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STATEK
STATEK

LFXO Datasheet

Miniature Surface Mount Crystal Oscillator


LFXO Datasheet Preview


LFXO OSCILLATOR
32.768 kHz
Fast Start-up/High Precision
Miniature Surface Mount Crystal Oscillator
DESCRIPTION
Statek’s 32.768 kHz, surface mount LFXO oscillators,
designed especially for applications requiring fast start-up
and high precision, consist of a Statek miniature AT quartz
crystal and a CMOS/TTL compatible hybrid circuit in a
ceramic package. Each crystal is pre-qualified before
assembly into the oscillator through electrical tests and
characterization over temperature.
For harsh environment applications, Statek provides a high
shock version of the LFXO crystal oscillator.
FEATURES
High precision (±10 ppm)
Fast start-up (0.8ms typ.)
High shock resistance
Tight frequency-temperature stability
Low acceleration sensitivity (HG version)
CMOS output
Optional Output Enable/Disable with Tri-State
Low EMI emission
Full military testing per MIL-PRF-55310
Low jitter
APPLICATIONS
Military & Aerospace
Smart Munitions
Cockpit Systems
Navigation
Industrial, Computer & Communications
Industrial Controls
Instrumentation
Down-hole Drilling
DIMENSIONS
A TOP
BC
TYPICAL
DIM
inches
mm
A
0.256
6.50
B
0.197
5.00
C (SM1)
0.063
C (SM3/SM5) 0.067
1.60
1.70
D
0.055
1.40
E
0.060
1.52
23
BOTTOM
14
D
D
E
MAXIMUM
inches
mm
0.263 6.68
0.204 5.18
0.065
0.073
1.65
1.85
0.065 1.65
0.070 1.78
SUGGESTED LAND PATTERN
PIN CONNECTIONS
1. Not connected (N) or Enable (E)
2. Ground
3. Output
4. VDD
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
10191 Rev A
YSTEM CERTIFICAT
01
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Page 1

SPECIFICATIONS
Specifications are typical at 25OC unless otherwise noted.
Specifications are subject to change without notice. Tighter
specifications available (contact factory).
ABSOLUTE MAXIMUM RATINGS
Supply Voltage VDD
Storage Temperature
-0.3 V to 5.0 V
-55OC to 125OC
Maximum Process Temperature
260OC for 20 sec.
Supply Voltage1
Calibration Tolerance2
Frequency Stability
Over Temperature3
Output Load (CMOS)
Aging, first year
Shock4
Vibration5
Operating Temp. Range
3.3 V ±10% (2.5 V also available)
±10 ppm and up
±10 to ±50 ppm for Commercial
±20 to ±100 ppm for Industrial
±30 to ±100 ppm for Military
15 pF
3 ppm MAX
Std: 5,000 g, 0.3 ms, ½ sine
HG: 20,000 g, 0.3 ms, ½ sine
20 g, 10-2,000 Hz swept sine
-10OC to 70OC (Commercial)
-40OC to 85OC (Industrial)
-55OC to 125OC (Military)
ELECTRICAL CHARACTERISTICS6
SYMBOL PARAMETER
MIN TYP
VOH
VOL
tstartup
tr
tf
IDD
Output Voltage High 0.9VDD
Output Voltage Low
Start-up Time
0.8
Rise Time (10%-90%)
85
Fall Time (10%-90%)
45
Duty Cycle
45 50
Supply Current
500
MAX UNIT
V
0.1VDD V
ms
1000 ns
1000 ns
55 %
µA
ENABLE/DISABLE OPTIONS (E/N)
For the 32.768 kHz fast start-up LFXO, Statek offers two
enable/disable options: E and N. The E-version has a Tri-State
output and stops oscillating internally when the output is put into
the high Z state. The N-version does not have PIN 1 connected
internally and so has no enable/disable capability. The following
table summarizes the Enable/Disable option E.
ENABLE/DISABLE OPTION E
SUMMARY
Enable (Pin 1 High*)
Disable (Pin 1 Low)
Output Frequency Output
High Z State
Oscillator Oscillates
Current 500 µA
Stops
3.2 µA
* When PIN 1 is allowed to float, it is held high by an internal pull-up resistor.
PACKAGING OPTIONS
LFXO
- Tray Pack
- 16 mm tape, 7˝ or 13˝ reels
Per EIA 481 (see Tape and Reel datasheet #10109)
1. Other supply voltages available. Contact factory for ordering information.
2. Other tolerances available.
3. Does not include calibration tolerance. Tighter tolerances available.
4. Higher shock available. Contact factory.
5. Per MIL-STD-202G, Method 204D, Condition D. Random vibration testing also available.
6. Measurements done at VDD = 3.3V
Note: All parameters are measured at ambient temperature with a 10 M!, 15 pF load.
HOW TO ORDER 32.768 kHz LFXO OSCILLATORS/ FAST START-UP
LFXO AT
HG 4
S
E
SM3
32.768K , 30 / 30 /
AT = For Fast
Start-up/ High
Precision
HG = High Shock 2 = 2.5V “S” if special or
otherwise leave 4 = 3.3V custom design.
blank.
Blank if Std.
Enable/Disable
Option
E or N
Termination
Blank = SM1
= Gold Plated
(Pb Free)
SM3 = Solder Dipped
SM5 = Solder Dipped
(Pb Free)
Frequency
K = kHz
Calibration
Tolerance
@ 250C
(in ppm)
Frequency
Stability over
Temp.Range
(in ppm)
OR
/ / 50 / I
/I
Temperature Range
C =10OC to +70OC
I = -40OC to +85OC
M = -55OC to +125OC
S = Customer Specified
Total
Frequency
Tolerance
(in ppm)
Temperature Range
C = -10OC to +70OC
I = -40OC to +85OC
M = -55OC to +125OC
S = Customer Specified
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
10191 Rev A
Page 2
Part Number LFXO
Manufactur STATEK
Description Miniature Surface Mount Crystal Oscillator
Total Page 2 Pages
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