
ICS84314-02
700MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER
IDT / ICS 3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER
16
ICS84314AY-02 REV. A MARCH 24, 2009
Layout Guideline
The schematic of the ICS84314-02 layout example used in this
layout guideline is shown in Figure 8A. The ICS84314-02
recommended PCB board layout for this example is shown in
Figure 8B. This layout example is used as a general guideline. The
layout in the actual system will depend on the selected component
types, the density of the components, the density of the traces, and
the stack up of the P.C. board.
Figure 8A. ICS84314-02 Schematic of Recommended Layout
C5
0.1u
VCCO=3.3V
VCC
R2
50
X1
Set Logic
Input to
'1'
RU2
Not Install
C4
0.1u
Zo = 50 Ohm
VCC
C3
0.1u
R7
10
R5
50
Set Logic
Input to
'0'
VC
C
C7 (Option)
0.1u
To Logic
Input
pins
R3
50
RU1
1K
Logic Input Pin Examples
+
-
VCC
VCCA
U1
ICS84314_02
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
17
18
19
20
21
22
23
24
32 31 30 29 28 27 26 25
M4
M5
M6
M7
M8
VEE
VCC
VCCO
Q0 nQ0 Q1 nQ1 Q2 nQ2 Q3 nQ3
VCCO
MR
S_CLOCK
S_DATA
S_LOAD
VCCA
XTAL_SEL
T_CLK
M3 M2 M1 M0
V
C
O
_SEL
nP_LO
AD
X_O
U
T
X_I
N
C1
RD1
Not Install
C2
Zo = 50 Ohm
VCC
VCC=3.3V
VCCO
RD2
1K
Zo = 50 Ohm
C6 (Option)
0.1u
VCCO
C11
0.01u
C16
10u
R4
50
R1
50
R6
50
To Logic
Input
pins
+
-