A High-Level Simulation and Synthesis Environment for ΔΣ Modulators.

An approach is presented for the high-level simulation and synthesis of discrete-time δΣ modulators based on a simulation-based optimization strategy. The high-level synthesis approach determines both the optimum modulator topology and the required building block specifications, such that the system specifications—mainly accuracy (dynamic range) and signal bandwidth—are satisfied at the lowest possible power consumption. A genetic-based differential evolution algorithm is used in combination with a fast dedicated behavioral simulator to realistically analyze and optimize the modulator performance. The approach has been implemented in a tool called Daisy (Delta-Sigma-Analysis and Synthesis). Experimental results are shown for both the analysis and synthesis capabilities, illustrating the effectiveness of the approach. The selected range of optimized ΔΣ modulator topologies as a function of the modulator specifications for a wide range of values indicate the capabilities of and the performance range covered by the tool. [ABSTRACT FROM AUTHOR]