Simple Evaluation of the Nonlinearity Signature of an ADC Using a Spectral Approach
(a) Comparison between two AD INL Histogram estimations: in thin (blue) line the one estimated with very few samples (the two registers acquired to apply the new method). In thick (black) line the real INL, (no gain effect has been included).
(b) Overlapped AD INL estimations: the estimated using the spectral approach and (12), and the real INL (gain effects are included).
(c) Difference between the above INL signatures in (b).
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