Operational amplifier with less offset voltage

Details Operational amplifier with less offset voltage Operational amplifier with less offset voltage

2006-05-12

2008-08-05

Choe, Henry K (Department: 2817)

Amplifiers

With periodic switching input-output

C330S051000

Reexamination Certificate

active

07408402

ABSTRACT:
An operational amplifier includes a differential pair section; a load section configured to function as active load of the differential pair section; and a switch section configured to switch supply of a differential input signal to the differential pair section and to switch connection of outputs of the differential pair section to the load section. The switch section is operated to cancel an offset voltage of the operation amplifier.

REFERENCES:
patent: 5311145 (1994-05-01), Huijsing
patent: 6586990 (2003-07-01), Udo et al.
patent: 7081792 (2006-07-01), Kasai et al.
patent: 7116161 (2006-10-01), Nakahira
patent: 3520106 (1994-11-01), None
patent: 11-249623 (1999-09-01), None

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