RSG CX-1S-03

CX-1-03 CRYSTAL
530 kHz to 2.1 MHz
Miniature Quartz Crystal
™
DESCRIPTION
The CX-1 quartz crystal is a high quality extensional mode
quartz 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.
FEATURES
actual size
side view
PACKAGE DIMENSIONS
Extensional mode
F
E
Ideal for use with microprocessors
Designed for low power applications
Compatible with hybrid or PC board packaging
D
A
Low aging
Full military testing available
Ideal for battery operated applications
Designed and manufactured in the USA
B
PACKAGE HANDLING
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 175oC,
glass lid to package seal rim temperature should not
exceed 210oC. If the seal rim reaches temperatures above the
maximum specified, the package may lose its hermeticity. Loss
of hermeticity results in a frequency decrease and motional
resistance increase.
C
TYP.
MAX.
DIM
INCHES
mm
INCHES
mm
A
.315
8.00
.330
8.38
B
.140
3.56
.155
3.94
C
.070
1.78
.080
2.03
D
.300
7.62
.310
7.87
E
.020
0.51
.040
1.02
F
.150
3.81
.160
4.06
Leads 0.013” x 0.018” (0.33 x 0.46 mm) typical.
EQUIVALENT CIRCUIT
C0
1
L1
C1
R1
2
R1 Motional Resistance L1 Motional Inductance
C1 Motional Capacitance C0 Shunt Capacitance
10130 - Rev B
RSG Electronic Components GmbH, Sprendlinger Landstr. 115, 63069 Offenbach, Germany, Tel. +49 69 - 984047-0, Fax: +49 69 - 9840-77, www.rsg-electronic.de
SPECIFICATIONS
Specifications are typical at 25oC unless otherwise noted.
Specifications are subject to change without notice.
Frequency Range
530 kHz - 2.1 MHz
Functional Mode
Extensional
Calibration Tolerance*
A
B
C
+
_
0.05% ( +_ 500ppm)
0.1%
+
_ 1.0%
+
_
Load Capacitance
7 pF
Motional Resistance (R1)
3 k⍀ MAX
Motional Capacitance (C1)
1.2fF
Quality Factor (Q)
150 k
Shunt Capacitance (C0)
1.0 pF
Drive Level
3 ␮W MAX.
Turning Point (TO)**
35oC
TYPICAL APPLICATION
FOR A PIERCE OSCILLATOR
The low profile CX miniature leaded crystal is ideal for small,
high density, battery operated portable products. The CX
crystal designed in a Pierce oscillator (single inverter) circuit
provides very low current consumption and high stability. A
conventional CMOS Pierce oscillator circuit is shown below.
The crystal is effectively inductive and in a PI-network circuit
with CD and CG provides the additional phase shift
necessary to sustain oscillation. The oscillation frequency
(fO) is 15 to 150 ppm above the crystal’s series resonant
frequency (fs).
Drive Level
RA is used to limit the crystal’s drive level by forming a
voltage divider between RA and CD. RA also stabilizes the
oscillator against changes in the amplifiers output
resistance (R0). RA should be increased for higher voltage
operation.
Temperature Coefficient (k) -0.035 ppm/oC2
Note: Frequency (f) deviation from frequency (fO) @ turning
point temperature (TO);
f-fO = k(T-T )2
O
fO
Aging, first year
5ppm MAX.
Shock
750g peak, 0.3 msec., 1/2 sine
Vibration, survival
10g rms, 20-1,000 Hz random
Operating Temperature
-10oC to +70oC Commercial
-40oC to +85oC Industrial
-55oC to +125oC Military
Storage Temperature
-55oC to +125oC
Max Process Temperature
See package handling
Load Capacitance
The CX crystal calibration tolerance is influenced by the
effective circuit capacitances, specified as the load
capacitance (CL). CL is approximately equal to:
CL =
[
fO = fS 1 +
-03
Blank=Glass Lid
C=Ceramic Lid
*Other calibration fill in ppm.
Side
Leads
1.0 MHz
Calibration
Tolerance*
@ 250C
Frequency
(A)
(B)
(C)
(A
C
I
M
S
(1)
+ CS
The oscillation frequency (fO) is approximately equal to:
HOW TO ORDER CX-1-03 LEADED CRYSTALS
“S” if special
or custom
design. Blank
if Std.
CD + CG
NOTE: CD and CG include stray layout to ground and Cs
is the stray shunt capacitance between the crystal
terminal. In practice, the effective value of CL will be less
than that calculated from CD, CG and CS values because
of the effect of the amplifier output resistance. CS should
be minimized.
* Tighter frequency calibration available.
** Other turning point available.
CX-1
CD x CG
/ I )
Temp. Range:
= Commercial
= Industrial
= Military
= Specify
Where f
S
C1
C0
C1
2(C0 + CL)
]
(2)
= Series resonant frequency of the crystal
= Motional Capacitance
= Shunt Capacitance
CONVENTIONAL CMOS
PIERCE OSCILLATOR CIRCUIT
Rf
BUFFER
AMPLIFIER
CS
PACKAGING
CX-1V-03 -Tray Pack (Standard)
CG
CX-1
RA
OSC
Freq (fO)
Contact factory for
design guidelines
CD
10130 - Rev B
RSG Electronic Components GmbH, Sprendlinger Landstr. 115, 63069 Offenbach, Germany, Tel. +49 69 - 984047-0, Fax: +49 69 - 9840-77, www.rsg-electronic.de