OCXO (Oven Controlled Crystal Oscillators)
+5.0 V
OC14T5A, OC14T5GA (RoHS version), HCMOS Square Wave
Full size 4 pin DIP full metal package
+5.0 V D.C supply Voltage
15 pF load HCMOS square wave output
AT-cut crystal
Voltage control (Electronic Frequency Tuning) on pin 1
General Specifications
( 10 MHz at+25°C, at +5.0 V Vcc and +2.5 V Vcon)
Output Wave Form
Frequency Range
Type of Crystal Cut Used
Supply Voltage (Vcc)
Initial Calibration Tolerance
MERCURY
Since 1973
Frequency Stability
vs
Operating Temperature Range
(custom spec. on request)
Aging
Short Term Stability
Supply Voltage ±0.2V Variation
Load ±5% variation
Warm-up time (at +25°C)
Freq. Deviation Range
Control Voltage Range
Transfer Function
Input Impedance
EFC Linearity
HCMOS Square Wave. Wave form code is “T”
1.25 MHz ~100.0 MHz.
Note: 40 MHz max. for RoHS version
AT-cut.
Use “A” for crystal code.
+5.0 V ±0.2 V (voltage code is “5”)
±0.5 ppm max. at the time of shipment. Vcon=+2.5V
Operating
0°C to +60°C
-20°C to +70°C
-40°C to +85°C
Temperature
Best Stability
±0.025 ppm
±0.05 ppm
±0.1 ppm
Available
Typical Stability
±0.2 ppm
±0.3 ppm
±0.5 ppm
< ±0.7 ppm first year. < ±4.0 ppm over 10 years.
<1 E
-10
(0.1 sec to 30 sec.); typical 5 E
-11
at 1 sec.
< ±0.1 ppm
< ±0.01 ppm
3 minutes max. Within ±0.1 ppm of its reference frequency.
±4 ppm min. Referenced to fo at +25°C
0.0 V to 5.0 V
Positive: Increasing control voltage increases output frequency.
47 K ohms min.
±10% max.
1.5 Watts max. at steady-state. 2.5 Watts max. at turn-on.
10 LS
50% ±10%
+4.5 V min
+0.4 V max.
7 nS max. ( measured at 20%
⇄
80% of waveform.)
1 Hz
-70 dBc
10 Hz
-100 dBc
100 Hz
-130 dBc
1 KHz
-140 dBc
10 KHz
-145 dBc
Power
Output
Offset
10 MHz at static
condition
Storage Temperature
Phase
Noise
Shock
Vibration
Voltage Control
on pin 1 (EFC)
(Electronics
Frequency
Tuning)
Power Dissipation (at +25°C)
Load (Fan Out)
Duty Cycle (measured at 1/2Vcc)
Output Voltage Logic High (V
OH
)
Output Voltage Logic Low (V
OL
)
Rise and Fall Time
-65°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: Aug 20, 2006
Rev. 1
MERCURY
www.mercury-crystal.com
OCXO (Oven Controlled Crystal Oscillators)
+5.0 V
OC14T5A, OC14T5GA (RoHS version),
HCMOS Square
OC14T5A Test Circuit:
Frequency counter
T2
Oscilloscope
A
14
1
0.1uF
+
MERCURY
Since 1973
T1
90%
50%
8
7
15 pF
-
+
Vcc +
V
-
10%
-
V control
Tr
Tf
Duty Cycle =
T1
T2
*100%
OC14T5A Package Dimensions and Pin Connections:
Pin 1: Voltage Control (EFC) Pin 7: Ground / Case
Pin 8: Output
Pin 14: Supply Voltage
unit mm [inches]
Square corner is pin No. 1
Part Number Format and Example:
Example:
OC14T5GA-10.000-0.1/-20+70
OC 14
T
5
G
A
—
dash
10.000
—
dash
0.1
⁄
-20+70
slash
:
“OC” Product Prefix for OCXO
:
Package type. “14” for 4 pin DIP.
:
Output wave form code. “T” for HCMOS square wave.
:
Supply voltage code. “5” for +5.0V;
:
“G” for RoHS compliant equivalent,” ”(blank) for non-RoHS part.
:
Crystal type. “A” for AT-cut crystal;
:
Frequency in MHz;
:
Frequency stability in ppm;
:
Operating temperature range: -20°C to +70°C in this case.
MERCURY
Page 2 of 2
Date: Aug 20, 2006
Rev. 1
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