Phase Accuracy of Charge Pump PLL's
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Phase-lock loops using charge pumps are found to have remarkably good potential for accurate phase tracking. The several favorable factors are described and numerical calculations provide examples of typical errors. Inaccuracy as small as fractional microcycles appears to be an attainable goal.
[1] F. Gardner,et al. Charge-Pump Phase-Lock Loops , 1980, IEEE Trans. Commun..