CRYSTAL OSCILLATORS
Data Sheet 1137A
Rev. A
O-A25HXXXXYYX-X
Low Power Consumption, Low Cost
AT-cut OCXO in miniature 20x20 mm Package
Product Data Sheet
Features
•
AT-cut crystal
•
Low Power Consumption
•
Fast Warm-up Time (2 minutes)
•
Low Cost
•
Hermetically sealed package
H
Applications
•
Ø0.018 (0,46 mm)TYP
Instrumentation
•
0.800 SQ. (20,4 mm)
Battery powered equipment
•
Telecommunication Systems
3
4
•
Data Communications
•
GPS
•
COTS/Dual use
0.600 (15.24 mm)
2
1
5
Vcc
0.600 (15,24 mm)
Vc
3 (5)
1
Stand-offs location may vary.
OUTPUT
Vref 2
DUT
4
Height, H
Code
5 (3)
0.4" (10,2 mm)
4
10K
0.5" (12,7 mm)
5
357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881
Email: nelsales@nelfc.com www.nelfc.com
CRYSTAL OSCILLATORS
Data Sheet 1137A
O-A25HXXXXYYX -X
Rev. A
Parameter
Symb
Condition
Min
Typ
Max
Unit
Note
Absolute Maximum Ratings
Vcc
-0.5
5.5
V
Vcc = 5 V
Input Break
Down Voltage
Ts
-40
85
Storage temper.
°C
To
-40
85
Operating temper.
°C
Vc
-1
6
V
Control Voltage
Electrical (6)
F
8.0
10.000
20.000
MHz
*
Frequency
ΔF/F
vs. Temp.
100
ppb
See chart below
Frequency stability
vs. Supply
2
5
ppb/5%Vcc
per day
2E-9
after 30 days
Aging
per year, first year
2E-7
10 years
1E-6
1*
.1s to 1s
5E-11
Allan Variance
1Hz
-85
dBc/Hz
2*
SSB Phase Noise
10 Hz
-115
-110
100 Hz
-145
-140
-150
1 KHz
-155
10 KHz
-165
-160
100 KHz
-165
-160
After 30 minutes
±30
ppb
24 hrs off
Retrace
worst direction
±2.0
ppb/G
G-sensitivity
Vcc
4.75
5.0
5.25
V
See chart below to specify
Input Voltage
3.165
3.30
3.465
P
steady state, 25°C
0.65
0.6
W
Still air 3*
Power consumption
steady state, -20°C
1.0
start-up
2.5
2.7
Subharmonics
none
dBc
Spectral Purity
Spurious
-80
Harmonics
-35
-30
10KOhm//15pF (HCMOS/TTL),
Output Code T
Load
AC-coupled 50 Ohm (Sine-wave)
Output Code S
τ
to 0.1ppm accuracy
90
120
seconds
Warm-up time
+5
+7
dBm
Output Code S
Output Power
Voh
0.7 Vref
V
Output Code T
Logic 1 (CMOS)
Vol
0.1 Vref
V
Output Code T
Logic 0 (CMOS)
Vc
0
Vref
V
4*
Control voltage
Vref
4.5
V
5 V supply
Reference Voltage
3.0
3.3 V supply
from nominal F, 10
±1.5
±2.5
ppm
5 V supply
Pull range
MHz
±1.0
±1.7
3.3 V supply
Monotonic, posit.
1.2
ppm/V
5 V supply
Deviation slope
10 MHz
1.2
3.3 V supply
Zin
At Vc pin
10
KOhm
Input impedance
Fm
150
Hz
Modulation
bandwidth
Vc0
@25°C, Fnom.
Vref/2- Vref/2 Vref/2 +
V
5*
Setability
0.25
0.25
Vc = Vref/2 @25°C
±250
ppb
10 MHz
Initial Calibration
357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881
Email: nelsales@nelfc.com www.nelfc.com
CRYSTAL OSCILLATORS
Data Sheet 1137A
O-A25HXXXXYYX -X
Rev. A
Environmental and Mechanical
-20°C to 70°C Standard, Other options – see chart below
Operating temp. range
Per MIL-STD-202, 30G, 11ms
Mechanical Shock
Per MIL-STD-202, 5G to 2000 Hz
Vibration
260°C for 10s Max leads only
Soldering Conditions
Electrical Connections
Pin #1-- Vc ; Pin#2 – Vref; Pin #3 – Vcc; Pin #4 – Output; Pin #5 - GND
Pin Out Type A
Pin #1-- Vc ; Pin#2 – Vref; Pin #3 – GND; Pin #4 – Output; Pin #5 - Vcc
Pin Out Type B
Notes:
1. Aging rates are proportional to the operating frequency. Pull range will be adjusted accordingly to provide for
lifetime possibility to set on frequency
2. Close to the carrier phase noise deteriorates with increase in frequency.
3. Power consumption listed in the table is for 10.000 MHz, Sine-wave output, 0.5" height unit. With increase in
upper operating temperature, the power consumption will increase about 60 mW per 5°C. 0.4" units will have about
10% more power consumption.
4. If Vref is not used for adjusting the frequency, Vc range can be increased to 5.0 V with either Vcc option.
5. The Vc input may or may not be internally biased to roughly Vref/2. If internal bias is needed – it has to be
specified on PO.
6. All parameters, unless otherwise specified, are at nominal conditions, ie: T=25°C, Nominal Vcc & Nominal Load.
357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881
Email: nelsales@nelfc.com www.nelfc.com
CRYSTAL OSCILLATORS
Data Sheet 1137A
O-A25HXXXXYYX -X
Rev. A
Creating a Part Number
O -
A 25 H
X
X
XX
YY
X - X
10.000 MHz
OCXO
AT-cut crystal
Environmental
Package Code
Code
Specification
25 5 pin 20x20mm
L
Contains a level of lead
that is in excess of
RoHS directive and is
Height code per drawing
not designed for reflow
R
RoHS compliant, not
Supply Voltage
designed for reflow
Code
Specification
Pinout Type
0
5 V TYP
A
3.3 V TYP
Code
Specification
A
Type A per table
B
Type B per table
Output
Code
Specification
S
Sinewave
Temperature Stability (±)
Temperature Range
T
HCMOS/TTL
Code
In 5°C steps **
Code
Specification
First letter
Lowest temperature from A = -40°C
1x10-7
17
Second letter
Highest temperature to Z = 85°C
5x10-8
58
Examples
Yx10-Z
YZ
IS
0°C to 50°C
GU
-10°C to 60°C
EW
-20°C to 70°C
Not all combinations are available – consult factory
**Temperature Code Table
Letter
Temp
Letter
Temp
Letter
Temp
Letter
Temp
Letter
Temp
Letter
Temp
°C
°C
°C
°C
°C
°C
-40
-15
10
35
60
85
A
F
K
P
U
Z
-35
-10
15
40
65
B
G
L
Q
V
-30
-5
20
45
70
C
H
M
R
W
-25
0
25
50
75
D
I
N
S
X
-20
5
30
55
80
E
J
O
T
Y
357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881
Email: nelsales@nelfc.com www.nelfc.com
