VFT14A Series
Micro-miniature, Evacuated OCXO
Features
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Smallest OCXO available (< 1 cm , 2g
weight)
SC-cut crystal
High Vacuum Sealed Enclosure
Extremely Low Power Consumption (<100
mW)
Very Fast Warm-up Time (30s)
-9
High Stability (up to ± 5x10 over 0°C to
50°C)
-10
-8
Low Aging (5x10 /day, 5x10 /year)
Very Low Phase Noise (-160dBc/Hz TYP)
HCMOS/TTL output, sine available
4.8 MHz to 180 MHz Frequencies Available
DIL 14 compatible pinout
3
Applications
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Telecommunications
Data Communications
Battery Powered
Systems and Equipment
GPS
Instrumentation
SARSAT Beacons
Create a Part Number
VFT14A
FREQUENCY, MHz
S for sinewave
Temperature Range
Code
Specification
A
0°C to 50°C
B
-10°C to 60°C
C
0°C to 70°C
D
-20°C to 70°C
E
-30°C to 70°C
F
-40°C to 85°C
Temperature Stability
Code
Specification
17
1x10
-7
58
5x10
-8
28
2x10
-8
18
1x10
-8
59
5x10
-9
YZ
Yx10
-Z
Aging
Code
L
S
Specification
1x10
-9
/Day
5x10
-10
/Day
Supply Voltage
Code
Specification
5
5V ± 5%
3
3.3V ± 5%
Not all combinations are
available. Consult Factory.
75 South Street, Hopkinton, MA 01748
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800-982-5737
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508-435-6831
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FAX 508 435-5289
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www.valpeyfisher.com
VFT14A Series
Micro-miniature, Evacuated OCXO
Specifications:
Parameter
Input Break
Down Voltage
Storage temper.
Control Voltage
Symb
Vcc
Ts
Vc
F
∆F/F
Condition
Min
-0.5
-40
-1
4.8
vs. Temp.
vs. Supply
per day
per year
.1s to 10s
10 Hz
100 Hz
10 KHz
After 30 minutes
worst direction
4.75
10.000
±50
1
5E-10
1E-7
1E-11
-120
-145
-160
Typ
Max
7.0
85
6
180
5
Unit
V
°C
V
MHz
ppb
ppb/V
Note
Absolute Maximum Ratings
Electrical
See chart below
after 30 days
All parameters for 10 MHz
Frequency
Frequency stability
Aging
Allan Variance
SSB Phase Noise
dBc/Hz
Deteriorates by
20LogN for
higher freq.
Retrace
G-sensitivity
Input Voltage
Input Current
Vcc
Icc
Load
Warm-up time
Output Waveform
Tristate Control
Control voltage
Pull range
Deviation slope
Setability
Operating temp. range
Mechanical Shock
Vibration
Soldering Conditions
Hermetic Seal
τ
Vc
Vc0
steady state, 25°C
steady state, -30°C
start-up current
10KOhm//15pF
to 0.1ppm accuracy
35
s
3.3V HCMOS/TTL compatible
Logic “high” or floating – active; logic “low” – infinite impedance
0
4.1
V
from nominal F
±0.5
±1
ppm
Monotonic, posit
0.4
ppm/V
@25°C, Fnom.
1.0
2.0
3.0
V
-30°C to 70°C Standard, Other options – see chart below
Per MIL-STD-202, 30G, 11ms
Per MIL-STD-202, 5G to 2000 Hz
Leads Temperature 260°C, for 10s, Max
Leak rate less than 1x10-8 atm.ccm/s of helium, TO-8 only
Pin 1- Vc; Pin 7- Case, GND; Pin8 – Output; Pin 14 - Vcc
5.0
25/35
70/100
100/150
±20
±1.0
5.25
35/45
ppb
ppb/G
V
mA
3.3V±5% optional
5V/3.3 supply
40s at 3.3V supply
Sine wave available
Environmental and Mechanical
Electrical Connections
Pin Out
Rev 12/05
75 South Street, Hopkinton, MA 01748
•
800-982-5737
•
508-435-6831
•
FAX 508 435-5289
•
www.valpeyfisher.com
RF/Wirelessly
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