Differential amplifier offset voltage minimization...

Details Differential amplifier offset voltage minimization... Differential amplifier offset voltage minimization...

2007-09-11

2007-09-11

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S002000, C330S253000

Reexamination Certificate

active

11203860

ABSTRACT:
Offset voltages in differential amplifiers are minimized by controlling compensation currents through the load impedances of the amplifiers. The currents are varied while sensing the polarity of the offset voltage. When the polarity changes, the current values are latched to keep the offset voltage at a minimum.

REFERENCES:
patent: 6459335 (2002-10-01), Darmaswaskita et al.
patent: 6515464 (2003-02-01), Darmaswaskita et al.
patent: 6714886 (2004-03-01), Sung et al.
patent: 6737913 (2004-05-01), Goldenberg
patent: 6831521 (2004-12-01), Abidin et al.
patent: 7095281 (2006-08-01), Zipper et al.
patent: 2004/0227567 (2004-11-01), Llewellyn
patent: 56023049 (1981-03-01), None

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