Current mirror circuit arrangement

Details Current mirror circuit arrangement Current mirror circuit arrangement

1982-06-24

1984-02-07

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

323315, H03F 310

Patent

active

044306245

ABSTRACT:
A current mirror circuit arrangement wherein an output current is provided by an output transistor and coupled between the base electrode of the output transistor and a reference potential is a series combination of a resistor and a diode. Signals are fed to the base electrode of the output transistor from a voltage supply via an emitter follower circuit and a resistor is connected across the diode so as to share current with the diode to increase its impedance at low current values and consequently to improve the overall linearity of the output current input voltage characteristic.

REFERENCES:
patent: 3651346 (1972-03-01), Limberg
patent: 4228404 (1980-10-01), Widlar
patent: 4329639 (1982-05-01), Davis

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