Multi-chip phase synchronization circuit of fractional-N PLL

نویسندگان

چکیده

A digital integrated circuit to realize multi-chip phase synchronization of fractional-N PLL with local oscillator divider is designed. An offset fractional frequency ratio added in difference calculation, which effectively avoids the large calculation error under some special ratios. Different from traditional one-time synchronization, a method tracking mode proposed, can further reduce error. The test result chip finished 65nm COMS shows that and adding ratio’s are effective about 0.2°.

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ژورنال

عنوان ژورنال: IEICE Electronics Express

سال: 2023

ISSN: ['1349-2543', '1349-9467']

DOI: https://doi.org/10.1587/elex.20.20230035