Method for successive approximation A/D conversion

Details Method for successive approximation A/D conversion Method for successive approximation A/D conversion

1985-08-30

1986-10-28

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347CC, H03M 108

Patent

active

046201793

ABSTRACT:
A method of successive approximation A/D conversion employing an N bit internal D/A converter and an N bit SAR is provided wherein the first X bits are approximated to within less than the desired accuracy for N bit successive approximation while the last Y bits are approximated to within at least the desired accuracy for N bit successive approximation. After the Xth bit approximation, the A/D converter may be allowed sufficient time to settle to within the desired accuracy for N bit approximation during an error correction stage which increments or decrements the digital signal for the first X bits.

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Schulz "Analog-to-Digital Converter with Noise Rejection" IBM Technical Disclosure Bulletin, vol. 15 No. 6, Nov. 1972, pp. 2007-2008.

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