Data Sheet

VF940
VCXO, 3.3V or 5.0V
12.62 x 20.32 mm, HCMOS/TTL
Features



RoHS Status
Wide pull range – up to 1,000ppm for some
frequencies
Fundamental crystal design
Hermetically sealed package
Electrical Specifications
Parameter
Symbol
Frequency
Range
F
Frequency
Stability
∆F/F
Operating
Temperature
T
-40
Supply Voltage
VCC
4.75
3.15
Supply Current
ICC
Start-up Time
Phase Jitter
Typ
1.54
Vs. Operating
Temperature, VCC
5.0
3.3
No load
@ 1.4V
Duty Cycle
Output Levels
Min
Max
Unit
200
MHz
25
ppm
+85
C
5.25
3.45
V
20
mA
Note
@ 20MHz
10 TTL gates or 50 pF max., AC coupled 50 Ohms termination
recommended for F > 54MHz
Load
Rise & Fall
Times
Condition
TR/TF
20% to 80%
VOH
Max load
VOH
Max load
TS
40
50
60
%
Note 1
6
3
ns
F < 54MHz
F > 54MHz
0.9 VCC
0.1 VCC
2
1
10
ms
1
ps
fj > 1kHz
Note 1: ±5% symmetry available, contact factory for tighter requirements.
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevB0613
Specifications are subject to change without notice
1
VF940
VCXO, 3.3V or 5.0V
12.62 x 20.32 mm, HCMOS/TTL
Electrical Specifications
Parameter
Symbol
Condition
Min
Modulation
Bandwidth
fm
@ VC = 2.5V
Input
Impedance
Absolute Pull
Range
APR
Unit
Note
10
kHz
@ -3dB
fm < 10kHz
50
kOhm
Overall
±50
ppm
Note 2
Max
ppm/V
5.0V
3.3V
±20
%
Note 3
3.00
2.05
V
Note 4
LV Option
±50
±75
Monotonic, positive
Deviation Slope
Typ
Linearity
Setability
(VC for center
frequency)
VC0
@ 25C, FNOM
2.00
1.25
2.50
1.65
Note 2: Up to ±1,000 ppm pull range available at some frequencies.
Note 3: ±10% and ±5% linearity available.
Note 4: 0 to 5V control voltage available for VCC 3.3V. Nominal control voltage is 2.5V and setability is ±0.5V
in this case.
Absolute Maximum Ratings
Parameter
Input Break
Down
Voltage
Symbol
Condition
Min
Typ
Max
Unit
VCC
-0.5
+7.0
V
Storage
Temperature
TS
-40
+85
C
Control
Voltage
VC
-1
+9
V
Note
Environmental and Mechanical Conditions
Parameter
Condition
Mechanical Shock
MIL STD 202, Method 213, Condition E
Thermal Shock
MIL STD 883, Method 1011, Condition A
Vibration
MIL STD 883, Method 2007, Condition A
Soldering Conditions
Hermetic Seal
Marking
260C, for 10s max
Leak rate less than 5x10-8 atm.cc/s of helium
Epoxy ink or laser engraved
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevB0613
Specifications are subject to change without notice
2
VF940
VCXO, 3.3V or 5.0V
12.62 x 20.32 mm, HCMOS/TTL
Pin Assignments
Package
Pin #
Connection
1
VCONTROL
7
Ground, Case
8
Output
14
VCC
Marking Specification
Model Number
VF940
34.368MHz
YWWx
Pin 1
Date Code
Manufacturer’s Code
How to Order
VF940
Stability
Code
Specification*
S
±20 ppm
±25 ppm
*Old code A is ±25 ppm.
See new code above.
Duty Cycle
Code
Specification
H
±5%
±10% (std.)
—
—
Supply Voltage
Code Specification
L
3.3V
5.0V (std.)
—
FREQUENCY, MHz
Operating
Temperature Range
Code
Specification
0°C to +70°C
(std.)
1
-40°C to +85°C
Lead Configuration
Code
Specification
G
Gull Wing
Through Hole
(std.)
Absolute Pull Range
Code
Specification
±50 ppm min.
(std.)
Up to ±1,000
XXXX
ppm max.
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevB0613
Specifications are subject to change without notice
3
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