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Phase Noise in Time Domain ADC Testing

The results of ADC dynamic testing are strongly dependent on test signal purity. From this reason, the spectral purity of the most common ADC test signal, sine wave, is often improved mostly by analog filters. Such analog signal processing can essentially suppress harmonic and spurious components but not phase noise. The effects of phase noise are therefore discussed in this paper and a possible way of low-frequency phase noise suppression in the time domain is proposed and an example shown.