Datenblatt

HIGH TEMPERATURE OSCILLATORS
32.768 kHz
High Stability/Fast Start-up/High Shock
T
KH
OM
X
C
DESCRIPTION
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 200OC. A highshock 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 25OC.)
HT
OX
X
C
PACKAGE DIMENSIONS
FEATURES
CXOMKHT
High temperature operation up to 200OC
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
CXOXHT
CMOS and TTL compatible
Optional output enable/disable
Low current
Hermetically sealed ceramic package
Full military testing available
APPLICATIONS
CXOXHT
Industrial
CXOMKHT
MAXIMUM
MAXIMUM
Downhole instrumentation
DIM
inches
mm
inches
mm
Rotary shaft sensors
A
0.136
3.40
0.263
6.68
Underground boring tools
B
0.107
2.70
0.204
5.18
C (SM1)
0.053
1.36
0.060
1.52
C (SM3/SM5)
0.058
1.48
0.065
1.65
D
0.041
1.10
0.065
1.65
E
0.031
0.85
0.070
1.78
SUGGESTED LAND PATTERN
CXOMKHT
CXOXHT
PIN CONNECTIONS
1. Enable/Disable (E) or No Connection (N)
2. Ground
3. Output
4. VDD
10201 Rev C
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
O
Specifications are typical at 25 C unless otherwise noted.
Specifications are subject to change without notice. Tighter
specifications available. Please contact factory.
Supply Voltage
Supply Voltage VDD
-0.3 V to 5.0 V
Storage Temperature
-55OC to 125OC
Maximum Process Temperature 260OC, 20 seconds
3.3 V ± 10%
Calibration Tolerance
+
_
100 ppm, or tighter as required
Frequency Stability
over Temperature
+
_
100 ppm for 25OC to 150OC
150 ppm for 25OC to 175OC
+
_
+
_
ENABLE/DISABLE OPTIONS (E/N)
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.
175 ppm for 25OC to 200OC
+
_
Total Tolerance1
Supply Current (Typical)
200 ppm for 25OC to 200OC
500 µA
Output Load (CMOS)
15 pF
Start-up Time
0.8 ms typical
Rise/Fall Time
85 ns/ 45 ns
Duty Cycle
40% MIN, 60% MAX
Aging, first year
10 ppm MAX at 25OC
Aging, 1,000 Hrs
100 ppm MAX at 200OC
Output
Shock, survival
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
Oscillator
CXOMK
CXOX
2
ENABLE/DISABLE OPTION E
FUNCTION TABLE
Disable (Pin 1 Low)
Frequency output
High Z State
Oscillates
Stops
O
3.2 µA at 25OC
500 µA at 25 C
Current
* When PIN 1 is allowed to float, it is held by an internal pull-up resistor.
PACKAGING OPTIONS
CXOXHT, CXOMKHT - Tray Pack
- 16 mm tape, 7” or 13” reels
20 g, 10-2,000 Hz swept sine
Vibration, survival
Enable (Pin 1 High*)
3
Operating Temp Range -55OC up to 200OC
Per EIA 481 (see Tape and Reel data sheet # 10109)
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
4
CXOMKHT
CXOXHT
S
E
“S” if special or
custom design.
Blank if Std.
Supply Voltage
4 = 3.3 V
Enable/Disable
Option E or N
HG = High Shock
otherwise leave
blank.
SM5
Termination Blank =
SM1 Gold Plated
(Lead Free)
SM5 = Solder
Dipped (Lead Free)
32.768K,
/
Frequency
K = kHz
/ 200
/
Total Frequency
Tolerance (in
ppm)1
Calibration
Tolerance
@ 250C
(in ppm)
H
Temp. Range:
H = 250C to 2000C
S = Customer
Specified Temp.
Range
Frequency
Stability over
Temp. Range
(in ppm)
OR
50
Calibration
Tolerance
@ 250C
(in ppm)
/
175
Frequency
Stability over
Temp. Range
(in ppm)
/
/
Total
Frequency
Tolerance
(in ppm)
H
Temp. Range:
H = 250C to
2000C
S = Customer
Specified Temp.
Range
10201 Rev C
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
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