发明名称 |
Current mirror circuit |
摘要 |
A current mirror circuit in which error between input current and output current is small and which can operate with low voltage. First and second current mirror transistors of a first conductivity type have their emitters each connected to a power supply, their bases connected together and their collectors connected to an input terminal and an output terminal respectively. A current amplification factor compensating third transistor of the first conductivity type is provided which has its emitter connected to the bases of the first and second transistors and its collector connected to a reference potential point. A fourth transistor of a second conductivity type is provided for level shifting. This transistor has its collector connected to the emitters of the first and second transistors, its emitter connected to the base of the third transistor and its base connected to the collector of the first transistor. A current source is connected between the third transistor and the reference potential point.
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申请公布号 |
US4462005(A) |
申请公布日期 |
1984.07.24 |
申请号 |
US19820387750 |
申请日期 |
1982.06.11 |
申请人 |
TOKYO SHIBAURA DENKI KABUSHIKI KAISHA |
发明人 |
KUSAKABE, HIROMI;YOSHIDA, YOSHIHIRO |
分类号 |
H03F3/343;G05F3/26;H03F3/34;(IPC1-7):H03F3/04 |
主分类号 |
H03F3/343 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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