SEVERAL APPROACHES TO ADC TRANSFER FUNCTION APPROXIMATION AND THEIR APPLICATION FOR ADC NON-LINEARITY CORRECTION
Journal Title: Metrology and Measurement Systems - Year 2008, Vol 15, Issue 4
Abstract
The performance of current electronic devices is mostly limited by analog front-end and analog-to-digital converter's (ADC) actual parameters. One of the most important parameters is ADC nonlinearity. The correction of this imperfection can be accomplished in the output data but only if the nonlinearity is well characterized. Many approaches to ADC characterization have been proposed in scientific articles in the last several years. In this paper three different approximations of ADC low-frequency non-linearity (common polynomials, Chebyshev polynomials and Fourier series) were analyzed and the practical applicability, approximation accuracy and noise sensitivity were investigated. The first results of nonlinearity correction were presented, too.
Authors and Affiliations
P. SUCHANEK, D. SLEPICKA, V. HAASZ
Keywords
Related Articles
- EP ID EP154915
- DOI -
- Views 70
- Downloads 0
FORMAL DEFINITION AND PROPERTIES OF FEB-BASED ENOB OF INTELLIGENT CYCLIC ADC
The paper presents a new approach to the measurement of effective resolution (effective number of bits - ENOB) of the cyclic A/D converters (CADCs). The core idea of the approach is a direct measurement of ENOB using, as...
FOUR-PARAMETER SINE-FITTING ALGORITHM FOR DETECTION AND CLASSIFICATION OF TRANSIENTS AND WAVEFORM DISTORTIONS
This paper describes a new method for detection of some power quality (PQ) disturbances, namely transients and waveform distortions. The proposed algorithm is based on a modified version of the four-parameter sine-fitti...
THE INFLUENCE OF INACCURACY OF CALCULATING ALGORITHMS USED IN THE CMMS ON MEASUREMENT RESULTS -FINAL REPORT<br />
The author has devised a test for evaluating the accuracy of calculation algorithms and used it to establish the accuracy of the software of fourteen CMMs offered by world top manufacturers. Using a minimum number of mea...
ANALYTICAL MODELLING OF KARMAN VORTEX STREET
A new approach to the Karman vortex street modelling is presented. The model is based on observations of the Karman vortex street. The idea of the model is based on fundamental mechanical formulas. According to the model...
FACTORS LIMITING EXTREMELY SENSITIVE MEASURING RANGES OF CONTEMPORARY PICOAMMETERS<br />
In the paper the principle of operation of contemporary picoammeters with analog conversion of current into voltage has been presented. The influence of factors disturbing the i/u conversion in a passive as well as in an...