Differential amplifier circuit having offset adjustment circuit

Details Differential amplifier circuit having offset adjustment circuit Differential amplifier circuit having offset adjustment circuit

2011-02-15

2011-02-15

Choe, Henry K (Department: 2817)

Amplifiers

With periodic switching input-output

C330S253000

Reexamination Certificate

active

07888995

ABSTRACT:
A differential amplifier circuit includes an offset adjuster circuit for varying the active load to adjust the offset caused by the differential pair. The differential amplifier circuit includes fine adjustment cell sections including a plurality of transistors having the substantially same size, and shift cell sections including transistors, whose transistor size is larger than the transistors of the fine adjustment cell sections.

REFERENCES:
patent: 6388521 (2002-05-01), Henry
patent: 6586990 (2003-07-01), Udo et al.
patent: 6696894 (2004-02-01), Huang
patent: 6930545 (2005-08-01), Kwan et al.
patent: 7078968 (2006-07-01), Gaeta et al.
patent: 7242251 (2007-07-01), Boos
patent: 8-213855 (1996-08-01), None

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