PLL CIRCUIT AND METHOD OF CONTROLLING THE SAME

• Main Author: KAWASHIMA TOSHITSUGU
• Format: Patent
• Language: English
• Published: 17.06.2010
• Subjects: AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY

PROBLEM TO BE SOLVED: To solve such a problem that the conventional PLL (Phase Locked Loop) circuit can not stably control an oscillation frequency in good precision. SOLUTION: The PLL circuit includes: a PFD (Phase-Frequency Detector) 401 that detects a phase difference between two clock signals; a...