CX-1-03 CRYSTAL
8 MHz to 160 MHz
Miniature AT
-Cut Quartz Crystal
™
Fundamental Mode: 8 MHz - 70 MHz
Third Overtone Mode: 48 MHz - 160 MHz
DESCRIPTION
The CX-1 quartz crystal is a high quality miniature AT cut
quality resonator. The CX-1 is hermetically sealed in a
rugged, miniature ceramic package, one-fourth the size of an
eight-pin mini-DIP. The CX-1 crystal is manufactured using
the STATEK-developed photolithographic process, and was
designed utilizing the experience acquired by producing
millions of crystals for industrial, commercial, military and
medical applications.
actual size
side view
FEATURES
PACKAGE DIMENSIONS
Low-profile hermetically-sealed package
Excellent aging characteristics
Fundamental or 3rd overtone mode
High shock resistance
Full military testing available
Designed and manufactured in the USA
B
A
E
F
D
PACKAGE HANDLING
C
TYP.
MAX.
mm
8.00
3.56
1.78
7.62
0.51
3.81
INCHES
.330
.155
.080
.310
.040
.160
mm
8.38
3.94
2.03
7.87
1.02
4.06
The CX crystal is hermetically sealed in a ceramic package.
Normal handling and soldering precautions for small, low
thermal mass parts are adequate when installing or testing
CX crystals. CX crystals may be wave soldered, with proper
precaution taken to avoid desoldering the leads. A slow
machine rate or too high a pre-heat temperature or solder
bath temperature can damage the crystals.
Lead to
package solder interface temperature should not
exceed 175
o
C, glass lid to package seal rim
temperature should not exceed 210
o
C.
If the seal rim
reaches temperatures above the maximum specified, the
package may lose its hermeticity resulting in degradation of
crystal performance. Mishandling of CX crystals can cause
cracking of the glass lid and loss of hermeticity.
DIM
A
B
C
D
E
F
INCHES
.315
.140
.070
.300
.020
.150
Leads 0.013” x 0.018” (0.33 x 0.46 mm) typical.
EQUIVALENT CIRCUIT
C
0
1
L
1
C
1
R
1
2
R
1
Motional Resistance L
1
Motional Inductance
C
1
Motional Capacitance C
0
Shunt Capacitance
10127 - Rev D
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
SPECIFICATIONS
CIRCUIT DESIGN
Specifications are typical at 25oC unless otherwise noted.
Specifications are subject to change without notice.
10 MHz 32MHz 155.52 MHz
Motional Resistance R
1
( ) 50
Motional Capacitance C
1
(fF) 5.5
Quality Factor Q (k)
Calibration Tolerance*
80
A
B
Load Capacitance
Drive Level
Frequency-Temperature
Stability**
+
_
+
_
20
7.8
36
2.6
_
0.01% (
+
100ppm)
50
0.5
41
3.2
A conventional CMOS Pierce Oscillator is shown below.
The crystal oscillates at a frequency f
O
above the crystal’s
series-resonant frequency fs. The crystal is effectively
inductive and, in combination with R
A
, Cd and Cg in the
feedback loop, provides approximately 180
O
phase shift
necessary to obtain oscillation. Typical component values
for a Pierce Oscillator using a 16 MHz crystal with a
74HC04 hex inverter are shown below:
Typical Application as Pierce Oscillator
Using 74HC04 CMOS Hex Inverter at 5 VDC
Shunt Capacitance Co (pF) 2.2
0.1%
_
C
+
1.0%
20 pF
(Unless specified by customer)
500 W MAX.
-10
O
C to +70
O
C from
-40
O
C to +85
O
C from
-55
O
C to +125
O
C from
5ppm MAX.
3,000g, .3 msec., 1/2 sine
20g rms, 10-2,000 Hz random
-10
O
C to +70
O
C Commercial
-40
O
C to +85
O
C Industrial
-55
O
C to +125
O
C Military
-55
O
C to +125
O
C
+
_
+
_
+
_
CONVENTIONAL CMOS
PIERCE OSCILLATOR CIRCUIT
10ppm
20ppm
30ppm
R
f
BUFFER
OSC
Freq (f
O
)
Contact factory for
design guidelines
Aging, first year
Shock, survival***
Vibration, survival
Operating Temperature
Range
Storage Temperature
AMPLIFIER
C
S
R
A
C
G
CX-1
C
D
Note: The characteristics of the frequency temperature stability follow that of AT
cut thickness-shear mode*
_
* Tighter tolerances available as low as
+
5 ppm
** Does not include calibration tolerance
*** Higher shock version available, refer to data sheet model CX-1HG (10108)
STANDARD FREQUENCIES
PACKAGING
CX-1-03 - Tray Pack (Standard)
10.0
11.0592
12.0
14.318
16.0
MHz
MHz
MHz
MHz
MHz
19.6608
20.0
24.0
24.576
30.0
MHz
MHz
MHz
MHz
MHz
32.0
MHz
35.2512 MHz
36.0
MHz
40.0
MHz
HOW TO ORDER CX-1-03 CRYSTALS
CX-1
“S” if special or
custom design.
Blank if Std.
O.T.=3
RD
O.T. Mode C=Ceramic Lid
Blank=Fundamental Blank=Glass Lid
Mode
-03
32 MHz
Frequency
(
25ppm
Calibration
Tolerance*
@25
O
C
(A)
(B)
(C)
/
25ppm
/
50ppm
/
I
)
Frequency
Total Frequency Temp. Range:
Stability over Tolerance
C = Commercial
Temp. Range
I = Industrial
M = Military
S = Specify
*Other calibration fill in ppm.
10127 - Rev D
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
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