Patent ID: 6154095
Filing Date: 2000-11-28
Classification: H03J,H03K,H03L

Abstract:
An oscillator comprising:a piezoelectric resonator;an oscillation signal output section that oscillates the piezoelectric resonator and outputs an oscillation signal of a first frequency;a first programmable divider that divides the first frequency of said oscillation signal by a first frequency dividing number to obtain a reference signal of a second frequency;a PLL circuit section that receives said reference signal input thereto and obtains a multiplied signal of a third frequency, said PLL circuit section multiplying said input reference signal by a second frequency dividing number from a second programmable divider provided in a feedback circuit to obtain said multiplied signal; anda setting section that variably sets said first frequency dividing number and said second frequency dividing number to values independent of each other, said piezoelectric resonator, said oscillation signal output section, said first programmable divider, said PLL circuit section and said setting section being packaged integrally with each other, the oscillator further comprising a bypass circuit that directly outputs said oscillation signal without passing the oscillation signal through the first programmable divider and the PLL circuit section.