ICS728
L
OW
C
OST
27 MH
Z
3.3 V
OLT
VCXO
Pin Assignment
X1
VDD
VI N
GN D
1
2
3
4
8
7
6
5
X2
GND
DC
CLK
8 - pi n ( 1 5 0 mi l ) SOI C
Pin Descriptions
Pin
Number
1
2
3
4
5
6
7
8
Pin
Name
XI
VDD
VIN
GND
CLK
DC
GND
X2
Pin
Type
Input
Power
Input
Power
Output
__
Power
Input
Pin Description
Crystal connection. Connect to the external pullable crystal.
Connect to +3.3 V (0.01uf decoupling capacitor recommended).
Voltage input to VCXO. Zero to 3.3 V analog input which controls the
oscillation frequency of the VCXO.
Connect to ground.
Clock output.
Do not connect to this pin
Connect to ground.
Crystal connection. Connect to the external pullable crystal.
MDS 728 B
Integrated Circuit Systems
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2
525 Ra ce Stree t, Sa n Jose, CA 951 26
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Revision 012505
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w w w. i c st . c o m
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
