OCXO (Oven Controlled Crystal Oscillators)
+5.0V; +12V
OC22T Series
HCMOS Square Wave
Mercury OC22T is 50.8X50.8 mm 7 pin solder sealed metal pacakge with
38.1X38.1 mm pin-to-pin spacing high stability low aging OCXO. SC cut
crystal is standard for OC22 . ±0.4 ppb stability and ±150 ppb total aging
over 10 years make the OC22 ideal for base stations, digital switching ,
instrumentation and frequency synthesizers. 50 ohm load sine output is
available as OC22E series.
General Specifications
( 10 MHz at+25°C, at specified Vcc and +2.5 V Vcon)
MERCURY
Since 1973
Voltage Control
on pin 1 (EFC)
(Electronics
Frequency
Tuning)
HCMOS square wave. Wave form code is “T”
5.0 MHz ~20.0 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.
Supply Voltage (Vcc)
+5.0 V
D.C
±5% (voltage code is “5”); +12.0 V
D.C
±5% (voltage code is “12”)
Initial Calibration Tolerance
±0.1 ppm max. at time of shipment; Vcon=+2.5V, at +25°C
Best Stability
0°C to +60°C
-20°C to +70°C
-40°C to +85°C
Operating Temperature Range
For
AT
crystal
±50 ppb
±0.1 ppm
±0.2 ppm
(custom spec. on request)
For
SC
crystal
±0.4 ppb
±5 ppb
±15 ppb
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:
±0.5 ppb max./day; ±50 ppb max./first year;±150 ppb max. over 10 years.
Supply Voltage ±5% Variation
±1 ppb max.
Load ±5% variation:
±1 ppb max.
AT:
1 minute max. Within ±0.2 ppm of its reference frequency.
Warm-up time (at +25°C)
SC:
5 minute max. Within ±10 ppb of its reference frequency.
AT:
±5 ppm min. ±20 ppm max.;
Referenced to fo at +25°C and over
Freq. Deviation Range
SC:
±0.5 ppm min, ±1 ppm max.
operating temperature range.
Control Voltage Range
2.5 V ± 2.0 V
Frequency Stability
vs
Transfer Function
Positive: Increasing control voltage increases output frequency.
100 K ohms min.
EFC Linearity
±20% max.
1.0 Watts max. at steady-state; 4.5 Watts max. at turn-on.
15 pF HCMOS max.
50% ± 5%. (measured at 50%Vcc)
+4.5 V min.
+0.5 max.
5 nS max. (measured at 20%
⇄
80% of waveform)
+4.0 V
D.C
±0.3 V
D.C
. or custom.
1 Hz
-75 dBc
-90 dBc
10 Hz
-100 dBc
-120 dBc
100 Hz
-130 dBc
-140 dBc
1 KHz
-140 dBc
-150 dBc
10 KHz
-150 dBc
-150 dBc
Input Impedance
Power Dissipation (at +25°C)
Load (Fan out)
Duty Cycle
Output Voltage Logic High (V
OH
)
Output Voltage Logic Low (V
OL
)
Output
Rise and Fall Time
Reference Voltage Output
Phase
Noise
Offset
10 MHz AT-cut XTAL
10 MHz SC-cut XTAL
Output Wave Form
Frequency Range
Power
Storage Temperature
Shock
Vibration
-55°C to +125°C
2000 G’s, 0.3 ms �½ sine
10 to 2000 Hz / 10 G’s
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
MERCURY
www.mercury-crystal.com
MERCURY [ MERCURY UNITED ELECTRONICS INC ]
