Oven Controlled Crystal Oscillators (OCXO’s)
EX-240 (EMXO™)
Description:
The EX-240 Series offers a ruggedized hybrid thick film construction in a low
profile, hermetically sealed 16 pin DDIL package, which can withstand severe
environmental conditions. This product series utilizes VI’s EMXO
TM
technology
resulting in excellent stability performance and fast warm-up with low power
consumption.
Features:
* Temperature Stability: to ±1 x 10-8 over 0°C to +50°C
* Acceleration Sensitivity: < 1 x 10 -9 / g Total Gamma
* Low power consumption: < 0.7 W @ +25°C
* Shock: 1,000g’s peak, 0.5 ms
* Vibration: 20g peak to 2 kHz (Sine), 30 Grms overall to 2 kHz (Random)
Performance Characteristics
Parameter
Frequency Range:
Package Size:
Supply Voltage:
Supply Current (Steady State):
Characteristics
10 to 20.48 MHz
See next page for drawings and dimensions (reduced height option is available)
(C) +5 Vdc ±5%, (D): +3.3 Vdc ±5%
<140 mA @ +25°C , <220 mA @ -40°C with +5V supply
<210 mA @ +25°C , <330 mA @ -40°C with +3.3V supply
(reduced current option is available)
<500 mA with +5Vdc supply, <600 mA with +3.3 Vdc supply
(A) HCMOS
<0.4 Volts, >0.9 Vdd
<7 ns
50/50 ±10% (at 50% Vdd)
(H) +3 dBm minimum into 50 ohms
- 20 dBc
- 60 dBc
B-108
= ± 10 ppb over 0°C to +50°C
C-208
= ± 20 ppb over 0°C to +70°C
D-308
= ± 30 ppb over -20°C to +70°C
F-508
= ± 50 ppb over -40°C to +85°C
<1x10
- 9
/day average, <1x10
- 7
/ year average, <1x10
-6
/10 years
<1x10
-10
, 0.1 seconds to 10 seconds
Offset
10 Hz
100 Hz
1 kHz
10 kHz
100 kHz
<2.5x10
- 9
per percent change
<±1x10
<±1x10
- 7
-6
Turn-on Current:
Output Type:
Level "0" and "1":
Rise/Fall Time (10-90%):
Symmetry (Duty Cycle):
Output Type:
Harmonics:
Spurious:
Temperature Stability:
(Note: Tighter stabilities and wider temperature
ranges are available, please consult factory.)
Aging (10MHz Typical):
Short-Term Stability (Allan Deviation):
Phase Noise:
(typical at 10 MHz, Static Condition)
Phase Noise
-100 dBc/Hz
-130 dBc/Hz
-140 dBc/Hz
-145 dBc/Hz
-150 dBc/Hz
Standard
60 seconds
120 seconds
Optional (consult factory)
45 seconds
90 seconds
Frequency vs. Supply:
Warm-up (Restabilization):
(frequency relative to that 1 hour after turn-on,
following 24 hours off time, at +25°C)
Electrical Frequency Adjust:
Acceleration Sensitivity:
(10 MHz)
>± 1ppm range with 0 to Vdd input voltage
1x10
-9
/g Total Gamma, standard
5x10
-10
/g available at 10 MHz (consult factory)
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
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Oven Controlled Crystal Oscillators (OCXO’s)
EX-240
Pin
1
2-4
8
9
13-15
16
240 Package Outline Drawing
Function
Frequency Control
N/C. Internal use ONLY
Case, Ground
Output
N/C
Supply
Pin numbers are for reference, only, they do not appear on unit
Reflow Profile
TEMPERATURE(°C)
OCXO
TIME(s)
Environmental Specifications (designed to meet)
Shock
-
Vibration (Sine)
-
Vibration (Random)-
Acceleration
-
Thermal Shock
-
Altitude
-
Seal
-
Humidity
-
1000g’s peak, 0.5 ms per MIL-STD-202, Method 213, Condition E
20g peak to 2 kHz per MIL-STD-202, Method 204, Condition D
30 Grms overall per MIL-STD-202, Method 214, Condition I-H
1000g per MIL-STD-202, Method 212, Condition C
50 cycles, -55C to +85C per MIL-STD 202, Method 107, Condition A-2
70,000 ft per MIL-STD 202, Method 105, Condition C
Hermetic per MIL-STD-202, Method 112, Condition C
90% RH per MIL-STD-202, Method 103, Condition A
Capabilities
VI can offer this series with screening and conformance inspection based upon MIL-PRF-55310 for Product level B. Also, a
reduced current option is available. Please contact your local VI representative or VI for details.
Ordering Information
EX
EX
= EMXO
Package
240
Supply Voltage
C
= 5.0 Vdc ±5%
D
= 3.3 Vdc ±5%
Output
A
= HCMOS
H
= + 3dBm sine
Temperature & Stability
B-108
= ± 10 ppb over 0°C to +50°C
C-208
= ± 20 ppb over 0°C to +70°C
D-308
= ± 30 ppb over -20°C to +70°C
F-508
= ± 50 ppb over -40°C to +85°C
Note: Tighter stabilities and wider temperature
ranges are available, please consult the factory.
240
–
C
A
F
–
5 0 8
A
–
12.800
MHz
Output Frequencies
10.000 MHz
16.384 MHz
10.230 MHz
19.440 MHz
12.800 MHz
20.000 MHz
13.000 MHz
20.480 MHz
Other Options
A
= Electrical Frequency Adjust (standard)
F
= Fixed Frequency, No Frequency Adjust,
Initial Accuracy at +25°C is ±1 ppm
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com 7Dec05
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