Autors: Pandiev, I. M.
Title: Analysis and Behavioral Modeling of Monolithic Digital Potentiometers
Keywords: Computer simulation, digital potentiometers, mixed analog digital integrated circuits (ICs), semiconductor device modeling, very-high hardware description language (VHDL)- analog and mixed signal (AMS)

Abstract: This paper focuses on analysis and modeling of complementary metal-oxide semiconductor (CMOS) resistive digital-to-analog converter (RDAC) potentiometers based on string digital-to-analog converter or Kelvin divider architecture. The model is developed by using very-high hardware description language (VHDL) analog and mixed-signal language, and accurately simulates basic static and dynamic parameters, integral nonlinearity, terminal voltage operating range, and leakage current at various operational modes for linear and nonlinear changing of the middle point (wiper). The model is implemented in the SystemVision simulation platform, using a style combining structural and behavioral elements. For verification of the model parameters are extracted for single-stage AD5235 and triple-stage AD5143 RDACs from analog devices as examples. The workability of the proposed models is validated by simulation and experimental testing of sample digitally controlled analog circuits.

References

    Issue

    IEEE Transactions on Industry Applications, vol. 54, issue 1, pp. 416-425, 2018, United States, IEEE Industry Applications Society, ISSN 0093-9994

    Copyright IEEE Industry Applications Society

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    Вид: статия в списание, публикация в издание с импакт фактор