Adaptive Filtering For ADC Spectral Analysis

D. Dallet, Ch. Rebai, V. L. Boun, D. Elfersi, A. Merino, Ph. Marchegay

Abstract

In this paper, we present an adaptive filter structure for Analog to Digital Converters (ADC) spectral domain analysis. A digital filter bank is commonly used to decompose an ADC output signal into its main spectral components. However, this method requires a priori accurate knowledge of the output characteristics. It implies that a slightly deviation from the calculated resonant frequency results in a drastic decrease in the parameters estimation precision. In order to solve this problem, we propose a promising adaptive structure for a Built-In-Self-Test (BIST) approach for ADC and Mixed-Signal Integrated Circuits (IC).

Keywords

ADC Characterization, Filter Bank, Adaptive Filter

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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