VFTCS Series OCXO
Features
•
•
•
•
•
•
Small, Low Profile SMD Package
SC-cut crystal
High Stability up to ± 5x10
-9
Low Aging 5x10
-10
/day, 5x10
-8
/year
Low Phase Noise -160 dBc/Hz, TYP, floor
Sine Wave or HCMOS/TTL output
Applications
•
•
•
•
Base Stations
Fiber Channel
GPS
Test & Measurement
Frequency Range: 4.8MHz – 200MHz
V cc
Vc
V ref
1
2
3
DUT
5
4
O UTPUT
10K
Bottom View
To Order - Create a Part Number
VFTCS
FREQUENCY, MHz
Output
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
Code
T
S
Specification
TTL
Sinewave
Temperature Stability
Code
17
58
28
18
59
YZ
Specification
-7
1x10
-8
5x10
-8
2x10
-8
1x10
-9
5x10
-Z
Yx10
Aging
Code
L
S
P
Specification
-9
1x10 /Day
-10
5x10 /Day
-10
2x10 /Day
Supply Voltage
Code
5
2
3
Specification
5V ± 5%
12V ± 5%
3.3V ± 5%
Not all combinations are
available. See table below
or Consult Factory.
Available Frequency Stabilities over Operating Temperature Ranges
Code
A
B
C
D
E
F
Temperature Range
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
1x10
∗
∗
∗
∗
∗
∗
-7
5x10
∗
∗
∗
∗
∗
∗
-8
2x10 8
∗
∗
∗
∗
∗
∗
-
1x10
∗
∗
∗
∗
∗
-8
5x10
∗
∗
∗
∗
-9
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com
VFTCS Series OCXO
Specifications:
Parameter
Symb
Absolute Maximum Ratings
Input Break
Vcc
Down Voltage
Storage temper.
Ts
Control Voltage
Vc
Electrical
Frequency
F
Frequency Stability
∆F/F
Aging
Allan Variance
SSB Phase Noise
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
±10
1
-10
5x10
-7
1x10
-11
1x10
-125
-145
-165
±1
Typ
Max
7.0
85
9
200
Unit
V
°C
V
All parameters for 10 MHz
MHz
ppb
ppb
After 30 days
Note
dBc/Hz
At higher frequencies,
deteriorates by
20LogN dB
±20
ppb
±1.0
ppb/G
Vcc
4.75
5.0
5.25
V
3.3V, 12V±5% optional
P
steady state, 25°C
1.0
1.2
W
steady state, -30°C
2.0
2.2
start-up @ -30°C
3.2
3.5
Load
10KOhm//15pF (HCMOS/TTL), 50 Ohm (Sinewave)
Warm-up time
t
to 0.1ppm accuracy
2
3
minutes
Output Waveform
4.0V HCMOS/TTL compatible or Sinewave (>+7dBm)
-25dB Harmonics at sine
Control voltage
Vc
0
4.0
V
To 2.8V at Vcc=3.3V
Pull range
from nominal F
±0.5
±1
ppm
At 10 MHz
Deviation slope
Monotonic, posit
0.4
ppm/V
Setability
Vc0
@25°C, Fnom.
1.0
2.0
3.0
V
Environmental and Mechanical
Operating temp. range
-30°C to 70°C Standard, Other options – see chart below
Mechanical Shock
Per MIL-STD-202, 30G, 11ms
Vibration
Per MIL-STD-202, 5G to 2000 Hz
Soldering Conditions
230°C for 30s Max SMD profile
Electrical Connections
Pin Out
Pin #1- Vc ; Pin #2- Vref; Pin #3- Vcc; Pin #4 - Output ; Pin#5 - GND
Retrace
G-sensitivity
Input Voltage
Power consumption
SMD Reflow Profile
250
Temperature, °C
200
150
100
50
0
0
50
100
150
200
Time, s
REVA 0506
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com
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