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DAISY: A simulation-based high-level synthesis tool for delta-sigma modulators

By K. Francken, P. Vancorenl and G. Gielen


Abstract —An integrated tool called DAISY (Delta–Sigma Analysis and Synthesis) is presented for the high–level synthesis of 16 modulators. The approach determines both the optimum modulator topology and the re-quired building block specifications, such that the system specifications – mainly accuracy and signal bandwidth – are satisfied at the lowest possi-ble power consumption. A genetic–based differential evolution algorithm is used in combination with a fast dedicated behavioral simulator that in-cludes the major nonidealities of the building blocks to realistically analyze and optimize the modulator performance. Experimental results illustrate the effectiveness of the approach. Also, an overview of optimized topolo-gies as a function of the modulator specifications for a wide range of values shows the capabilities and performance range covered by the tool. I

Year: 2000
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