Testing ADCs for static and dynamic nonlinearities -killing two birds with one stone

Abstract

Traditionally, static linearity and dynamic distortion tests are performed separately for ADCs. To this end, a low-frequency sinewave is histogrammed to measure static Integral Nonlinearity, and a high-frequency sine-wave is sampled for FFT processing to measure dynamic distortions and dynamic range. We propose to use a model-based technique to extract both static and dynamic nonlinearities from a single data record of a sampled high-frequency sine-wave. This saves test time as the ADC converts fewer samples.

Publication Title

4th IMEKO TC4 Conference on Advanced A/D and D/A Conversion Techniques and Their Applications and the 7th Workshop on ADC Modelling and Testing 2002

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