OCXOWST
Oven Controlled Crystal Oscillator
HC-MOS Output
3.3 V Power Supply
FREQUENCY STABILITY
FREQUENCY STABILITY
OVERALL INCLUDED LONG
TERM AGING 15 YEARS:
<
±
4.6 ppm
OCXOWST-D
TEMP. RANGE *
0 to +70 °
C
OCXOWST-C
TEMP. RANGE *
Vcc = 3.3 V
±
0.2 V
*
< 110 mA @ +30 °
*
C
< 160 mA @ -20 °
*
C
-40 to +85 °
C
Stratum 3
up to 20 MHz
NOTE 1
HOLDOVER STABILITY DURING
24 HOURS INCLUDING LOAD,
SUPPLY VOLTAGE AND TEM-
PERATURE VARIATION:
<
±
0.28 ppm (0.56 ppm p-to-p)
POWER SUPPLY
SUPPLY INPUT:
INPUT CURRENT :
INPUT CURRENT :
FREQUENCY CONTROL RANGE
CONTROL VOLTAGE:
INTERNAL CALIBRATION:
Not applicable, pin 1 must be
connected to ground (see note 2)
<
±
1 ppm *
NOTE 2
On request:
Possibility of frequency adjustment with control
voltage.
OUTPUT
OUTPUT SIGNAL:
SYMMETRY:
RISE AND FALL TIME:
LEVEL „0“ AND „1“:
FAN OUT (LOAD):
HC-MOS compatible
45 (min.) /55 (max.) % @ Vcc / 2
*
tr < 7ns tf < 7 ns
*
< 0.4 V > Vcc –0.5 V
10 LS or 47pF max.
ENVIRONMENT
OPERABLE TEMP. RANGE:
STORAGE TEMP. RANGE:
VIBRATION:
SHOCK:
PACKAGE:
PACKAGE HEIGHT:
-40 to +85 °
C
-65 to +125 °
C
10 to 2000 Hz / 10 g
2000 g, 0.3 ms, ½ sine
DIL 14, 4 pins, GND to case
8 mm
(see packaging info)
MARKING EXAMPLE
OCXOWST-C
12.800 MHz
Type
Frequency
(PIN 1)
Spec No.
Date Code
Piece No.
01.25
12
WARM-UP
∆
F/F:
CURRENT:
within spec after 30s @ 0° *
C
< 250 mA during 30s
ORDERING INFORMATION EXAMPLE
O C X O WST
Oscillator Type
OCXO
= Oven Controlled
Crystal Oscillator
Oscillator Version
W
= low power voltage 3.3V
ST
= Stratum 3 application
Temperature Range
C
= -40 to +85°
C
D
= 0 to +70°
C
-
C
12.8 MHz
xxx
N° of
customer
spec.
MISCELLANEOUS
SHORT TERM STABILITY:
PHASE NOISE (BW = 1Hz):
(typical, @ 10MHz in static
conditions)
*
< 5 E-10 0.1 s to 30 s
Typical 5 E-11 @ 1 s
1 Hz : - 70 dBc / Hz
10 Hz : -100 dBc / Hz
100 Hz : -130 dBc / Hz
1 kHz : -140 dBc / Hz
Oscillator output
frequency
Customer’s specification on request
STANDARD FREQUENCIES (MHz)
12.8000
16.3840
19.4400
20.0000
DATE:
June 2003
In accordance with our policy of continuous development and improvement,
we reserve the right to modify the design or the specifications of our products without prior notice.
Headquarters:
Micro Crystal
Div. of ETA SA
Mühlestrasse 14
CH-2540 Grenchen
Switzerland
Revision No.: 2
Page 1/2
Tel.
Fax
Internet
Email
+41 32 655 82 82
+41 32 655 80 90
www.microcrystal.ch
sales@microcrystal.ch
OCXOWST
Oven Controlled Crystal Oscillator
HC-MOS Output
3.3 V Power Supply
Application and Test Circuit:
Adjustment with voltage
HC-MOS
TTL
Stratum 3
up to 20 MHz
Adjustment with resistor
HC-MOS
TTL
Vcc
Vcc
Oscilloscope
or
Counter
R load
2k
Oscilloscope
or
Counter
R load
2k
A
D1
14
8
D2
C load
*
15pF
A
D1
14
8
D2
C load
*
15pF
Vcc
V
1
Cd2
Cd1
Vc
7
D3
Vcc
V
1
Cd2
Cd1
Radj
(0–10kohms
)
7
D3
V
D4
low thermal
coefficient
D4
Waveform Output:
Waveshape TTL
tf
tr
Vcc
2.4V min.
Vcc - 0.5V min.
(Except 12V: 5V-0.5V min.)
Waveshape HC-MOS
tf
tr
Vcc
1/2 Vcc
1.4V
Gnd + 0.4V max.
Gnd
0.4V max.
Gnd
T1
T2
T1
T2
Duty Cycle
=
100
×
T
1
[
%
]
T
1
+
T
2
DATE:
June 2003
In accordance with our policy of continuous development and improvement,
we reserve the right to modify the design or the specifications of our products without prior notice.
Headquarters:
Micro Crystal
Div. of ETA SA
Mühlestrasse 14
CH-2540 Grenchen
Switzerland
Revision No.: 1
Page 2/2
Tel.
Fax
Internet
Email
+41 32 655 82 82
+41 32 655 80 90
www.microcrystal.ch
sales@microcrystal.ch
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