METHOD AND APPARATUS FOR SUPPRESSING TONES INDUCED BY CYCLIC DYNAMIC ELEMENT MATCHING (DEM) ALGORITHMS

摘要

A kind of method and apparatus are disclosed,For executing dynamic cell matching (DEMs 12/14). The multiple digital values of this method operation input, and for each value, multiple N number of elements are respectively driven to generate multiple N number of signal plans. Multiple signals (12) are generated with average changing with time using discrete component. This method further rearranges (14) signal, to inhibit to generate unwanted tone. Periodic rearrangement occurs, i.e., is only input to second level DEM (14) from main DEM (12) in enable signal. The main DEM of the signal of generation (12) is preferably based on randomization or pseudorandom permutation by second level DEM (14) with periodic rearrangement is performed using circulation DEM algorithms.