- - All-Digital Phase-Locked Loop with Fine Multi-Sampling Time-to-Digital Converter and Method for Operating thereof

摘要

An all-digital phase-locked loop and a method of its operation using a fine multisampling time-to-digital converter are presented. An all-digital phase-locked loop using a fine multiple sampling time digital converter, comprising: a Time-to-Digital Converter (TDC) for converting the phase difference between two input signals into a digital value; The remaining signals that have not been converted in the time-to-digital converter generate a multiphase signal through a delay-locked loop (DLL) -based multiphase generator, A fine multi-sampling time-to-digital converter for converting the phase difference into the digital value using a reference signal; A digital loop filter for converting an output of the time-to-digital converter and the fine multi-sampling time-to-digital converter into a control code; And a digital control oscillator for generating the frequency of the output signal by the control code.