Micro Miniature OCXO
ECM VFT8 Series
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Smallest OCXO Available
Extremely Low Power Consumption
Very Fast Warm-up
Low Phase Noise
Low Aging
Surface Mount Option (VFT8SM)
Parameter
Frequency Range
Frequency Stability
Aging per Day
Per Year
Allan Variance
SSB Phase Noise
10Hz
100Hz
10kHz
Retrace
G-sensitivity
Input Voltage
Input Current (Typ)
0
Steady state 25 C
0
Steady State -30 C
Start up Current
Load
Warm-up Time
Output Waveform
Control Voltage
Pulling Range
Deviation Slope
Setability
VFT8
4.80 to 50.0MHz
+/-100ppb max
5ppb max
5E-10
1E-7
1E-11
vs Temp
vs Supply
After 30Days
0.1s to 10s
-120dBc/Hz
-145dBc/Hz
-160dBc/Hz
+/-20ppb max
After 30 mins
+/-1ppb/G max
Worst Direction
5V +/-5%
12V Option
Vcc 5V
Vcc12V
25 mA
12 mA
35 / 20 max
70 mA
35 mA
100 mA
200 mA
10K ohm //15pF
35s typ to 0.1ppm
20s Vcc 12V
3.3V HCMOS /TTL Compatible
0V to 4.1V
+/-0.5ppm to +/-1ppm
from nominal
0.4ppm/V
monotonic positive
0
1.0V min 3.0V max
@ 25 C Fnom
A
12.7
B
9.27
C
14.3
D
10.9
E
6.35
F
7.62
G
15.2
H
7.62
Dimensions in mm
Pin
1
Vc
2
Vref
3
Tristate
4
Case
Gnd
5
O/P
6/7
N/C
8
Vcc
VFT8H A 17 L
2 10.0M
Temperature
0
0
A=
0 C to 50 C
0
0
B=
-10 C to 60 C
0
0
C=
0 C to 70 C
0
0
D=
-20 C to 70 C
0
0
E=
-30 C to 70 C
0
0
F=
-45 C to 85 C
Stability
17=
58=
28=
18=
59=
YZ
1x10
-8
5x10
-8
2x10
-8
1x10
-9
5x10
-z
Yx10
-7
Aging
L=
S=
P=
1x10 /Day
-10
5x10 /Day
-10
2x10 /Day
-9
Supply
5=
2=
Frequency
5V
12V
ECM Electronics Limited, Penmaen House, Ashington, West Sussex, RH20 3JR, UK
Tel: +44(0)1903 892810: Fax: +44(0)1903 892738. Email: ecm@ecmelectronics.co.uk
Although we have attempted to accurately reflect the products we market. ECM reserve the right without prior notice to
discontinue any product or make design changes we believe necessary.
Issue 2
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