OCXO (Oven Controlled Crystal Oscillators) +5.0 V; +12 V
OC31E Series 50 ohm Load Sine Wave
MERCURY
Since 1973
Mercury OC31E is 36.2x27.2 mm 5 pin solder sealed metal pacakge
with 25.4x17.8 mm pin-to-pin spacing high stability low aging OCXO.
Besides standard AT cut crystal, users can also choose SC cut crystal
for better performance. HCMOS square wave output is available as OC31T series.
OC30E series: Same package size as OC31E but with different pin configurations.
General Specifications ( 10 MHz at+25°C, at specified Vcc and +2.5 V Vcon)
Output Wave Form
Frequency Range
Sine wave. Wave form code is “E”
10 MHz ~100.0 MHz
AT-cut. Use “A” for crystal code or SC-cut: use “S” for crystal code.
Type of Crystal Cut Used
SC has better performance but higher cost. See technical note TN-031.
+5.0 VD.C ±5% (voltage code is “5”); +12.0 V D.C ±5% (voltage code is “12”)
±0.5 ppm max. at time of shipment; Vcon=+2.5V
Supply Voltage (Vcc)
Initial Calibration Tolerance
Best Stability
For AT crystal
For SC crystal
0°C to +60°C
±0.03 ppm
±0.01 ppm
-20°C to +70°C
±0.08 ppm
±0.02 ppm
-40°C to +85°C
±0.2 ppm
±0.03 ppm
Operating Temperature Range
(custom spec. on request)
Aging (after 72 hours of AT:±3 ppb max./day; ±0.5 ppm max./first year;±3 ppm max. over 10 years.
continuous operation)
SC: ±2 ppb max./day; ±0.1 ppm max./first year;±0.5 ppm max. over 10 years.
Supply Voltage ±5% Variation
±20 ppb max.
Load ±5% variation
±20 ppb max.
AT: 3 minutes max. Within ±0.5 ppm of its reference frequency.
SC: 1 minute max. Within ±0.1 ppm of its reference frequency.
Warm-up time (at +25°C)
Freq. Deviation Range
AT: ±5 ppm min. ±20 ppm max.;
SC: ±0.5 ppm min, ±2 ppm max.
Referenced to fo at +25°C and over
operating temperature range.
Control Voltage Range
Transfer Function
Input Impedance
2.5 V ± 2.0 V
Positive: Increasing control voltage increases output frequency.
100 K ohms min.
EFC Linearity
Power Dissipation (at +25°C)
Output Level
±10% max.
Power
Output
1.2 Watts max. at steady-state; 3.5 Watts max. at turn-on.
+3 dBm typical; +8 dBm max. with 50Ω load
Harmonic
Spurious
-30 dBc min.
-75 dBc min.
Reference Voltage
Offset
+4.0 VD.C.±0.3 V D.C. or custom.
1 Hz
10 Hz
100 Hz
1 KHz
10 KHz
Phase
Noise
10 MHz AT-cut XTAL
-75 dBc
-100 dBc
-130 dBc
-140 dBc
-150 dBc
10 MHz SC-cut XTAL
-85 dBc
-120 dBc
-140 dBc
-145 dBc
-150 dBc
Storage Temperature
Shock
-55°C to +125°C
2000 G’s, 0.3 ms ½ sine
10 to 2000 Hz / 10 G’s
Vibration
MERCURY
www.mercury-crystal.com
Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail: sales-tw@mercury-crystal.com
U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail: sales-us@mercury-crystal.com
MERCURY
Page 1 of 2
Date: July 20, 2006
Rev. 0