Nonlinearity of a data-acquisition system with interleaving/multiplexing

被引：0

作者：

Univ of Coimbra, Coimbra, Portugal ^{[1
]}

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来源：

IEEE Trans Instrum Meas | / 6卷 / 1274-1279期

关键词：

Computer simulation - Data acquisition - Mathematical models - Multiplexing;

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摘要：

The study of differential nonlinearities (DNL) and integral nonlinearities (INL) of a high-speed data acquisition system using interleaving/multiplexing yields a theoretical expression for both errors, showing that they are smaller than the DNL and INL errors for each analog-to-digital converter (ADC) channel. Both experimental and computer-simulated data reveal very good agreement with the theoretical results. It is also shown that for this type of interleaved acquisition system, that has a time-dependent transfer characteristic, the effective number of bits cannot be evaluated via histogram testing.

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