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Sources of Noise and Spurs in DDS

  • Jouko Vankka
  • Kari Halonen
Chapter
Part of the The Springer International Series in Engineering and Computer Science book series (SECS, volume 614)

Abstract

The model of the noise and spurs in the DDS has six sources. These sources are depicted symbolically in Figure 5.1. The sources are: the truncation of the phase accumulator bits addressing the sine ROM (eP), a distortion from compressing the sine ROM (eCOM), the finite precision of the sine samples stored in the ROM (eA), the digital-to-analog conversion (eDA), a post-filter (eF), the phase noise of the clock frequency (nclk), and the frequency error (Δf). The frequency error (Δf) causes a frequency offset (2.2), but not noise and spurs.

Keywords

Discrete Fourier Transform Phase Noise Clock Frequency Quantization Error Clock Signal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • Jouko Vankka
    • 1
  • Kari Halonen
    • 1
  1. 1.Helsinki University of TechnologyFinland

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