Application of digital dither to reduction of feedback D/A converters influence on intelligent cyclic A/D converters performance

• Autorzy: Jędrzejewski K. , Platonov A. A.
• Języki publikacji: EN

Abstrakty

EN

The effect of termination of resolution growth, common for cyclic analogue-to-digital converters (CADCs) the, which appears after a definite (threshold) number of the conversion cycles, is investigated in the paper. The effect is caused by the finite resolution of the D/A converter (DAC) in the feedback chain. In an "intelligent" CADC (IC ADC, [1-6]), the growth of resolution can be restored by adding the digital dithering signal to the signal at the input of the feedback DAC. The dependence of the rate of restored growth of resolution on the distribution and amplitude of the dithering signal is investigated. The results of analysis are verified in advanced simulation experiments.

Słowa kluczowe

EN

cyclic A/D converters; resolution; ENOB; digital dither

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2006
• Tom: Vol. 13, nr 4
• Strony: 357--372
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Jędrzejewski K.

autor

Platonov A. A.

• Warsaw University of Technology, Faculty of Electronics and Information Technology, Poland,

Bibliografia

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• 2. Platonov A. A., Jędrzejewski K., Jasnos J.: Mathematical and computer models in multi-pass ADC design and optimization. Proceedings of 4th International Conference on Advanced A/D and D/A Conversion Techniques and Their Applications & 7th European Workshop on ADC Modelling and Testing (ADDA&EWADC 2002), Prague, Czech Republic 2002, pp. 247-250.
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• 4. Platonov A. A., Małkiewicz Ł. M., Jędrzejewski K.: Adaptive CADC optimisation, modelling and testing. Proceedings of 13th International Symposium on Measurements for Research and Industry Applications and 9th Workshop on ADC Modelling and Testing, Athens, Greece 2004, pp. 817-821.
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• 11. Platonov A. A., Małkiewicz Ł.: Analytic design of cyclic low-energy ADC with sub-optimal estimates calculation. Proceedings of IMEKO XVII World Congress, Cavtat-Dubrovnik, Croatia 2003, pp. 342-347.
• 12. Platonov A. A., Jędrzejewski K.: Improvement of cyclic A/D converters performance under greater number of conversion cycles. Proceedings of 16th European Conference on Circuits Theory and Design, ECCTD'03, Kraków, Poland, 2003, vol. III, pp. 193-196.
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