CMOS VOLTAGECONTROLLED OSCILLATOR HAVING A WIDE FREQUENCY RANGE WITH A WIDE FREQUENCY RANGE

摘要

the voltage of the relaxation oscillator (my 510) from the computer (152) signal in the hysteresis circuit (199) from a reference threshold (N1) and comparison of (175) etc.. the oscillator's frequency threshold level (N1) of the hysteresis range of the signal and the occurrence of speed change with changes in sikkim. the oscillator and the current source (124, 134, 145, contributions of, 170, 172, 187) to the external supply of band gap reference (VGB) from the occurrence of the avant garde ("csi") of the control.the VCO (510) VCO (510) in the occurrence of the avant garde ("csi") of a controlled current source (712, 714, 716, 718) is the phase detector (512) from the pulse (up, dn), in response to the passive device (728, 730) on all of the charging pump (514) include the use of phase synchronizing loop.