DEM (DYNAMIC ELEMENT MATCHING)

摘要

PROBLEM TO BE SOLVED: To provide DEM which can implement an accurateΔΣtype AD type converter. SOLUTION: Algorithm of the DEM used for aΔΣmodulator shifts, by a predetermined number A, an element that comes into use in a DA converter regardless of the output values of a quantizer constituting theΔΣmodulator and the DA converter. A is 1 or a positive integer satisfying äA<2N/4} with respect to the number N of bits of the DA converter (N is an integer≥3). COPYRIGHT: (C)2011,JPO&INPIT