MK3721 Просмотр технического описания (PDF) - Integrated Circuit Systems
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MK3721 Datasheet PDF : 4 Pages
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I CR O C LOC K
MK3721
Low Cost 3.3 Volt VCXO
Pin Assignment
MK3721
X1 1
VDD 2
VIN 3
GND 4
8 X2
7 DC
6 REFOUT (VCXO)
5 DC
8 pin (150 mil) SOIC
Pin Descriptions
Number
1
2
3
4
5
6
7
8
Name
X1
VDD
VIN
GND
DC
REFOUT
DC
X2
Description
Crystal connection. Connect to a pullable 16.2 - 28 MHz crystal.
VDD. Connect to + 3.3 V.
Voltage input to VCXO. Zero to 3.3 V analog input which controls the frequency of the VCXO.
Connect to ground.
Don't Connect anything to this pin.
VCXO CMOS level clock output matches the nominal frequency of the crystal.
Don't Connect anything to this pin.
Crystal connection. Connect to a pullable 16.2 - 28 MHz crystal.
Crystal Specifications
Correlation (load) capacitance
Initial accuracy
Drift over temperature and aging
C0/C1 ratio
ESR
14 pF
±20 ppm maximum
±50 ppm maximum
240 maximum
35 Ω maximum
MDS 3721 B
2
Revision 082800
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA • 95126• (408)295-9800tel • www.icst.com
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