MB15C100 Просмотр технического описания (PDF) - Fujitsu

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MB15C100

IF Band PLL Frequency Synthesizer

Fujitsu 

s PHASE DETECTOR TIME CHART

fr

MB15C100 Series

fp

tWU

tWL

LD

DO

High impedance

Note: • Phase defference detection range = –2π to + 2π

• Spikes on Do pulse during locking state are output to prevent dead zone.

• LD output becomes low when phase difference is tWU or more.

• LD output becomes high when phase difference is tWL or less and continues to be so for three cycles or

more.

• tWU and tWL depend on OSCin input frequency

tWU 8/fOSC: i.e. tWU 625 ns, fOSCin = 12.8 MHz

tWL 16/fOSC: i.e. tWL 1250 ns, fOSCin = 12.8 MHz

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