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NJ88C30
(a) Phase P DIV output leads
phase COMP FREQ output
COMP FREQ
P DIV
f UP
f DN
LD
(b) Phase P DIV output lags
phase COMP FREQ output
COMP FREQ
P DIV
f UP
f DN
LD
Fig. 6 Phase comparator waveforms
DUTY CYCLE
f UP
100%
0%
22π
0
2π
PHASE DIFFERENCE
100%
DUTY CYCLE
f DN
0%
22π
0
2π
PHASE DIFFERENCE
Fig. 7 Phase comparator output characteristics
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