DYNAMIC BEHAVIOR MODELS OF ANALOG TO DIGITAL CONVERTERS AIMED FOR POST-CORRECTION IN WIDEBAND APPLICATIONS

Niclas Björsell, Peter Händel

Abstract

In this paper a dynamic behavior model of analog to digital converters is proposed. The model is aimed for post correction in wideband applications. The suggested post correction method is a combination of look up tables and model based correction.<BR />
The model consists of three components. The first is a component represented by a Hammerstein model; that is a static nonlinearity followed by a time invariant linear filter. The second component is a nonparametric model caused by significant deviation from the characterized integral nonlinearity and the output from the Hammerstein model. The third component contains of the remaining deviation and is considered as a random model error.<BR />
Results from simulations verify that the examined ADC can be described by an ordinary Hammerstein model and a static look-up table.

Keywords

Analog to digital converters, modeling, wideband applications

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PWC-2006-TC4-IWADC-010u.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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