|Autors: Pandiev, I. M.|
Title: Behavioral modeling of CMOS digital potentiometers using VHDL-AMS
Keywords: Circuit simulation, Digital potentiometers, VHDL-AMS
Abstract: This paper focuses on analysis and behavioral modeling of CMOS RDAC (redundant disk array controller) potentiometers, using string DAC (digital-to-analog converter) or Kelvin divider architecture. The model is developed by using VHDL-AMS language and accurately reflects the basic DC and AC transfer characteristic at various modes of operation for linear and nonlinear increment/decrement of the wiper. The created model is coded by using a style, combining structural and behavioral elements. The structural description is the net-list of the model and the behavioral description consists of simultaneous statements and some event-driven techniques to represent the behavior of the real devices. For verification check the model parameters are extracted for the single-stage AD5235 and triplestage AD5143 RDACs from Analog Devices as examples. The workability of the proposed models is verified by simulation and experimental testing of sample electronic circuits.
1. Sotner, R., Domansky, O., Langhammer, L., Petrzela, J. "Comparison of simple design methods for voltage controllable resistance," Proceedings of the 2020 30th International Conference Radioelektronika, ISBN: 978-172816469-4, RADIOELEKTRONIKA 2020, DOI: 10.1109/RADIOELEKTRONIKA49387.2020.9092366 - 2020 - в издания, индексирани в Scopus или Web of Science
Вид: пленарен доклад в международен форум, публикация в реферирано издание, индексирана в Scopus