Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Reexamination Certificate
2011-06-28
2011-06-28
Mai, Lam T (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
C341S155000
Reexamination Certificate
active
07969343
ABSTRACT:
An analog-to-digital converter circuit includes: a capacitor array including a plurality of first capacitors, each having a first terminal connecting to a common node and having a capacitance represented by the nth power of 2 (2n) on the basis of the smallest of the capacitances of the first capacitors=1; a second capacitor for contributing to attenuation of the voltage on the common node; a switch array, each switch of the switch array supplying and disconnecting one of a first reference voltage, a second reference voltage, and the voltage of an input signal to and from a second terminal of an associated one of the first capacitors; a second switch supplying and disconnecting a third reference voltage to and from the common node; a comparator comparing a voltage on the common node with the third reference voltage; and a control circuit controlling the first switches and the second switch.
REFERENCES:
patent: 4908620 (1990-03-01), Fujisawa
patent: 6400302 (2002-06-01), Amazeen et al.
patent: 6707403 (2004-03-01), Hurrell
patent: 6882295 (2005-04-01), Leung
patent: 6950052 (2005-09-01), Leung
patent: 6954167 (2005-10-01), Leung
patent: 6985101 (2006-01-01), Leung et al.
patent: 7188199 (2007-03-01), Leung et al.
patent: 7230561 (2007-06-01), Lee
patent: 7233273 (2007-06-01), Tachibana et al.
patent: 7741981 (2010-06-01), Wan et al.
patent: 7834796 (2010-11-01), Xu et al.
patent: 2007-142863 (2007-06-01), None
Fujitsu Limited
Fujitsu Patent Center
Mai Lam T
LandOfFree
Successive approximation analog-digital converter circuit... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Successive approximation analog-digital converter circuit..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Successive approximation analog-digital converter circuit... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2731823