FEB-BASED APPROACH TO THE MEASUREMENT OF EFFECTIVE RESOLUTION OF CYCLIC ADC |
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| A.A. Platonov, Ł.M. Małkiewicz, K. Jedrzejewski |
- Abstract:
- The goal of the paper is presentation of 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 direct measurement of ENOB using, as a numerical measure, the number of true bits before the first erroneous bit (FEB) position. The position of FEB is determined as the first non-zero bit in the binary presentations of conversion errors. The definition of ENOB based on FEB is introduced and discussed. The particularities of the proposed method are analysed in simulation experiments. There are presented typical evolutions of FEB distributions in sequential cycles of conversion. Values of ENOB obtained using FEB-based method are compared with results obtained using the conventional approach to ENOB assessment. The comparison is performed on example of analysis of influence of DNL and INL errors of internal A/D converter on ENOB of CADC. The proposed method of the ENOB measurement gives more adequate information about the actual ADC resolution and weakens the influence of the form of testing signals on the results of the ENOB measurement.
- Download:
- IMEKO-IWADC-2008-117.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- IWADC 2008
- Title:
13th IMEKO TC4 Workshop on ADC Modelling and Testing IWADC (together with XVIth IMEKO TC4 International Symposium on Electrical Measurements and Instrumentation) (IWADC)
- Place:
- Florence, ITALY
- Time:
- 22 September 2008 - 24 September 2008