Frequency Spectrum Correction Method for the ADC Testing

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F04%3A03098637" target="_blank" >RIV/68407700:21230/04:03098637 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Frequency Spectrum Correction Method for the ADC Testing
Original language description
The main issue of high resolution ADC testing in the frequency range from hundreds of kHz to several MHz is the spectral purity of a testing signal. Commercial low distortion generators can operate only up to the frequency of one or two hundreds of kHz;generators operating in higher frequency range have generally the spectral purity worse than the one corresponding to the ADC resolution. Some improvements can be brought by filtering of the testing signal. Most of the LC filters for the frequency rangeup to several MHz contain coils with ferromagnetic cores. This causes the rise of higher harmonic components. If those components are known or determined by measurement, they can be subtracted from the frequency spectrum measured by the tested ADC. In the ideal case, only a frequency spectrum corresponding to the ADC non-linearity remains. The measurement system designed for frequency spectrum correction and the first results achieved by applying this method are introduced in the paper.
Czech name
Není k dispozici
Czech description
Není k dispozici

Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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