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| SP5654 Datasheet, PDF (10/15 Pages) Zarlink Semiconductor Inc – 2.7GHz 3-WIRE BUS CONTROLLED SYNTHESISER | |||
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SP5654
vREF
400
400
RF INPUTS
RF inputs
vCC
20k
I/P
3k
20k
Mode select input
VCC
CRYSTAL
vCC
CHARGE
PUMP
VADIS
170
DRIVE
OUTPUT
(o/p disable)
Loop amplifier
I/P
3k
VCC
67k
Data, Clock, Enable inputs
VCC
OUTPUT
Reference oscillator
Output ports P0âP3 and lock output
Fig. 7. Input/Output interface circuits
8
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