Phase-locked loop apparatus

Details Phase-locked loop apparatus Phase-locked loop apparatus

H - Electricity

03

L

328/28

H03L 7/06 (2006.01) G06F 1/08 (2006.01) H03L 7/095 (2006.01) H03L 7/099 (2006.01) H03L 7/14 (2006.01)

Patent

CA 2010265

1 Abstract of the Disclosure A clock signal having a predetermined frequency output from a clock generator and a signal output from a voltage controlled oscillator (VCO) and supplied through a frequency divider are supplied to a phase detector. An output from the phase detector is supplied to a loop filter. The loop filter supplies a voltage in accor- dance with an output from the phase detector to a first control voltage terminal of the VCO and to a phase lock-in circuit. The phase lock-in circuit supplies a voltage in accordance with an output voltage from the loop filter to a second control voltage terminal of the VCO. In the VCO, the sensitivity of the first control voltage terminal is lower than that of the second control voltage terminal, i.e., a rate of change in output frequency with respect to a change in second control voltage is higher than that of the first control voltage. A phase lock detector for detecting whether or not the PLL apparatus is set in a phase- locked state is also connected to the phase lock-in circuit. When the phase lock detector detects a phase-locked state, a trigger signal is supplied to a power Vi turn off circuit to turn off a power source Vi. The power source Vi is connected to the clock generator, the phase detector, a part of the phase lock-in circuit, the phase lock detector, and the frequency divider. Power is always supplied from a power source Vc to the 2 remaining circuit of the phase lock-in circuit.

Affiliated with

Also associated with

Rating

Phase-locked loop apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase-locked loop apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase-locked loop apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1906735