December 2017
Intermediate to advanced
926 pages
22h 26m
English
12.3.3 Vector feedback DEM DAC

FIGURE 12.85Vector feedback ESL.
An alternative element selection approach with the advantage of providing a high-order spectral shaping of the DAC noise can be based on the vector feedback structure [3, 44], which uses a sorting mechanism to determine the DAC unit elements to be selected for each conversion.
The block diagram of a vector feedback ESL is depicted in Figure 12.85.
It consists of a vector quantizer, a min block (or a smallest-element sorter), two adders, and a filter. The vector feedback ESL processes a signal vector, whose length is equal to the number of DAC unit elements, that is, 2B − 1 for a ...
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