Current mirror circuit

Details Current mirror circuit Current mirror circuit

2006-03-08

2008-09-16

Choe, Henry K (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

C323S315000

Reexamination Certificate

active

07425870

ABSTRACT:
There is disclosed a current mirror circuit comprising a first transistor having a first electrode connected to a first potential, a second electrode connected to a second potential lower than the first potential, and a third electrode connected to a third potential higher than the second potential, a second transistor having a first electrode connected to the first potential and the first electrode of the first transistor, and a second electrode connected to the second potential, an operational amplifier having a high-potential input connected to the third potential and the third electrode of the first transistor, and a low-potential input connected to the third electrode of the second transistor, and a third transistor having a first electrode connected to an output of the operational amplifier, a second electrode connected to the low-potential input and the third electrode of the second transistor, and a third electrode used as an output terminal.

REFERENCES:
patent: 5986507 (1999-11-01), Itakura et al.
patent: 6064267 (2000-05-01), Lewyn
patent: 6194967 (2001-02-01), Johnson et al.
patent: 6587000 (2003-07-01), Oikawa
patent: 11214934 (1999-08-01), None
patent: 2000114891 (2000-04-01), None
Charlon, O., and W. Redman-White, “Ultra High-Compliance CMOS Current Mirrors for Low Voltage Charge Pumps and References,”Proceedings of the 30th European Solid-State Circuits Conference, Leuven, Belgium, Sep. 21-23, 2004, pp. 227-230.

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