DIGITAL PHASE-LOCKED LOOP USING PHASE-TO-DIGITAL CONVERTER, METHOD THEREOF, AND DEVICES HAVING THE SAME

摘要

Disclosed are a digital phase-locked loop (DPLL) circuit using a phase-to-digital converter, a method for operating the same, and an apparatus comprising the same. The DPLL comprises a digital control oscillator changing a frequency and a phase of an output oscillation signal in response to a digital control code; a main frequency divider dividing a frequency of the output oscillation signal to generate a first feedback signal; and a phase-to-digital converter dividing the phase of the output oscillation signal and generating a quantization code acquired by converting the phase difference between a reference signal and the first feedback signal into a digital value by using the divided phase signal, wherein the digital control code is generated based on the quantized code.