Oven Controlled Crystal Oscillator
OX-172
OX-172
The OX-172 is a high stability ovenized crystal oscillator characterized for IEEE-1588 PTP applications in a 28 x 38 mm package.
Driven by an SC cut crystal, the oscillator provides TDEV and MTIE values that exceed the GR1244 system performance
requirements when locked through a 1 mHz bandwidth. The OX-172 is designed for operation during congested network
conditions, when the frequency and quality of the packet information is degraded. The OX-172 is a member of the OX-17 oscillator
series. Other oscillators in the series include the OX-170 standard oscillator, OX-171 high stability oscillator, and the OX-174
and OX-175 low phase noise oscillators. The Vectron design team will also help develop custom solutions where performance
optimization is required for specific applications. Please contact the factory for customization options.
Features
• Reflow Process Compatible
• SC-Cut resonator
• Temperature stability to 2 ppb peak to peak
• Best in class MTIE and TDEV
• Optimized to support timing over packet applications
• Standard Frequencies: 10, 12.8, 20 MHz
Applications
• SETS clock support
• Edge and Core routers
Performance Specifications
Frequency Stabilities
1
(Stabilities listed for 10 MHz. For stabilities above 10 MHz values may degrade. Please contact factory)
Parameter
Overall Stability
Drift
vs. Operating Temperature
Range (referenced to +25°C)
Initial Tolerance
vs. Supply Voltage Change
vs. Load Change
vs. Aging / Day
vs. Aging / Day
vs. Aging / Year
vs. Aging/ 20 Years
Retrace
2
Warm-up Time
-500
-0.5
-0.5
-1
-0.2
-20
-300
-10
Min
-1.0
-0.3
Typical
Max
+1.0
+0.3
2
4
+500
+0.5
+0.5
+1
+0.2
+20
+300
+10
5
Units
ppm
ppb
ppb pk-pk
ppb pk-pk
ppb
ppb
ppb
ppb
ppb
ppb
ppb
ppb
minutes
Condition
Free run accuracy (20 years all conditions)
over 24 hours and ±3.0°C
-20 to +70°C
-40 to +85°C
at time of shipment
V
S
±5%
Load ±5%
after 24 hours operation @ 25°C
after 72 hours operation @ 25°C
after 72 hours operation @ 25°C
after 72 hours operation @ 25°C
to ±10ppb of final frequency (1 hour reading)
@ +25°C
Page 1 of 6
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Performance Specifications
Phase Stability (at 10 MHz)
Parameter
MTIE 1 s
MTIE 10 s
MTIE 100 s
MTIE 1000 s
TDEV 1 s
TDEV 10 s
TDEV 100s
TDEV 1000s
Min
Typical
0.02
0.1
1.0
5.0
0.001
0.008
0.1
1
Max
Units
ns
ns
ns
ns
ns
ns
ns
ns
Condition
Wander Generation per GR1244, system per-
formance when locked through a 1mHz loop
bandwidth, see typical performance data.
Wander Generation per GR1244, system per-
formance when locked through a 1mHz loop
bandwidth, see typical performance data.
1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
ppb/g
Additional Parameters
Phase Noise
-85
-115
-135
-145
-150
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
1
For lower phase noise, please review the OX-174 datasheet.
g-sensitivity
g-sensitivity of 0.5 ppb/g available in this package size. Please contact factory for ordering information.
For g-sensitivity <0.5 ppb/g, please review the OX-043 series.
Supply Voltage (Vs)
Parameter
Supply Voltage (Vs)
Min
3.135
4.75
Typical
3.3
5.0
Max
3.465
5.25
3.5
1.5
Units
VDC
VDC
Watts
Watts
Watts
Watts
Condition
during warm-up, all temperatures
steady state @ +25°C
steady state @ -40°C
steady state @ +85°C
time required to achieve 90% of amplitude
Power Consumption
3.3
0.5
RF Output
Start Time
Signal [standard]
Load
Signal Level (Vol)
Signal Level (Vol)
Signal Level (Voh)
Signal Level (Voh)
Duty Cycle
Tuning Range
2.4
3.5
45
55
Fixed OCXO; No adjust
%
15
0.4
0.5
VDC
1
HCMOS
pF
VDC
with Vs=3.3V
with Vs=5.0V
with Vs=3.3V
with Vs=5.0V
@ (Voh-Vol)/2
s
Frequency Tuning (EFC)
Page 2 of 6
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Absolute Maximum Ratings
Supply Voltage (Vs)
Output Load
6.5
50
VDC
pF
Operable temperature range implies the
device will continue to operate with no long-
term damage to unit; however, it will not be
specification compliant outside the operating
temperature range.
with Vs=3.3 & 5.0 VDC
Operable Temperature Range
-55
+95
°C
Environmental and Product Classification
Shock (Endurance)
Sine Vibration (Endurance)
Random Vibration (Endurance)
Humidity
Seal
Altitude
Resistance to Soldering Heat
Terminal Strength
Moisture Sensitive Level
RoHS
Storage Temperature Range
Weight
MIL-STD-202, Method 213, Condition J, 30g 11 ms
MIL-STD-202, Method 201 and 204, Condition A, except 5g to 500 Hz, 1 sweep each axis
MIL-STD-202, Method 214, Condition I-D
MIL-STD-202, Method 103, Condition B, 100% rh
MIL-STD-202, Method 112, Condition D, hermetic, washable
MIL-STD-202, Method 105, sea level to space
MIL-STD-202, Method 210, Condition A,B,C
MIL-STD-202, Method 211, Condition C (5 bends at 45
o
, 2 lbs)
1
6 (fully compliant)
-55
+125
25
°C
g
Page 3 of 6
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
10
10
MTIE(s)
10
10
10
10
-6
Plot of MTIE (s)
GR1244
1mHz
3mHz
No Filter
-7
-8
-9
-10
-11
10
0
10
1
10
2
tau(s)
Plot of TDEV (s)
10
3
10
4
10
5
10
10
10
TDEV(s)
10
10
10
10
-7
-8
-9
GR1244
1mHz
3mHz
No Filter
-10
-11
-12
-13
10
0
10
1
10
2
tau(s)
10
3
10
4
10
5
Page 4 of 6
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Outline Drawing / Enclosure
Through hole
Package configuration A
Height “H”
0
18.2 max
Pin Length “L”
4.5 mm min
Additional height options available contact
factory .
Note lower height reduces stability
Pin Connections
1,2
3
No Connect
Supply Voltage Input (VS)
RF Output
Ground (Case)
4
5
Dimensions in mm
Surface mount
Package configuration B
Height
“H”
1
20 max
Pin Length “L”
n/a
Additional height options available contact
factory .
Note - lower height reduces stability
Pin Connections
1,2,4,5,6,7,
11,12,13
3
8
9,10
No Connect
Supply Voltage Input (Vs)
RF Output
Ground (Case)
Page 5 of 6
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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