Folding A/D converter

Details Folding A/D converter Folding A/D converter

1996-08-28

1998-11-10

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341155, H03M 136

Patent

active

058350470

ABSTRACT:
In a folding A/D converter, a comparison part CPM provides a plurality of comparison signals Sc1 . . . Sc9 in response to an input signal Si. The transients in the comparison signals Sc1 . . . Sc9 are mutually shifted and substantially overlap. Because of the overlap, only a relatively small input signal variation is needed to pass all the transients. A limiting part LIM effectively selects portions of the transients. A combining part CBM effectively multiplexes these selected portions into a folding signal Sf. The selection by the limiting part LIM prevents distortion of the folding signal Sf, despite the overlap.

REFERENCES:
patent: 5157397 (1992-10-01), Vernon
patent: 5329279 (1994-07-01), Barbu et al.
"An 8-bit Video ADC Incorporating Folding and Interpolation Techniques", by R.E.J. van de Grift et al, IEEE Journal of Solid-State Circuits, vol. SC-22, No. 6, Dec. 1987, pp. 944-953.

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