BENEFITS WITH TRUNCATED GAUSSIAN NOISE IN ADC HISTOGRAM TESTS

Niclas Björsell, Peter Händel

Abstract

One method to characterize ADCs is to use a histogram, where Gaussian noise may be used as stimulus signal. However, a Gaussian noise signal that excites all transition levels also generates input values outside working range of the ADC. Modern signal generators can generate arbitrary signals. Hence, excluding undesired values outside the ADC full scale can minimize test sequences. Truncating the signal to the working range gives further advantages, which are explored in this paper. The statistical properties is theoretically evaluated and compared. It is shown that accuracy increases for a fixed sample length and that variation over transition levels decrease.

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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