Ultra Low Noise
Oven Controlled Crystal Oscillator
OX-174
OX-174
The OX-174 is a low phase noise, high-stability ovenized crystal oscillator in a 28 x 38 mm package. The oscillator has a noise floor
of -175 dBc/Hz, and typical ADEV below 2E-12 for t=0.1 to 100 s. The OX-174 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, OX-172 optimized for 1588 solutions,
and the OX-175 low phase noise, high frequency oscillator. The Microsemi design team will also help develop custom solutions
where performance optimization is required for specific applications. Please contact the factory for customization options.
Features
•
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•
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Reflow Process Compatible
Temperature Stability to 5 ppb
Frequency Range 5 to 20 MHz
Standard Frequency:10 MHz
CMOS and Sinewave Options Available
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Applications
Military Radar
Instrumentation and Test Equipment
Synthesizers
Military Communication Equipment
DRO references
Satellite Communications
Performance Specifications
Phase Noise Ordering Codes at 10 MHz , Sinewave Output
Frequency Offset (Hz)
1
10
100
1000
10,000
100,000
A
-95
-125
-150
-160
-170
-170
B
-100
-130
-155
-165
-170
-170
C (12V only)
-105
-135
-157
-167
-175
-175
D (5V only)
-105
-135
-157
-167
-172
-173
Unit
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Condition
Maximum values
All EFC settings
Phase Noise Ordering Codes at 10 MHz, CMOS Output
Frequency Offset (Hz)
1
10
100
1000
10,000
100,000
A
-95
-125
-150
-160
-160
-160
B
-100
-130
-155
-160
-165
-165
C
-105
-135
-157
-160
-165
-165
Unit
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Condition
Maximum values
All EFC settings
(5V only)
Page 1 of 6
Performance Specifications
Parameter
Min
Typical
2
1
1.5
1.8
2
Max
5
3
4
5
5
Units
E-12
E-12
E-12
E-12
E-12
Condition
0.1s tau
1 s tau
10 s tau
100 s tau
1000 s tau
Allan Deviation
@ 10MHz
For oscillators with TDEV and MTIE requirements please review the OX-172 datasheet.
Frequency Stabilities
1
(Stabilities listed for 10 MHz. For stabilities above 10 MHz values may degrade. Please contact factory)
Parameter
vs. Operating Temperature
Range (referenced to +25°C)
Min
-5
-10
Typical
Max
+5
-10
Units
ppb
ppb
Condition
-20 to +70°C
-40 to +85°C
For better stability please review the OX-171 datasheet.
Initial Tolerance
vs. Supply Voltage Change
vs. Load Change
vs. Aging / Day
vs. Aging / 1
st
Year
vs. Aging / Year (following years)
Retrace
2
Warm-up Time
-50
-2
-2
-0.5
-100
-30
-10
+50
+2
+2
+0.5
+100
+30
+10
5
ppb
ppb
ppb
ppb
ppb
ppb
ppb
minutes
to ±10ppb of final frequency ( 1 hour reading)
@ +25°C
at time of shipment, nominal EFC
V
S
±5%
Load ±5%
after 7 days operation
after 7days operation
Supply Voltage (Vs)
Parameter
Supply Voltage (Vs)
Min
4.75
11.4
Typical
5.0
12.0
Max
5.25
12.6
3.5
1.8
Units
VDC
VDC
Watts
Watts
Watts
Watts
Condition
ordering option D
ordering option B
during warm-up, all temperatures
steady state @ +25°C
steady state @ -40°C
steady state @ +85°C
time required to achieve 90% of amplitude
5 Volt only
Power Consumption
3.3
0.5
RF Output
Start Time
Signal
Load
Signal Level (Vol)
Signal Level (Voh)
Duty Cycle
Rise and Fall Time (Tr/Tf )
Signal
Load
Output Power
Harmonics
Spurious
+7
+4
50
+8
+5
+10
+7
-30
-80
3.5
45
55
10
Sine Wave
Ω
dBm
dBm
dBc
dBc
Vs=12VDC
Vs=5VDC
%
ns
@ (Voh-Vol)/2
15
0.5
1
HCMOS
pF
s
Page 2 of 6
Frequency Tuning (EFC)
Parameter
Tuning range
Linearity
Tuning Slope
Input Impedance
Bandwidth Modulation
Control Voltage Range
150
0.0
0.0
4.26
9.8
4.35
10
4.35
10
4.44
10.2
100
Min
±400
Typical
15
Max
±800
Units
ppb
%
Condition
(fixed frequency option available)
Positive
kOhm
Hz
VDC
VDC
VDC
VDC
with Vs=5.0 VDC
with Vs=12.0 VDC
with Vs = 5.0 VDC
with Vs =12 VDC
Reference Voltage Output (Vref )
Reference Voltage (Vref )
The OX-174 series can be configured without a voltage reference. Please contact the factory for ordering information.
Additional Parameters
Parameter
g-sensitivity
Min
Typical
Max
Units
1.5
Condition
ppb/g
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.
Weight
25
6.5
15.0
25
open
50
g
VDC
VDC
Ω
pF
with Vs= 5.0 VDC
with Vs= 12 VDC
Sinewave
CMOS
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.
Absolute Maximum Ratings
Supply Voltage (Vs)
Output Load
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
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
°C
Page 3 of 6
Outline Drawing / Enclosure
Through hole
Package configuration A
Height “H”
0
18.2 max
Pin Length “L”
4.5 mm min
Pin Connections
1
2
3
4
5
Electronic Frequency Control Input (EFC)
No Connect for Fixed frequency Oscillators
Reference Voltage (Vref )
Supply Voltage Input (Vs)
RF Output
Ground (Case)
Dimensions in mm
Surface mount
Package configuration B
Height
“H”
1
20.3 max
Pin Length “L”
n/a
Pin Connections
4,5,6,7,
11,12,13
1
2
3
8
9,10
No Connect
Electronic Frequency Control Input (EFC)
No Connect for Fixed frequency Oscillators
Reference Voltage (Vref )
Supply Voltage Input (Vs)
RF Output
Ground (Case)
Page 5 of 6
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