JPS6032821U

JPS6032821U - current mirror circuit

Info

Publication number: JPS6032821U
Application number: JP12509483U
Authority: JP
Inventors: 孝尾形
Original assignee: 三菱電機株式会社
Priority date: 1983-08-10
Filing date: 1983-08-10
Publication date: 1985-03-06
Also published as: JPH0138979Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の電流ミラー回路の一例を示す回路図、第
２図はこの考案による電流ミラー回路の一実施例を示す
回路図、第３図はこの考案の他の実施例を示す回路図で
ある。１・・・・・・基準電流供給用トランジスタ、２・・・
・・・出力トランジスタ、３・・・・・・基準電流源、
４・・・・・・駆動トランジスタ、５・・・・・・電源
端子、６・・・・・・負荷抵抗、７・・・・・・出力端
子、８・・・・・・レベルシフトトランジスタ、９・・
・・・・ベースバイアス電圧供給用定電流源、ｌｅａ、
１０ｂ・・・・・・ダイオード。Fig. 1 is a circuit diagram showing an example of a conventional current mirror circuit, Fig. 2 is a circuit diagram showing an embodiment of the current mirror circuit according to this invention, and Fig. 3 is a circuit diagram showing another embodiment of this invention. It is. 1...Reference current supply transistor, 2...
...Output transistor, 3...Reference current source,
4... Drive transistor, 5... Power supply terminal, 6... Load resistor, 7... Output terminal, 8... Level shift transistor , 9...
...constant current source for base bias voltage supply, lea,
10b...Diode.

Claims

[Scope of utility model registration request]

comprising a plurality of transistors whose bases are commonly connected, a drive transistor that supplies a drive current to the bases of the transistors, and a reference current supply means that supplies a reference current to the collector of one of the plurality of transistors; In a current mirror circuit configured to take out a current equal to or a certain magnification of a reference current from the collector of an output transistor other than the reference current supply side of the plurality of transistors whose bases are commonly connected, an emitter is connected to the collector of the output transistor. and a constant current source that supplies a base potential to the base of the level shift transistor, and by applying a DC bias potential to the base potential of the level shift transistor, a reference A current mirror circuit characterized in that the collector potential of a current supply side transistor and the collector potential of a plurality of mirror circuit outputs connected to each other are set at the same level.