Highly accurate digital to analog converter

Details Highly accurate digital to analog converter Highly accurate digital to analog converter

2005-01-11

2005-01-11

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S144000, C341S143000

Reexamination Certificate

active

06842134

ABSTRACT:
Disclosed is a D/A converter including a DC processing circuit, an analog switching device, a bootstrap circuit, and a third order low-pass filter. The boots trap circuit substantially reduces loading created by the low-pass filter circuit and acting on the switching device. Cross-over discontinuities in the continuous analog signal are reduced by interposing between each two successive pulses a cross-over correction pulse having opposite polarity and a predetermined fixed pulse-width. The D/A converter provides fast and accurate response over a long period of time.

REFERENCES:
patent: 4099109 (1978-07-01), Abbondanti
patent: 5617058 (1997-04-01), Adrian et al.
patent: 5754072 (1998-05-01), Mazzetti
patent: 6486816 (2002-11-01), Seymour
patent: 6522278 (2003-02-01), Rhode et al.
patent: 6563447 (2003-05-01), Schofield
patent: 6727832 (2004-04-01), Melanson

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