| 摘要 |
There is provided an integrated circuit in which a reference-signal source generates a reference signal having a basic frequency, a phase locked loop includes a voltage-controlled oscillator, a first frequency divider to generate a first frequency-divided signal based on the signal by N, a phase detector, a charge pump and a loop filter, the second frequency generates a second frequency-divided signal based on the signal generated by the voltage-controlled oscillator by M, wherein a minimum absolute value of a difference between the basic frequency multiplied by "K" and a frequency of the second frequency-divided signal is equal to or less than a low cutoff frequency of a bandpass filter or equal to or higher than a high cutoff frequency of the bandpass filter, the bandpass filter being represented by a transfer function from an input of the voltage-controlled oscillator to an output of the phase locked loop. |
