Current mirror circuit

Details Current mirror circuit Current mirror circuit

1987-07-06

1988-10-18

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

323316, 330288, H03F 345

Patent

active

047790598

ABSTRACT:
A current mirror circuit including an operational amplifier connected to transistors of the current mirror circuit such that operating points of the transistors, that is, the emitter electrodes, are at the same potential. Thus, resistors connected between those emitters and an output of the operational amplifier may be increased even when the transistors are implemented in an integrated circuit. As a result, even with this configuration, current mirror accuracy may be improved.

REFERENCES:
patent: 3922614 (1975-11-01), Van de Plassche

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