| 摘要 |
PROBLEM TO BE SOLVED: To provide a control voltage generating circuit, a PLL circuit and a clock synchronizing circuit which are superior in following property and stability, with respect to sharp change of an input. SOLUTION: The control voltage generating circuit which forms a control voltage to be supplied to a voltage controlled oscillator is provided with at least a phase amount control unit for forming a pulse type control voltage whose width is controlled, and establishes the control as the amount of phase to an oscillation output from the voltage controlled oscillator. The PLL circuit employs the control voltage generating circuit. The clock synchronizing circuit employs the PLL circuit. |
