STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
10110 - Rev C
DESCRIPTION
The LXO oscillator has the highest accuracy and stability of
all STATEK oscillators. The design consists of a CMOS-
compatible hybrid circuit, packaged in a hermetically-sealed
metal DIP. Permanent, precision tuning of the oscillator is
accomplished by laser trimming the crystal after it has been
hermetically sealed in a ceramic package and connected to
the oscillator circuit. This method of fine tuning allows for
very tight calibration tolerance and eliminates the need for
a trimming capacitor, a major source of long-term frequency
drift. The specifications and characteristics of the LXO vary
with frequency. The characteristics of the 32.768 kHz
model are presented in this data sheet.
FEATURES
Low power consumption
Low aging
CMOS compatible
Double hermetically sealed package
Full military testing available
2.5V to 15V operation available
APPLICATIONS
Industrial, Computer & Communications
General purpose clock oscillator
Data Logger
Remote sensor
Liquid level sensing
Medical test and diagnostics
Military
Portable field communication
Military high speed modem
Flight recorder
LXO OSCILLATOR
10 kHz to 2.1 MHz
Low Power Crystal Oscillator
TM
B
C
PIN
NO.1
PIN
NO.14
PIN
NO.8
PIN
NO.7
G
F
E
H
D
A
J
I
DIM
INCHES
mm
A
0.810 MAX.
20.57 MAX.
B
0.510 MAX.
12.95 MAX.
C 0.300
0.005
7.62
0.13
D
0.600
0.005
15.24
0.13
E
0.430 TYP.
10.92 TYP.
F
0.240 MAX.
6.10 MAX.
G
0.040 TYP.
1.02 TYP.
H
0.150 MIN.
3.81 MIN.
I
0.018
0.002
0.46
0.05
J
0.070 TYP.
1.78 TYP.
* Position of bumps for reference only
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LX0-2.0MHz
PACKAGE DIMENSIONS
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
10110 - Rev C
SPECIFICATIONS: LXO 32.768 kHz
Specifications are typical at 25oC unless otherwise noted.
Specifications are subject to change without notice.
Supply Voltage (V
DD
)
5V 10% (3.3V available)
Calibration Tolerance*
A: .001% (10ppm)
(at 5V)
B: .0025%
C: .01%
Frequency Stability**
0
O
C to +50
O
C
-0.0025% Typ.
25ppm
-0.004%
MAX.
40ppm
-20
O
C to+70
O
C -0.007%
Typ.
70ppm
-0.01%
MAX.
100ppm
Voltage Coefficient
1 ppm/V Typ.
3 ppm/V MAX.
Current Consumption
See below
Aging
1 ppm/year Typ.
3 ppm/year MAX.
Shock
1000g, 1msec.,1/2 sine
3 ppm MAX.
Vibration
10g rms, 10-2000 Hz
3 ppm MAX.
Frequency Change vs.10% Output Load Change
1 ppm MAX.
Operating Temperature -10
O
C to +70
O
C Commercial
-40
O
C to +85
O
C Industrial
-55
O
C to +125
O
C Military
* Tighter tolerances available
** Does not include calibration tolerance.
(Positive variations small compared to negative variations.)
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ABSOLUTE MAXIMUM RATINGS
Supply Voltage V
DD
-0.3V to 7V
Storage Temperature
-55
O
C to +125
O
C
ELECTRICAL CHARACTERISTICS
LXO-32.768 kHz
All parameters are measured at ambient temperature
with a 10M
and 10pF load at 5V.
SYMBOL PARAMETER
MIN.
TYP.
MAX. UNIT
V
Output Voltage Hi
4.8
4.95
V
V
Output Voltage Lo
0.05
0.2
V
*t
r
Rise Time
0.16
1
sec.
*t
f
Fall Time
0.46
1
sec.
I
DD
Supply Current
45
60
A
Duty Cycle
40
50
60
%
* Models with faster rise and fall time available, contact factory.
PIN CONNECTIONS
Pin
Connection
1
NC
7
Ground
8
Output
14
V
DD
PACKAGING
LXO
-Tube Pack (Standard)
OUTPUT WAVE FORM
OH
OL
V
DD
V
OH
t
r
t
f
0
V
OL
90%*
10%*
HOW TO ORDER LXO CRYSTAL OSCILLATORS
LXO
S
32.768 kHz
(
A
/
I
)
"S" if special or
Frequency
*Calibration
Temp. Range:
custom design.
Tolerance
C = Commercial
Blank if Std.
@25
O
C
I = Industrial
(A)
M = Military
(B)
S = Specify
(C)
* Of
V
DD
80
60
40
20
3
100
10
CURRENT (
A
)
u
V
(VOLTS)
D D
4
5
6
7
2
*Other calibration fill in ppm
Frequencies other than 32.768 kHz
A:
0.01%
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B:
0.03%
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C:
0.1%
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