OC14T3A Series Logic: HCMOS Wave Form: Square wave

OCXO (Oven Controlled Crystal Oscillator) OC14T3A Series
Logic: HCMOS
Wave Form: Square wave
MERCURY
Since 1973
y Full size 4 pin DIP full metal hermetically sealed package
y+3.3 V D.C supply Voltage
y HCMOS square wave output
y AT-cut crystal
y Voltage control (Electronic Frequency Tuning) on pin 1
General Specifications (at+25°C, at +3.3 V Vcc and +2.5 V Vcon, 15 pF load)
Frequency Stability
vs
Output Wave From
Frequency Range
Type of Crystal Cut
Supply Voltage (Vcc)
Initial Frequency Accuracy at +25°C
HCMOS square wave. Wave form code is “T”
1.0 MHz ~ 20.0 MHz. Higher frequencies are available.
AT-cut. Use “A” for crystal code.
+3.3 V ±0.15 V (voltage code is “3”)
< ±2 ppm of the nominal frequency at time of shipment.
Operating Temperature Range Best spec.
Typical Spec.
0°C to +60°C
±0.075 ppm
±0.2 ppm
-20°C to +70°C
±0.15 ppm
±0.3 ppm
-40°C to +85°C
±0.25 ppm
±0.5 ppm
Operating Temperature Range
(custom spec. on request)
Long Term Aging
< ±0.7 ppm first year. < ±4.0 ppm over 10 years.
Short Term Stability
<5 E -10 (0.1 sec to 30 sec at 0°C); typical 5 E -11 at 1 sec.
Supply Voltage ±0.15 V Variation
< ±0.1 ppm
Load ±10% variation
< ±0.01 ppm
< 100 mA at steady-state at +25°C. <250 mA at turn-on.
Warm-up time (at +25°C)
< 3 minutes. Within ±0.1 ppm of the unit output frequency.
Logic High “1”
2.8 V min. Reference to ground.
Logic Low “0”
0.4 V max. Referenced to ground.
Duty Cycle
40% ~ 60 % measured at 50% Vcc
Rise Time and Fall Time
7 n sec. max. (90% ↔ 10% Vcc)
Start-up Time
10 m sec. max.
Load
15 pF
Fanout
10 LS
Voltage
Control on
pin 1
(Electronics
Frequency
Tuning)
Power Dissipation
Phase Noise
Frequency Deviation Range
±4 ppm min.
Control Voltage Range
V control = 0.0 V to 3.3 V
Transfer Function
Positive: Increasing control voltage increases output frequency.
Input Impedance
> 47 K ohms
1 Hz offset
< -80 dBc / Hz
10 Hz offset
< -110 dBc / Hz
100 Hz offset
< -135 dBc / Hz
1 KHz offset
< -145 dBc / Hz
Storage Temperature
-65°C to +125°C
MERCURY
www.mercury-crystal.com
Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail: [email protected]
U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail: [email protected]
MERCURY
Page 1 of 2
Date: April 20, 2005
Rev. 0
CLOCK OSCILLATORS
Logic: Differential PECL
3HPL5761 Series
Wave Form: Square wave
Shock
MERCURY
Since 1973
2000 G’s, 0.3 ms ½ sine
Vibration
10 to 2000 Hz / 10 G’s
Inclusive of 25°C tolerance, operating temperature range, ±0.2 V input voltage variation, load change, aging at +25°C, shock and
vibration.
(1)
OC14T3A Test Circuit and Wave Form:
Frequency counter
T2
T1
Oscilloscope
A
+
-
Vcc +
V
-
14
8
1
7
90%
50%
0.1uF
15 pF
10%
+
-
V control
Tr
Tf
Duty Cycle =
T1
*100%
T2
OC14T3A Package Dimensions and Pin Connections:
Pin 1: Voltage Control Pin 7: Ground
Pin 8: Output
Pin 14: Supply Voltage
unit mm [inches]
Square corner is pin No. 1
Part Number Format and Example:
Example: OC14T3A-10.000-0.2/-20+70
Explanation: OCXO, 10.000 MHz, 4 pin DIP package, HCMOS output, +3.3 V supply voltage, frequency stability is ±0.2
ppm over -20 to +70°C.
"
"
"
": customer to specify
10.000
— 0.2 /
-20+70
n
o
p
q
n: Product series code o: Frequency in MHz p: Frequency stability in ppm
q: Operating temperature range in °C
OC14T3A
—
MERCURY
Page 2 of 2
Date: April 20, 2005
Rev. 0