Bang-bang phase-locked loops (PLLs) are prone to generate unwanted output spur tones and high noise floor. In this reported work, a spur reduction technique based on dithering is compared to an alternative technique which exploits oscillator intrinsic noise. It is shown how the latter, joined to a proper loop design, allows eliminating unwanted spur tones while yielding a lower noise floor.
Comparing techniques for spur reduction in digital bang-bang PLLs
MAFFEZZONI, PAOLO;MARUCCI, GIOVANNI;LEVANTINO, SALVATORE;SAMORI, CARLO
2013-01-01
Abstract
Bang-bang phase-locked loops (PLLs) are prone to generate unwanted output spur tones and high noise floor. In this reported work, a spur reduction technique based on dithering is compared to an alternative technique which exploits oscillator intrinsic noise. It is shown how the latter, joined to a proper loop design, allows eliminating unwanted spur tones while yielding a lower noise floor.File in questo prodotto:
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