Impulse noise of digital-to-analog converters and its influence on the purity of the spectrum of digital synthesizers

The paper presents the analysis of the influence of impulse noise (“glitches”) of digital-to-analog converters on the purity of the spectrum of output oscillations of digital synthesizers. A decorrelation method of reducing the influence of “glitches” of digital-to-analog converters on the level of discrete side components in the spectrum of the output signal of the converter is proposed. The method is based on randomization and does not result in the loss of synthesizer speed. It is shown that the method proposed can find application when designing integral digital synthesizers.