Title:
LOW DISTORTION DIGITAL TO ANALOG CONVERTER AND DIGITAL SIGNAL SYNTHESIZER SYSTEMS
Document Type and Number:
WIPO Patent Application WO2005011121
Kind Code:
A3
Abstract:
The present invention is a digital to analog converter circuit that provides significantly lower distortion than achieved by digital to analog converter circuits having comparable speed and resolution utilizing the present art. The present invention provides linear or higher order transitions between clock transition time points rather than step transitions used in the present art. Distortion reduction can exceed 30 dB in the embodiment with linear sample-tosample transitions and greater in alternate embodiments with non-linear transitions. In other embodiments, the present invention can provide low distortion at resolutions from 16 to 24 bits or more at sample rates typical of high-speed 8-bit devices of the present art.
Application Number:
PCT/US2004/023785
Publication Date:
November 24, 2005
Filing Date:
July 23, 2004
Export Citation:
Assignee:
THUNDER CREATIVE TECHNOLOGIES (US)
WASHBURN ROBERT D (US)
MCCLANAHAN ROBERT F (US)
WASHBURN ROBERT D (US)
MCCLANAHAN ROBERT F (US)
International Classes:
H03M1/66; H03M; (IPC1-7): H03M1/66
Foreign References:
| US6067327A | 2000-05-23 | |||
| US5162798A | 1992-11-10 | |||
| US5191332A | 1993-03-02 | |||
| US5627538A | 1997-05-06 | |||
| US6693987B1 | 2004-02-17 |
Other References:
See also references of EP 1652302A4
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