EX-240 Datasheet, PDF (1/2 Pages) Vectron International, Inc – Oven Controlled Crystal Oscillators (OCXO’s)

Oven Controlled Crystal Oscillators (OCXO’s)
EX-240 (EMXO™)
Performance Characteristics
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)
Parameter
Characteristics
Frequency Range: 10 to 20.48 MHz
Package Size:
See next page for drawings and dimensions (reduced height option is available)
Supply Voltage: (C) +5 Vdc ±5%, (D): +3.3 Vdc ±5%
Supply Current (Steady State):
<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)
Turn-on Current:
<500 mA with +5Vdc supply, <600 mA with +3.3 Vdc supply
Output Type:
(A) HCMOS
Level "0" and "1":
<0.4 Volts, >0.9 Vdd
Rise/Fall Time (10-90%):
<7 ns
Symmetry (Duty Cycle):
50/50 ±10% (at 50% Vdd)
Output Type:
(H) +3 dBm minimum into 50 ohms
Harmonics:
- 20 dBc
Spurious:
- 60 dBc
Temperature Stability:
B-108 = ± 10 ppb over 0°C to +50°C
C-208 = ± 20 ppb over 0°C to +70°C
(Note: Tighter stabilities and wider temperature D-308 = ± 30 ppb over -20°C to +70°C
ranges are available, please consult factory.) F-508 = ± 50 ppb over -40°C to +85°C
Aging (10MHz Typical): <1x10^-9 /day average, <1x10^-7 / year average, <1x10^-6 /10 years
Short-Term Stability (Allan Deviation):
<1x10^-10, 0.1 seconds to 10 seconds
Phase Noise:
(typical at 10 MHz, Static Condition)
Offset
10 Hz
100 Hz
1 kHz
10 kHz
100 kHz
Phase Noise
-100 dBc/Hz
-130 dBc/Hz
-140 dBc/Hz
-145 dBc/Hz
-150 dBc/Hz
Frequency vs. Supply:
<2.5x10^-9 per percent change
Warm-up (Restabilization):
(frequency relative to that 1 hour after turn-on,
following 24 hours off time, at +25°C)
<±1x10 ^-6
<±1x10^{- 7}
Standard
60 seconds
120 seconds
Optional (consult factory)
45 seconds
90 seconds
Electrical Frequency Adjust: >± 1ppm range with 0 to Vdd input voltage
Acceleration Sensitivity:
(10 MHz)
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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