ICS8442BI Data Sheet
700MHz, CRYSTAL OSCILLATOR-TO-DIFFERENTIAL LVDS FREQUENCY SYNTHESIZER
LAYOUT GUIDELINE
The schematic of the ICS8442BI layout example used in this
layout guideline is shown in Figure 5A. The ICS8442BI recom-
mended PCB board layout for this example is shown in Figure
5B. This layout example is used as a general guideline. The
layout in the actual system will depend on the selected com-
ponent types, the density of the components, the density of the
traces, and the stack up of the P.C. board.
C1
C2
X1
U1
VDD
1
2
3
4
5
6
7
8
24
R7
10
M5
M6
M7
M8
N0
N1
nc
X_OUT
T_CLK
nXTAL_SEL
VDDA
S_LOAD
S_DATA
S_CLOCK
MR
23
22
21
20
19
18
17
VDDA
C11
0.01u
C16
10u
GND
ICS8442
Zo = 50 Ohm
C14
0.1u
+
-
R1
100
C15
0.1u
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
+
-
R2
100
FIGURE 5A. RECOMMENDED SCHEMATIC LAYOUT
ICS8442BYI REVISION A NOVEMBER 18, 2013
10
©2013 Integrated Device Technology, Inc.
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
