Ewout Martens

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A new approach for automated synthesis of analog and mixed-signal systems is presented. The heterogeneous genetic optimization strategy starts from a functional description and evolves a simple design solution in a strict top-down design process to a complex one that fulfills multiple objectives. Transformations of both architecture and parameters are(More)
Circuit-level simulation of /spl Delta//spl Sigma/ modulators is a time-consuming task, taking one or more days for meaningful results. While there are a great variety of techniques and tools that speed up the simulations for discrete-time /spl Delta//spl Sigma/ modulators, there is no rigorous methodology implemented in a tool to efficiently simulate and(More)
— Circuit–level simulation of modulators is a time– consuming task (taking one or more days for meaningful results). While there are a great variety of techniques and tools that speed up the simulations for discrete–time (DT) modulators, there is no rigorous methodology implemented in a tool to efficiently simulate and design the continuous– time (CT)(More)
In this paper a formal model of computation is proposed to perform time-efficient simulations of continuous-time ¿¿ modulators. It is based on the state-space representation of the modulator. The formal character of the model makes it suited for implementation in an arbitrary language. It is explained how different models of the building blocks can easily(More)
— Increasing complexity of modern mixed-signal chips requires systematic analysis and design methodologies. High-level formal models are a key ingredient for the high-level synthesis of systems-on-chip. This paper proposes a formal description of continuous-time ∆Σ modulators. The presented model makes it straightforward to analyze the converter at(More)