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50 Ω driver circuits for digital signals: Revised test board and new measurement data
1Hochschule München University of Applied Sciences, Department of Mechanical, Automotive and Aeronautical Engineering, Lothstr. 34, 80335 Munich, Germany.
Abstract:
In "Evaluation of 50 Ω driver circuits for digital signals based on oscilloscope measurements" (Heliyon, Volume 7, Issue 7, July 2021) different 50 Ω driver circuits for digital signals were compared and evaluated. Notably, the BJT-based discrete push-pull driver circuit showed a rather modest performance. It is also questionable whether the fast-switching signals of the individual driver circuits were reproduced completely and correctly with the PicoScope 3206A oscilloscope used in that study, as its sampling rate is quite low. For these reasons, the experiments were continued, several improvements were made to the test board. A new driver circuit was implemented on the test board, too. New measurement data were recorded both with a Tektronix MDO3024 oscilloscope and for comparison with the previously used PicoScope 3206A. The following dataset is made available: The revised test board (PCB layout and schematic design files), oscilloscope measurement data in CSV format, Python scripts for graphical representation of the CSV data.
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