Phase locked oscillator

Details Phase locked oscillator Phase locked oscillator

H - Electricity

03

L

331/35

H03L 7/10 (2006.01) H03L 7/089 (2006.01)

Patent

CA 1291542

ABSTRACT Disclosed is a circuit which introduces an increased current into a phase lock loop circuit at very specific times. The increased current is introduced during every even pulse in the PLO sync zone. The result is that the increased current associated with every even pulse biases the voltage controlled oscillator toward phase locking onto the even pulses. By intro- ducing increased amounts of current larger phase shifts in the frequency of the read clock are produced while maintaining the loop gain of the circuit. Consequently, the circuit locks on more quickly.

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