QUARTZ
EURO
OCXO - OC22T12A SERIES
AT-Cut Crystal - Square Wave - 12.0 Volts
Frequency Range 5.0MHz to 20.0MHz
50.8 x 50.8 x 16.0mm 7 pin metal, solder-sealed package
Supply Voltage 12.0 Volts
AT-Cut Crystal
Squarewave Output
·
EFC (Voltage control) as standard
OUTLINE & DIMENSIONS
DESCRIPTION
OC22T12A series oven-controlled crystal oscillators are close
tolerance OCXOs with good phase noise performance.
SPECIFICATION
Crystal Cut:
AT-cut
Output Waveform:
Supply Voltage:
Square Wave
+12.0 VDC ±0.5V
5.0MHz to 20.0MHz
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:
CON
±0.1ppm max.(at V
+2.5V)
±0.05ppm
±0.1ppm
±0.2ppm
<±1.0ppb for ±5% change
±3.0ppb max per day
±0.5ppm per first year
±3.0ppm over 10 years
<±1.0ppb for ±5% change
vs. Load Change:
Warm-up Time:
TEST CIRCUIT
1 minutes max. to within
±0.2ppm of nominal freq.
Voltage Control
CON
Control Voltage Centre:
Freq. Deviation Range:
+2.5 Volts (V
)
±5.0ppm min., ±20ppm max.
ref. to 25°C and O.T.R.
2.5V ±2.0Volts
Positive: Increasing control
voltage increases output
frequency
Control Voltage Range:
Transfer Function:
Input Impedance:
EFC Linearity:
100k minimum
±10% maximum
Squarewave = 15pF
Sine Wave = 50W
Including probe and fixture
Power Dissipation:
2.0W max. steady state
6.0W max. at turn on
Output
PART NUMBER FORMAT
Example:
Load:
15pF HCMOS
+4.5V minimum
0.5V maximum
Output Logic HIGH:
Output Logic LOW:
Duty Cycle:
OC22GT12A-10.000-0.10/-20+70
50%±10%
Rise/Fall Time:
5ns max (20%~80%)
Frequency dependant
+4.0±0.3VDC or custom
OCXO Package: OC22
RoHS Compliance
Reference Voltage:
G: RoHS Compliant
Envionmental
Storage Temperature:
Shock:
Blank: Non-compliant
T: Output Squarewave
12: Supply Voltage 12.0Volts
A: AT-Cut Crystal
-55° to +125°C
2000g, 0.3ms ½ sine
10 ~2000Hz / 10g
Vibration:
Nominal Frequency 10.0MHz
Stability in ±ppm
PHASE NOISE (at 10MHz)
Operating Temperature Range °C
Lowest Temperature/Highest Temperature
Offset
1Hz
dBc/Hz
-75
10Hz
-100
100Hz -130
1kHz
10kHz
-140
-150
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 Email: info@euroquartz.co.uk www.euroquartz.co.uk