STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
10141 - Rev C
DESCRIPTION
The LQXO-4 oscillator design consists of a CMOS-
compatible hybrid circuit, packaged in a standard TO-39
metal package. Permanent, precision tuning of the
oscillator 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 LQXO-4 vary with frequency. The
characteristics of the 32.768 kHz model are presented in
this data sheet.
FEATURES
Very low power consumption
Low aging
CMOS compatible
Double hermetically sealed package
Full military testing available
3 Volt operation available
APPLICATIONS
Industrial, Computer & Communications
General purpose clock oscillator
Tone generators
Data loggers
Telephone equipment
Ultrasonic detectors
Airborne hybrid computer
Flight recorder
LQXO-4 OSCILLATOR
32 kHz to 200 kHz*
Low Power Crystal Oscillator
TM
B
E
C
D
A
F
G
3
2
1
BOTTOM VIEW
DIM
INCHES
mm
A
0. 380 MAX.
9.65 MAX.
B
0. 185 MAX.
4.70 MAX.
C
0. 500 Min.
12.70 Min.
D
0. 029
0.74
E
0. 326 MAX.
8.28 MAX
F
0. 200 Ref.
5.08 Ref.
G
45
O
45
O
Note:
1. All metal parts gold plated
2. Leads are 0.019 in.[0.48mm] MAX.
PACKAGE DIMENSIONS
TOP VIEW
*Consult factory for other
frequencies.
PIN CONNECTIONS
1.
V
DD
2. Output
3. Ground
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
10141 - Rev C
SPECIFICATIONS-LQXO-4 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
A:
0.01% (100ppm)
Tolerance*
B:
0.03%
C :
0.1%
Frequency Stability**
0
O
C to +50
O
C -0.0025% Typ. 25 ppm
-0.004% MAX. 40 ppm
-20
O
C to +70
O
C -0.007% Typ. 70 ppm
-0.01% MAX 100 ppm
Voltage Coefficient
1 ppm/V Typ.
3 ppm/V MAX.
Aging, first year
1 ppm/year Typ.
3 ppm/year MAX.
Shock
1,000g, 1 msec.,1/2 sine 3 ppm MAX.
Vibration
10g rms10-2000 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.
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
ABSOLUTE MAXIMUM RATINGS
Supply Voltage V
DD
-0.3V to 7.0V
Storage Temperature
-55
O
C to +125
O
C
Maximum Process Temp. 260
O
C, 10 seconds
ELECTRICAL CHARACTERISTICS
LQXO-4 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 (10%-90%)
12
25
nsec.
*t
f
Fall Time (10%-90%)
12
25
nsec.
SYM
Duty Cycle
40
50
60
%
Supply Current
V =5V
7
15
A
V =3V
5
10
A
* Models with faster rise and fall time available, consult factory.
PACKAGING
LQXO-4 - Tray Pack (Standard)
OUTPUT WAVE FORM
V
DD
V
OH
t
r
t
f
0
V
OL
90%*
10%*
TYPICAL CURRENT CONSUMPTION
LQXO-4-32.768 kHz
HOW TO ORDER LQXO-4 CRYSTAL OSCILLATORS
LQXO-4
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)
I
DD
2
3
4
5
6
6
8
V
DD
(Volts)
CURRENT (uA)
10
12
7
4
* Of VDD
*Other calibration fill in ppm
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