LOW DISTORTION SIGNAL GENERATOR BASED ON DIRECT DIGITAL SYNTHESIS FOR ADC CHARACTERIZATION

Walter F. Adad, Ricardo J. Iuzzolino

Abstract

This paper presents a low distortion signal generator with a frequency range from 0 to 10 kHz using the direct digital synthesis (DDS) method for ADC characterization. The results show that the maximum distortion in the whole frequency range is -80.37 dB, the frequency resolution is 1.421 nHz (with a 48-bits DDS chip), the stability in frequency is 25 μHz/Hz and the amplitude stability is 13 μV/V.

Keywords

direct digital synthesizer, frequencysynthesizers, direct digital synthesis, function generator

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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