EURO
QUARTZ
SC-Cut Crystal - Sine Wave - 12.0 Volts
Frequency Range 10.0MHz to 100.0MHz
36.2 x 27.7 x 16.0mm 5 pin metal, solder-sealed package
Supply Voltage 12.0 Volts
SC-Cut Crystal
Sine Wave Output
EFC (Voltage control) as standard
OCXO - OC31E12S
1.25MHz ~ 100.0MHz
OUTLINE & DIMENSIONS
DESCRIPTION
OC31E12S series oven-controlled crystal oscillators are close
tolerance OCXOs with excellent phase noise performance.
SPECIFICATION
Crystal Cut:
Output Waveform:
Supply Voltage:
Frequency Range:
Initial Calibration Tolerance:
Frequency Stability
over 0° to +60°C:
over -20° to +70°C:
over -40° to +85°C:
vs. Voltage Change:
vs. Ageing:
SC-cut
Sine Wave
+12.0 VDC ±0.5V
1.25MHz to 100.0MHz
±0.5ppm max.(at V
CON
+2.5V)
±0.01ppm
±0.02ppm
±0.03ppm
<±20ppb for ±5% change
±2.0ppb max per day
±0.1ppm per first year
±0.5ppm over 10 years
<±20ppb for ±5% change
1 minutes max. to within
±0.1ppm of nominal freq.
vs. Load Change:
Warm-up Time:
TEST CIRCUIT
Voltage Control
Control Voltage Centre:
Freq. Deviation Range:
Control Voltage Range:
Transfer Function:
Input Impedance:
EFC Linearity:
Power Dissipation:
Output
Output Level:
Harmonics:
Spurious:
Reference Voltage:
Envionmental
Storage Temperature:
Shock:
Vibration:
PHASE NOISE (at 10MHz)
Offset
1Hz
10Hz
100Hz
1kHz
10kHz
dBc/Hz
-85
-120
-140
-145
-150
+2.5 Volts (V
CON
)
±0.5ppm min., ±2ppm max.
ref. to 25°C and O.T.R.
2.5V ±2.0Volts
Positive: Increasing control
voltage increases output
frequency
100k minimum
±10% maximum
1.2W max. steady state
3.5W max. at turn on
+3dBm typ., +8dBm max.
into 50W load
-30dBc min.
-75dBc min.
+4.0±0.3VDC or custom
PART NUMBER FORMAT
Example:
Square wave output load: 15W
Sine Wave output load: 50W
OC31GE12S-10.000-0.02/-20+70
-55° to +125°C
2000g, 0.3ms ½ sine
10 ~2000Hz / 10g
OCXO Package: OC31
RoHS Compliance
G: RoHS Compliant
Blank: Non-compliant
E: Output Sine Wave
12: Supply Voltage 12.0Volts
S: SC-Cut Crystal
Nominal Frequency 10.0MHz
Stability in ±ppm
Operating Temperature Range °C
Lowest Temperature/Highest Temperature
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk
