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.
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© 2001 Springer Science+Business Media New York
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Vankka, J., Halonen, K. (2001). Sources of Noise and Spurs in DDS. In: Direct Digital Synthesizers. The Springer International Series in Engineering and Computer Science, vol 614. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-3395-2_5
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DOI: https://doi.org/10.1007/978-1-4757-3395-2_5
Publisher Name: Springer, Boston, MA
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