Instituto de Telecomunicações and Department of Electrical and Computer Engineering, Instituto Superior Técnico, University of Lisbon, Portugal.
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ORCID Details
F. Corrêa Alegria: 0000-0003-0854-489X
World Journal of Advanced Engineering Technology and Sciences, 2026, 20(02), 184–191
Article DOI: 10.30574/wjaets.2026.20.2.0407
Received on 01 July 2026; revised on 17 August 2026; accepted on 19 August 2026
This paper studies how to choose the input and sampling frequencies, together with the number of samples to acquire, so that coherent sampling is achieved. This choice matters when analog-to-digital converters (ADCs) are tested with the histogram method, the discrete Fourier transform (DFT) method or the sine-fitting method.
It is shown that a trade-off exists between how closely the actual frequencies can be kept to the desired ones and the duration of the test, which is governed by the number of acquired samples.
Several algorithms are presented and compared in terms of their complexity, advantages and drawbacks.
Analog-to-digital converter; ADC testing; Coherent sampling; Histogram test; Frequency errors; Number of samples; Cumulative histogram
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F. Corrêa Alegria. CHOOSING THE NUMBER OF SAMPLES TO USE IN THE HISTOGRAM TEST OF ADCS. World Journal of Advanced Engineering Technology and Sciences, 2026, 20(02), 184–191. Article DOI: https://doi.org/10.30574/wjaets.2026.20.2.0407