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RSG Electronic Components
RSG Electronic Components

CX1SM Datasheet Preview

CX1SM Datasheet

530 kHz to 2.1 MHz Low Profile Miniature Surface Mount Quartz Crystal

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CX1SM pdf
CX1SM CRYSTAL
530 kHz to 2.1 MHz
Low Profile, Miniature Surface Mount Quartz Crystal
DESCRIPTION
The CX1SM quartz crystals are leadless devices designed
for surface mounting on printed circuit boards or hybrid
substrates. They are hermetically sealed in a rugged,
miniature ceramic package. The CX1SM crystal is
manufactured using the STATEK-developed photo-
lithographic process, and was designed utilizing the
experience acquired by producing millions of crystals for
industrial, commercial, military and medical applications.
Maximum process temperature should not exceed 260OC.
FEATURES
Extensional mode
Ideal for use with microprocessors
Designed for low power applications
Compatible with hybrid or PC board packaging
Low aging
Full military testing available
Ideal for battery operated applications
Designed and manufactured in the USA
Glass Lid Shown
PACKAGE DIMENSIONS
A TOP
B
D
E
D
C
actual size
side view
BOTTOM
E
EQUIVALENT CIRCUIT
C0
1 L1 C1 R1
R1 Motional Resistance L1 Motional Inductance
C1 Motional Capacitance C0 Shunt Capacitance
SUGGESTED LAND PATTERN
0.070 (1.78)
www.DataSheet4U.com
0.160 (4.06)
TYP.
DIM
inches
mm
A
0.315
8.00
2
B
0.140
3.56
C --
D
0.045
1.14
E
0.060
1.52
DIM “C”
MAX
SM1
SM2
SM3
GLASS LID
inches
mm
0.065
1.65
0.067
1.70
0.070
1.78
MAX.
inches
mm
0.330 8.38
0.155 3.94
see below
0.055 1.40
0.070 1.78
CERAMIC LID
inches
mm
0.070 1.78
0.072 1.83
0.075 1.90
inches (mm)
0.270 (6.86)
RSG Electronic Components GmbH - Sprendlinger Landstr. 115 - 63069 Offenbach - Germany - www.rsg-electronic.de
10129 - Rev B
YSTEM CERTIFICA T
01



RSG Electronic Components
RSG Electronic Components

CX1SM Datasheet Preview

CX1SM Datasheet

530 kHz to 2.1 MHz Low Profile Miniature Surface Mount Quartz Crystal

No Preview Available !

CX1SM pdf
SPECIFICATIONS
TYPICAL APPLICATION
FOR A PIERCE OSCILLATOR
Specifications are typical at 25OC unless otherwise noted.
Specifications are subject to change without notice.
Parameters
Fundamental
Overtone
Frequency Range, (Hz)
555 k 614 k 1.0 M 1.4 M1.8432 M 2.1M
Motional Resistance,R1() 600 275 500 775 300 475
Motional Resistance,R1 MAX
3 k
Motional Capacitance,C1 (fF) 2.5 3.6 2.0 1.5 2.8 2.6
Quality Factor, Q (k)
170 260 190 100 110 70
Shunt Capacitance,C0 (pF) 1.2 1.3 1.1 1.0 1.3
Calibration Tolerance*
+_ 500 ppm (0.05%)
1.3
+_ 1000 ppm (0.1%)
Drive Level
+_ 10000 ppm (1.0%)
3 µW MAX
Load Capacitance**
7 pF
Turning Point (T0)**
35OC
Temperature Coefficient (k) -0.035 ppm/OC2
Note: Frequency f at temperature T is related to frequency f0
at turning point temperature T0 by:
f-f0
f0
=
k(T-T0)2
Function Mode
Extensional
Aging, first year
5 ppm MAX
Shock, survival
Vibration, survival
750 g peak, 0.3 ms, 1/2 sine
10 g RMS, 20-1,000 Hz random
Operating Temp. Range
-10OC to +70OC (Commercial)
-40OC to +85OC (Industrial)
-55OC to +125OC (Military)
Storage Temp. Range
-55OC to +125OC
Max Process Temperature 260OC for 20 sec.
*Tighter tolerances available.
** Other values available.
TERMINATIONS
Designation
SM1
SM2
SM3
Termination
Gold Plated
Solder Plated
Solder Dipped
PACKAGING OPTIONS
The low profile CX miniature surface mount 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 (f0) is 15 to 250 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.
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
=
CD
CD
x
+
CG +
CG
CS
(1)
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.
The oscillation frequency (f0) is approximately equal to:
[ ]f0 = fS
1+ C1
2(C0 + CL)
(2)
Where
fS = Series resonant frequency of the crystal
C1 = Motional Capacitance
C0 = Shunt Capacitance
CONVENTIONAL CMOS
PIERCE OSCILLATOR CIRCUIT
Rf
CX1SM - Tray Pack
BUFFER
- Tape and Reel
(Reference tape and reel data sheet 10109)
wHwwO.DWataTShOeet4OUR.coDmER CX1SM CRYSTALS
AMPLIFIER
RA
OSC
Freq (fO)
CX1 S
C SM1
1.0M, 500 / M
Blank = Glass Lid
C = Ceramic Lid
“S” if special or
custom design.
Blank if Std.
SM1 = Gold Plated
SM2 = Solder Plated
SM3 = Solder Dipped
Frequency
K = kHz
M = MHz
Calibration
Tolerance
@ 25OC
Operating Temp. Range:
C = -10OC to +70OC
I = -40OC to +85OC
M = -55OC to +125OC
S = Customer Specified
CG
CX1
XTAL
(in ppm)
CD
RSG Electronic Components GmbH - Sprendlinger Landstr. 115 - 63069 Offenbach - Germany - www.rsg-electronic.de
10129 - Rev B
YSTEM CERTIFICA T
01


Part Number CX1SM
Description 530 kHz to 2.1 MHz Low Profile Miniature Surface Mount Quartz Crystal
Maker RSG Electronic Components
Total Page 2 Pages
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