Correction of static mismatch errors in a D/A converter

Details Correction of static mismatch errors in a D/A converter Correction of static mismatch errors in a D/A converter

2008-05-27

2008-05-27

Nguyen, Khai M. (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S120000, C341S144000, C341S145000

Reexamination Certificate

active

07378998

ABSTRACT:
Methods, articles of manufacture and systems for the correction of static mismatch errors in D/A converters, where an input word, being the digital representation of an analog input signal, is divided into one most significant part, msb-word, and one least significant part, lsb-word, where msb-word is represented by msb-bits and lsb-word is represented by lsb-bits. Correction is performed by setting the effective weight of the least significant msb-bit to be less than the total sum of all lsb-bits, implementing a first look up table, LUT1, containing the most significant part of the error, so that a corrected msb-word, c-msb-word, would be equal to the msb-word plus a value in LUT1representing the msb-word, and implementing a second look up table, LUT2, containing the least significant part of the error, so that a first corrected output, c1-output, would be equal to c-msb-word plus a value in LUT2representing the c-msb-word added to the lsb-word.

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European Patent Office Search Report dated Feb. 24, 2006, (3 pages).

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