HIGH TEMPERATURE OSCILLATORS
32.768 kHz
High Stability/Fast Start-up/High Shock
DESCRIPTION
T
KH
OM
CX
For
high temperature,
high stability and fast start-up
applications, Statek offers the AT crystal-based 32.768 kHz
CXOMKHT and CXOXHT oscillators. These oscillators are
designed to operate at temperatures up to 200
O
C. A high-
shock version is also offered that features 30,000 g shock
survival. Other features include fast start-up time (0.8 ms
typical) and low current operation (500 µA at 25
O
C.)
FEATURES
HT
OX
CX
PACKAGE DIMENSIONS
CXOMKHT
High temperature operation up to 200
O
C
Overall 5 times improvement in total frequency stability
when compared to a typical tuning fork design
A High-Shock version that features 30,000 g shock
survival
Excellent frequency stability over temperature range
Fast start-up
CMOS and TTL compatible
Optional output enable/disable
Low current
Hermetically sealed ceramic package
Full military testing available
APPLICATIONS
CXOXHT
CXOXHT
CXOMKHT
MAXIMUM
inches
0.263
0.204
0.060
0.065
0.065
0.070
mm
6.68
5.18
1.52
1.65
1.65
1.78
Industrial
Downhole instrumentation
Rotary shaft sensors
Underground boring tools
DIM
A
B
C
(SM1)
C
(SM3/SM5)
SUGGESTED LAND PATTERN
CXOMKHT
MAXIMUM
inches
0.136
0.107
0.053
0.058
0.041
0.031
mm
3.40
2.70
1.36
1.48
1.10
0.85
D
E
CXOXHT
PIN CONNECTIONS
1. Enable/Disable (E) or No Connection (N)
2. Ground
3. Output
4.
V
DD
10201 Rev C
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256
www.statek.com
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Specifications are typical at 25
O
C unless otherwise noted.
Specifications are subject to change without notice. Tighter
specifications available. Please contact factory.
Supply Voltage
Calibration Tolerance
Frequency Stability
over Temperature
Total Tolerance
1
Supply Current (Typical)
Output Load (CMOS)
Start-up Time
Rise/Fall Time
Duty Cycle
Aging, first year
Aging, 1,000 Hrs
Shock, survival
3.3 V ± 10%
+
_
+
_
+
_
+
_
+
_
Supply Voltage V
DD
-0.3 V to 5.0 V
Storage Temperature
-55
O
C to 125
O
C
Maximum Process Temperature 260
O
C, 20 seconds
ENABLE/DISABLE OPTIONS (E/N)
100 ppm, or tighter as required
100 ppm for 25
O
C to 150
O
C
150 ppm for 25
O
C to 175
O
C
175 ppm for 25
O
C to 200
O
C
200 ppm for 25
O
C to 200
O
C
500 µA
15 pF
0.8 ms typical
85 ns/ 45 ns
40% MIN, 60% MAX
10 ppm MAX at 25
O
C
100 ppm MAX at 200
O
C
CXOXHT
Std: 5,000 g, 0.3 ms,
1
/
2
sine
CXOMKHT
Std: 3,000 g, 0.3 ms,
1
/
2
sine
HG: 10,000 g, 0.3 ms,
1
/
2
sine
HG: 30,000 g, 0.5 ms,
1
/
2
sine
For the 32.768 kHz CXOXHT and CXOMKHT, 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 describes the
Enable/Disable option E.
ENABLE/DISABLE OPTION E
FUNCTION TABLE
Enable (Pin 1 High*)
Output
Oscillator
Current
Frequency output
Oscillates
Disable (Pin 1 Low)
High Z State
Stops
500 µA at 25
O
C
3.2 µA at 25
O
C
*
When PIN 1 is allowed to float, it is held by an internal pull-up resistor.
PACKAGING OPTIONS
CXOMK
CXOX
Vibration, survival
2
20 g, 10-2,000 Hz swept sine
CXOXHT, CXOMKHT - Tray Pack
- 16 mm tape, 7” or 13” reels
Per EIA 481 (see Tape and Reel data sheet # 10109)
Operating Temp Range
3
-55
O
C up to 200
O
C
1. Includes calibration tolerance. Other tolerances available.
2. Per MIL-STD-202G, Method 204D, Condition D. Random vibration testing available.
Note: All parameters are measured at ambient temperature with a 10 MΩ, 15 pF load.
3. Expected life at 200ºC is in excess of 1,500 hours.
HOW TO ORDER 32.768 kHz CXOMKHT and CXOXHT OSCILLATORS
CXOMKHT
CXOMKHT
CXOXHT
Supply Voltage
4 = 3.3 V
4
S
“S” if special or
custom design.
Blank if Std.
E
Enable/Disable
Option E or N
SM5
Termination Blank =
SM1 Gold Plated
(Lead Free)
SM5 = Solder
Dipped (Lead Free)
32.768K,
Frequency
K = kHz
Calibration
Tolerance
@ 25
0
C
(in ppm)
/
/ 200
Total Frequency
Tolerance (in
ppm)
1
/
H
Temp. Range:
H = 25
0
C to 200
0
C
S = Customer
Specified Temp.
Range
HG = High Shock
otherwise leave
blank.
Frequency
Stability over
Temp. Range
(in ppm)
OR
50
Calibration
Tolerance
@ 25
0
C
(in ppm)
/
175
/
Total
Frequency
Tolerance
(in ppm)
/
H
Temp. Range:
H = 25
0
C to
200
0
C
S = Customer
Specified Temp.
Range
Frequency
Stability over
Temp. Range
(in ppm)
10201 Rev C
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256
www.statek.com
Microcontroller MCU
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