Current-mirror circuit

Details Current-mirror circuit Current-mirror circuit

2011-04-26

2011-04-26

Behm, Harry (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

C327S543000

Reexamination Certificate

active

07932712

ABSTRACT:
In a cascode current-mirror circuit which reproduces a reference current generated by a current source and outputs the reproduced reference current: the control electrodes of first and second transistors are connected; a third transistor is cascode-connected to the first transistor through a current electrode; a fourth transistor is cascode-connected to the second transistor; the control electrodes of the third and fourth transistors are connected; the control electrode of a fifth transistor is connected to the control electrode of the first transistor and another current electrode of the third transistor, and is to be connected to the current source; and a bias-voltage generation circuit generates bias voltages for the third and fourth transistors on the basis of voltages of the control electrodes of the first and the fifth transistors.

REFERENCES:
patent: 4550284 (1985-10-01), Sooch
patent: 5359296 (1994-10-01), Brooks et al.
patent: 5952884 (1999-09-01), Ide
patent: 5966005 (1999-10-01), Fujimori
patent: 6211659 (2001-04-01), Singh
patent: 6680605 (2004-01-01), Chen et al.

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