA Corporation
Whitacre E. M.
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