OC31T Datasheet, PDF (1/2 Pages) Mercury United Electronics Inc – Mercury OC31T is 36.2x27.2 mm 5 pin solder sealed metal pacakge

OCXO (Oven Controlled Crystal Oscillators) +5.0V; +12V
OC31T Series
HCMOS Square Wave
MERCURY
Since 1973
Mercury OC31T 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. 50 ohm load sine output is available as OC31E series.
OC30T series: Same package size as OC31T but with different pin configurations.
General Specifications ( 10 MHz at+25°C, at specified Vcc and +2.5 V Vcon)
Output Wave Form
HCMOS square wave. Wave form code is “T”
Frequency Range
1.25 MHz ~100.0 MHz
Type of Crystal Cut Used
AT-cut. Use “A” for crystal code or SC-cut: use “S” for crystal code.
SC has better performance but higher cost. See technical note TN-031.
Supply Voltage (Vcc)
Initial Calibration Tolerance
+5.0 V _D.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, at +25°C
Operating Temperature Range
(custom spec. on request)
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
Aging (after 72 hours of
continuous operation)
AT:±3 ppb max./day; ±0.5 ppm max./first year;±3 ppm max. over 10 years.
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.
Warm-up time (at +25°C)
AT: 3 minutes max. Within ±0.5 ppm of its reference frequency.
SC: 1 minute max. Within ±0.1 ppm of its reference frequency.
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 2.5 V ± 2.0 V
Transfer Function
Positive: Increasing control voltage increases output frequency.
Input Impedance
100 K ohms min.
EFC Linearity
±10% max.
Power Power Dissipation (at +25°C)
+5.0 V units: 200 mA max. at steady-state; 500 mA max. at turn-on.
+12.0 V units: 120 mA max. at steady-state; 250 mA max. at turn-on.
Load (Fan out)
15 pF HCMOS max. Duty Cycle (measured at 50%Vcc) 50% ± 10%
Output Voltage Logic High (V_OH)
Rise and Fall Time
+4.5 V min.
Output Voltage Logic Low (V_OL)
5 nS max. (measured at 20% ⇄ 80% of waveform)
+0.5 max.
Output
Reference Voltage Output
Phase
Noise
Offset
10 MHz AT-cut XTAL
10 MHz SC-cut XTAL
+4.0 V _D.C±0.3 V _D.C. or custom.
1 Hz
10 Hz
100 Hz
-75 dBc
-100 dBc -130 dBc
-85 dBc
-120 dBc -140 dBc
1 KHz
-140 dBc
-145 dBc
10 KHz
-150 dBc
-150 dBc
Storage Temperature
-55°C to +125°C
Shock
2000 G’s, 0.3 ms ½ sine
Vibration
10 to 2000 Hz / 10 G’s
MERCURY www.mercury-crystal.com
Taiwan: TEL [phone], FAX [phone], e-mail: [e-mail]
U.S.A.: TEL [phone], FAX [phone], e-mail: [e-mail]
MERCURY
Page 1 of 2
Date: July 20, 2006
Rev. 0