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Application Example - Fujitsu MB15F74UL Datasheet

Dual serial input pll frequency synthesizer
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APPLICATION EXAMPLE

1000 pF
1000 pF
3.0 V
0.1 F
Note : Clock, Data, LE : The schmitt trigger circuit is provided (insert a pull-down or pull-up register
to prevent oscillation when open-circuit in the input) .
1000 pF
TCXO
GND OSC
Clock
IN
20
19
18
fin
1
IF
2
Xfin
IF
3
GND
IF
MB15F74UL
4
V
CCIF
5
PS
IF
8
7
Vp
6
IF
3.0 V
Do
LD/fout
Do
IF
0.1 F
Lock Det.
Data
LE
16
17
fin
RF
15
Xfin
14
RF
GND
13
RF
V
CCRF
12
PS
RF
9
10
11
Vp
RF
RF
3.0 V
0.1 F
LPF
VCO
LPF
VCO
MB15F74UL
From controller
1000 pF
1000 pF
3.0 V
0.1 F
Output
Output
23

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