Differential current mirror circuit

Details Differential current mirror circuit Differential current mirror circuit

2008-08-15

2010-11-16

Nguyen, Khanh V (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S253000

Reexamination Certificate

active

07834694

ABSTRACT:
A differential current mirror circuit includes: a first branching unit that branches current through a first current input terminal to a first current path and a second current path; a second branching unit that branches current through a second current input terminal to a third current path and a fourth current path; and a current mirror that copies current. The current copied by the current mirror is a combination of the current flowing through the second current path and the fourth current path and removal of the in-phase component from current through the first current path enables only the differential component flowing through the first current path to flow to a first current output terminal. Similarly, the in-phase component from current through the third current path is removed, enabling only the differential component flowing through the third current path to flow to a second current output terminal.

REFERENCES:
patent: 5198781 (1993-03-01), Kusakabe
patent: 6605998 (2003-08-01), Kimura
patent: 7119616 (2006-10-01), Benzer
patent: 4-76941 (1992-03-01), None
patent: 6-140844 (1994-05-01), None
patent: 2610361 (1997-02-01), None

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