VFT8H Series Micro-miniature, Evacuated OCXO
Product Data Sheet
COOL…TO THE TOUCH
Features
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Smallest OCXO available (< 1 cm
3
, 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)
Low Aging (5x10 /day, 5x10 /year)
Very Low Phase Noise (-160dBc/Hz TYP)
HCMOS/TTL output
“Gull-Wing” SMD Version Available
4.8 MHz to 50 MHz Frequencies Available
“Half-size”, DIL-8 compatible pinout
-10
-8
Ø0.500(12,7mm)
0.395 (10,0mm)
0.48 (12,2mm)
0.020(0,5mm)
0.25 (6,35mm) MIN
Ø0.018 (0,45mm)
0.300 (7,62mm)
0.600 (15,2mm)
Applications
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Telecommunications
Data Communications
Battery Powered Systems and Equipment
GPS
Instrumentation
SARSAT Beacons
8
1
2
4
0.100 (2,54mm)
0.300 (7,62mm)
8
1
2
4
5
5
0.670 (17,0mm)
Ø0.580(14,3mm)
SMD Version
Vcc
SMD Reflow Profile
250
Temperature, °C
200
150
100
50
0
0
50
100
150
200
Vc
0.1K
1
Vref 2
8
DUT
4
5
OUTPUT
10K
Time, s
VF Technologies
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75 South Street, Hopkinton, MA 01748
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Tel. 1-800-XTALREP, 508-435-6831
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FAX 508 4355289
1
VFT8H Series Micro-miniature, Evacuated OCXO
Specifications:
Parameter
Symb
Absolute Maximum Ratings
Vcc
Input Break
Down Voltage
Ts
Storage temper.
Vc
Control Voltage
Electrical
F
Frequency
Frequency stability
∆F/F
Aging
Allan Variance
SSB Phase Noise
Retrace
G-sensitivity
Input Voltage
Input Current
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
±20
1
5E-10
1E-7
1E-11
-120
-145
-160
Typ
Max
13.0
85
9
50
5
Unit
V
°C
V
MHz
ppb
ppb/V
Note
after 30 days
dBc/Hz
±20
±1.0
5.25
35/50
ppb
ppb/G
V
mA
Deteriorates by
20LogN at higher
Frequencies
steady state, 25°C
steady state, -30°C
start-up current
10KOhm//15pF
Load
to 0.1ppm accuracy
35
s
45s at 3.3V supply
Warm-up time
τ
3.3V HCMOS/TTL compatible
Output Waveform
Logic “high” or floating – active; logic “low” – infinite impedance
Tristate Control
Vc
0
4.0
V
2.8 V with 3.3V supply
Control voltage
from nominal F
±0.5
±1
ppm
Pull range
Monotonic, posit
0.4
ppm/V
Deviation slope
Vc0
@25°C, Fnom.
1.0
2.0
3.0
V
(1.4 ±.8)V with 3.3V
Setability
Environmental and Mechanical
-30°C to 70°C Standard, Other options – see chart below
Operating temp. range
Per MIL-STD-202, 30G, 11ms
Mechanical Shock
Per MIL-STD-202, 5G to 2000 Hz
Vibration
Leads Temperature 260°C, for 10s, Max, 230°C for 30s Max SMD profile
Soldering Conditions
Hermetic Seal
Leak rate less than 1x10-8 atm.ccm/s of helium
Electrical Connections
Pin Out
Pin 1- Vc ; Pin 2-Vref; Pin 4- Case, GND; Pin5 – Output; Pin 8- Vcc
Vcc
Icc
5.0
25/35
70/85
150/150
3.3V
5V/3.3V supply
Creating a Part Number
VFT8H
S for SMD
Temperature Range
Code
A
B
C
D
E
F
Specification
0°C to 50°C
-10°C to 60°C
0°C to 70°C
-20°C to 70°C
-30°C to 70°C
-40°C to 85°C
“V” for
VCXO
Temperature Stability
Code
17
58
28
18
59
YZ
Specification
1x10
-7
5x10
-8
2x10
-8
1x10
-8
5x10
-9
Yx10
-Z
FREQUENCY, MHz
Supply Voltage
Aging
Code
L
S
P
Specification
1x10
-9
/Day
5x10
-10
/Day
2x10
-10
/Day
Code
5
3
Specification
5V ± 5%
3.3V ± 5%
Rev 01212004
Not all combinations are available. Consult Factory
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VF Technologies
•
75 South Street, Hopkinton, MA 01748
•
Tel. 1-800-XTALREP, 508-435-6831
•
FAX 508 4355289
2
All parameters for 10 MHz
See chart below
stm32/stm8
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