PLL FREQUENCY SHNTHESIZER FOR PAGER

S5T8808A

11

Figure 6. Phase Detector / Lock Detector Output Waveforms

NOTES:

1.

Phase detector always compares the Phase difference of N-counter with R-counter, and set to High or Low state as

much as the phase difference.

2.

The LD output set to Low level same as Phase detector error width.

Fr

Fn

PDP

LD

VDD1

GND

PDA