Towards a specification notation for high-level synthesis of mixed-signal and analog systems

Doboli, A.; Vemuri, Ranga

doi:10.1109/bmas.2000.888373

Cited by 1 publication

(2 citation statements)

References 14 publications

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“…The synthesis goal was to minimize the mismatch between the AC response of the implementation and the ideal AC response given as an input. The VHDL-AMS description of the filter SFG is presented in Doboli [2000]. Figure 17(a) shows the SFG for the filter.…”

Section: Fifth Order State Variable Filtermentioning

confidence: 99%

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A two-layer library-based approach to synthesis of analog systems from VHDL-AMS specifications

Doboli

Dhanwada

Nunez-Aldana

et al. 2004

ACM Trans. Des. Autom. Electron. Syst.

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This paper presents a synthesis methodology for analog systems described using VHDL-AMS language. Synthesis produces net-lists of analog components that are selected from a library, and sized so that specified objectives (like AC response, signal to noise ratio, dynamic range, area) are optimized. The gap between abstract specifications and implementations is bridged using a two-layered methodology. The first layer is architecture generation. The second layer is component synthesis and constraint transformation. Architecture generation employs the branch-and-bound algorithm to create architectural alternatives for a system. Component synthesis and constraint transformation use a directed interval based genetic algorithm that operates on parameter ranges. The performance estimation engine embeds technology process parameters, SPICE models for basic circuits, and symbolic composition equations for basic structural configurations. The paper discusses the VHDL-AMS subset for synthesis. The subset offers the composition semantics. As a result, specifications offer sufficient insight into the system structure to allow automated architecture generation. To justify the flexibility of the methodology, the paper presents results for three case studies, a signal conditioning system, a filter, and an analog to digital converter. Experiments show that constraint-satisfying designs can be synthesized in a short time, at a low cost, and without requesting broad knowledge on analog circuits.

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Section: Fifth Order State Variable Filtermentioning

confidence: 99%

“…They are also useful to express structural regularities present in a system. Structural regularity helps in setting up compact performance models and simplifying architecture generation [Doboli 2000]. …”

Section: Vhdl-ams [Ieee;mentioning

confidence: 99%