ROX5242T2 Datasheet, PDF (1/2 Pages) TEMEX – The ROX5242T2 belongs to a range of super single oven OCXOs designed

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ROX5242T2
The ROX5242T2 belongs to a range of super single oven OCXOs designed as a compact and smart frequency source and time keeping
reference for all synchronization systems, including precision positioning system bases equipment. These 52 x 42 mm package series of
oscillators are designed with 2 circuits: 1 circuit with the crystal enclosed in a hermetic oven and 1 circuit with the amplifier stage. This
structure enables an excellent stability versus temperature (±0.2 ppb). This high end OCXO is capable of replacing expensive Rubidium clocks
in SDH/SONET Stratum 2 applications.
Features
 Hold over below 5 µs over 24 hours,
including temperature change
 Standard frequencies: 10, 12.8, 13 and 15
MHz
 2 packages height : 14 mm and 19 mm
Applications
 Stratum 2 timing modules
 Time and frequency references
 Wireless Base Stations (GSM,
UMTS, CDMA, LTE)
 Instrumentation and broadcasting
52 x 42 mm
Standard Specifications
Parameter
Min.
Nominal frequency
Operating temperature range
-40
Frequency stability over temperature
Free-run accuracy over 20 years
Supply voltage stability
24 hours holdover performance
Hysteresis effect
Long term stability (Ageing)
Short term 1s to 10s integration time
Retrace effect at 25°C
Supply voltage (VCC)
Power consumption
Warm-up time
Harmonics
Start-up time
Oscillator output - Sinewave
5
Oscillator output – Compatible CMOS
Output voltage level high (VOH) 2.4
Output voltage level low (VOL)
Rise & fall time
Environmental
Vibration
Shocks (3 directions)
Storage temperature
-55
Typ.
5 - 15
Max.
85
±0.2
±0.04
±0.05
±5
0.1
±0.05
±8
±40
±0.002
±5
5
8
3.5
±8
-40
1
9
0.4
5
10
50
90
Unit
MHz
°C
ppb
ppm
ppb
µs
ppb
ppb/day
ppb/year
ppb/20 years
ppb
ppb
V
W
W
minutes
dBc
sec
dBm
Test Condition / Description
Standard frequencies: 10, 12.8, 13 and 15 MHz
Telcordia GR-1244 requirement is ± 4.6 ppm
±5% at 25°C
After 3 days of continuous power on, constant
load and no supply change and 50°C window in
operating temperature range, temperature
gradient ( 10 °C / hour)
Over -40 to +85°C, gradient 10°C / hour
After 1 week operation
After 24 hours off and 1 hour on
±5%. Other option 12V
During warm-up
Steady state at 25°C calm air
Within 10 ppb of prior steady state output
frequency at time of power-off. 24 hours on
min. + 24 hours off max.
Signal level with 50 Ω load
V
V
ns
g
IEC 68-2-06 test Fc-Severity 500/10
g
IEC 68–2-27 test Ea severity 50A
°C
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