Multi-level feed-back digital-to-analog converter using a...

Details Multi-level feed-back digital-to-analog converter using a... Multi-level feed-back digital-to-analog converter using a...

2011-08-09

2011-08-09

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S143000, C341S144000

Reexamination Certificate

active

07994958

ABSTRACT:
A multi-bit digital-to-analog converter has a reference voltage generator generating a reference voltage with an offset voltage; a switched capacitor stage for generating a plurality of output voltages; and a switching sequencer controlling the switched capacitor stage operable to generate switching patterns for each output voltages, wherein each pattern has a charge phase and a transfer phase, and wherein for at least one output voltage the switching sequencer provides two switching patterns wherein each switching pattern contributes an offset of opposite polarity.

REFERENCES:
patent: 6462612 (2002-10-01), Roh et al.
patent: 6909388 (2005-06-01), Quiquempoix et al.
patent: 7102558 (2006-09-01), Deval
patent: 2004/0141562 (2004-07-01), Plisch et al.
patent: 2005/0117269 (2005-12-01), None
patent: 2006/0023355 (2006-03-01), None
patent: 2008/0014246 (2008-01-01), None
patent: WO 2008/014246 (2008-01-01), None
International PCT Search Report and Written Opinion, PCT/US2009/061617, 14 pages, Mailed May 25, 2010.

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