Method and apparatus for digital to analog conversion with minim

Details Method and apparatus for digital to analog conversion with minim Method and apparatus for digital to analog conversion with minim

1992-12-04

1994-06-14

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341144, H03M 166

Patent

active

053214013

ABSTRACT:
A digital to analog converter (10) and method is provided in which a plurality of digital to analog converter cells (16) generate an analog output signal based on a digital input signal, the cells being characterized by a switching threshold. An error signal circuit (22) generates a control voltage signal for controlling a first variable delay register (12). Signals latched by the first variable delay register (12) are characterized by rising and falling edges, and the first variable delay register (12) is controlled by the control voltage signal such that the rising and falling edges cross the switching threshold at substantially the same time.

REFERENCES:
patent: 3582943 (1971-06-01), Weller
M. P. Wilson et al., "Spurious Reduction Techniques for Direct Digital Synthesis", Paper presented at Direct Digital Synthesis Conference, University of Bradford, England, Nov. 19, 1991.
Van Andrews et al., "A Monolithic GaAs DDS For A Digital Radio Application", Digest of Papers, Government Microcircuit Applications Conference, 1992, pp. 431-434.
"High Speed DAC Implementations", Paper presented at High Speed Design Seminar. 1989.
David Buchanan, "Choose DACs For DDS System Applications", Microwaves & RF, Aug. 1992, pp. 89-98.
Robert J. Zavrel, Jr., "Alias and Spurious Responses in DDS Systems", Stanford Telecom, ASIC & Custom Products Group, Mar., 1990, pp. 7-10.
Kenji Maio et al., "A 500-MHz 8-Bit D/A Converter" IEEE Journal of Solid-State Circuits, vol. SC-20, No. 6, Dec. 1985.

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