Data Sheet

VFOV650
Oven Controlled Crystal Oscillator
High Stability, DIL-14 package
Features
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High stability – small package - fast warmup time
Low power consumption - low drift - tight holdover
Very low phase noise (-174dBc floor available)
10 MHz to 50 MHz frequencies available
Accurate clock with no tuning required
Voltage control function available
RoHS Status
Applications

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IEEE 1588 clock
Stratum 3 holdover
Wireless base stations
Timing over packet
Remote sensing instrumentation
Electrical Specifications
Parameter
Frequency
Range
Frequency
Stability
Aging
Total Free
Run
Accuracy
Operating
Temperature
Range
SSB Phase
Noise
Symbol
Condition
Min
Typ
10.0
∆F/F
∆F/F
Unit
50.0
MHz
±500
ppb
For fixed frequency
option only
See “How to Order”
Chart for Available
Options
Initial Calibration
(∆F/FNOM)
±300
Vs. Operating Temperature
(Ref to +25C Frequency)
±10
ppb
Vs. Supply Voltage
±2.0
ppb
Per day
First year
10 years
±1.0
±0.2
±1.5
ppb
ppm
ppm
Over all conditions for 10
year life
T
L(f)
Max
-40
10 Hz
100 Hz
10 kHz
100 kHz
1 MHz
±2.5
ppm
+85
C
-110
-135
-160
-163
-163
dBc/Hz
Note
VCC ∆±5%
After 30 days. Values
for ≤ 20 MHz
frequency. For
frequencies above
20MHz contact factory
for aging limits.
For fixed frequency
option only and
frequency ≤20MHz
See “How to Order”
Chart for Available
Options
At 20 MHz Performance is
dependent on
frequency
Enhanced phase noise versions available. Noise floor below -174dBc/Hz available.
Contact factory for custom quotation.
Supply
Current
ICC
Steady state, 25°C still air
Steady state, -40°C still air
Start-up Current
160
350
500
180
mA
550
VCC=3.30V
See Note 1
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctscorp.com • RevC0216
Specifications are subject to change without notice
1
VFOV650
Oven Controlled Crystal Oscillator
High Stability, DIL-14 package
Electrical Specifications
Parameter
Symbol
Supply Voltage
VCC
Output
Waveform/Load
Condition
Min
Typ
Max
Unit
3.13
3.3
3.46
V
HCMOS/TTL Compatible
Square Wave
10KOhm||15pF
Symmetry
45
Rise/Fall Time
TR/TF
Control Voltage
Range
Deviation Range
(Voltage control
option devices
only)
10KOhm || 15pf load

55
%
1.2
VC
Warm-up time
Note
5V Option available –
contact factory
0.0
ns
3.3
V
For voltage control
option only
From FNOM
±1.5
ppm
Typical value. Actual
value supplied is
dependent on frequency
To +/-10 ppb of
30 minute frequency
1
min
at +25C
Absolute Maximum Ratings
Parameter
Supply
Break Down
Voltage
Storage
Temperature
Control
Voltage
Symbol
Condition
Min
Typ
Max
Unit
VCC
-0.5
4.0
V
TS
-55
125
°C
VC
-1
6
V
Note
Environmental and Mechanical Conditions
Parameter
Mechanical Shock
Condition
Per MIL-STD-202, 30G, 11ms
Sine Vibration
MIL-STD-202, 5Gs Peak to 500 Hz
Random Vibration
Soldering/Processing
Seal
Moisture Sensitivity Level
Marking Permanency
RoHS
Packaging
MIL-STD-202F Method 214 5 Gs RMS 20 to 500Hz
Hand/Wave Solder Compatible - Washable Hermetic Enclosure
Fully Hermetic
MSL Level 1
MIL-STD-202F, Method 215
Lead Free RoHS 6/6 compliant
Antistatic Tubes
Note 1: Reduced power consumption versions available – contact factory
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctscorp.com • RevC0216
Specifications are subject to change without notice
2
VFOV650
Oven Controlled Crystal Oscillator
High Stability, DIL-14 package
How to Order
FREQUENCY, MHz
VFOV650
Temperature Stability
Code
R
Temperature Range
Code
A
B
C
D
G
Specification
±1x10
-7
-8
T
±5x10
-8
U
±2x10
V
±1x10-8
Specification
0°C to 50°C
0°C to 70°C
-10°C to 60°C
-20°C to 70°C
-40°C to 85°C
Tuning
Code
Specification
Fixed
V
Voltage Control
Available Stability Combinations
Code
R
T
Specification
0°C to 50°C
0°C to 70°C
-10°C to 60°C
-20°C to 70°C
-40°C to 85°C
-7
×
×
×
×
×
-8
×
×
×
×
×
×
×
×
×
×
×
о
о
о
±1x10
±5x10
-8
U
±2x10
V
±1x10-8
X = Available
O = Available depending on Frequency – Consult Factory
Outline Drawing
0.025
[0.635]
TYP
Bottom View
Pin #
1
Connection
N/C (fixed frequency models)
VC (voltage control option
models)
7
8
14
GND & Case
Output
VCC
0.085 [2.16] DIA.
STANDOFFS (4)
NON-CONDUCTIVE
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctscorp.com • RevC0216
Specifications are subject to change without notice
3