Abstract
This paper compares the advantages and disadvantages of multi-tone testing with single-tone (sine-wave) testing and proposes the use of pseudo random binary sequence (PRBS) based multi-tone test signals. Single-tone testing is convenient as a pure test signal as it enables the practical performance of analogue to digital converter (ADC) to be compared with its theoretical value at one frequency and amplitude. ADCs exhibit non-linearity that depends on the rate of change and amplitude of the signal and on the amplitude probability density function (APDF) of the test signal. Tests that are sensitive to these effects will therefore assist manufacturers in improving their designs, and users in selecting the best device for their application. A test procedure that enables conventional ADC dynamic test parameters to be measured with the PRBS test signal is described.
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