USING AN INTERPOLATION METHOD FOR NOISE SHAPING IN A/D CONVERTERS

P. Daponte, R. Holcer, L. Horniak, L. Michaeli, S. Rapuano
Abstract:
Digital post processing of output data is often used to enhance the ADC Effective Number Of Bits (ENOB). In particular, it can be used to partially recover ENOB restrictions caused by nonlinearities. The paper deals with advantages and disadvantages coming from the application of a proposed nonlinearity correction method based on the Bayes theorem. It allows the reduction of large scale errors in output signal by means of the use of dithering with low peakpeak voltage instead of a high amplitude one. The paper gives a brief description of the method. Then, the results of an experimental investigation carried out on actual ADC output data are presented and discussed.
Keywords:
interpolation, noise shaping, ADC correction
Download:
IMEKO-TC4-2002-013.pdf
DOI:
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Event details
IMEKO TC:
TC4
Event name:
TC4 Conference and Workshop 2002
Title:
4th International Conference on Advanced A/D and D/A Conversion Techniques and their Applications (together with 7th IMEKO TC4 Workshop on ADC Modelling and Testing)
Place:
Prague, CZECH REPUBLIC
Time:
26 June 2002 - 28 June 2002