INTEGRATION METHOD AND INTEGRATOR AND VOLTAGE CONTROL OSCILLATOR AND FREQUENCY/VOLTAGE CONVERTER

摘要

PROBLEM TO BE SOLVED: To make a highly precise oscillation signal whose jitter is reduced obtainable at the time of using an integrator for a voltage control oscillator, and to make a highly precise output voltage whose S/N is high obtainable at the time of using the integrator for a frequency/voltage converter. SOLUTION: A opening and closing switch circuit 31 is provided between an integral capacity 27 and a current supplying circuit 28 for supplying DC currents to the integral capacity 27. The opening and closing switch circuit 31 is turned off in a fixed time during the integral time of the integral capacity 27, and a time for actually operating integration is set as [(an integral time)-(a fixed time during an integral time)].