RSG CX4VSCSM2

CX4VSM CRYSTAL
30 kHz to 200 kHz
Ultra-Miniature Low Profile
Surface Mount Quartz Crystal
™
DESCRIPTION
STATEK’s ultra-miniature CX4VSM quartz crystals are
hermetically sealed in surface mount ceramic packages and
custom laser-tuned to frequencies ranging from 30 kHz to
200 kHz. This high quality tuning fork resonator is intended
for use in Pierce (single inverter) oscillators with a maximum
process temperature not to exceed 260OC.
actual size
side view
Glass Lid Shown
PACKAGE DIMENSIONS
D
FEATURES
Ultra-miniature, surface mount design
Available with glass or ceramic lid
Hermetically sealed ceramic package
TOP
A
BOTTOM
F
Quartz crystal tuning fork design
High shock and vibration survival
Excellent aging characteristics
Designed for low power applications
B
E
D
C
Full military testing available
Designed and manufactured in the USA
TYP.
MAX.
DIM
inches
mm
inches
mm
A
0.197
5.00
0.210
5.33
B
0.072
1.83
0.085
2.16
Smart Card
C
-
-
D
0.036
0.91
0.046
1.16
Transponder / Animal Migration
E
0.020
0.51
-
-
Space Limited Devices
F
0.025
0.64
-
-
APPLICATIONS
Medical Implantable and Non-Implantable Devices
Military Devices
Handheld Battery Operated Devices
DIM “C”
Down Hole / Industrial Instrumentation
Computer / Computer Peripherals
GLASS LID
see below
CERAMIC LID
MAX
inches
mm
inches
mm
SM1
0.045
1.14
0.050
1.27
SM2
0.046
1.17
0.051
1.30
SM3
0.048
1.22
0.053
1.35
SUGGESTED LAND PATTERN
0.059 (1.5)
EQUIVALENT CIRCUIT
C0
0.092 (2.3)
1
L1
C1
R1
0.160 (4.0)
inches (mm)
10103 - Rev C
IS O
RSG Electronic Components GmbH - Sprendlinger Landstr. 115 - 63069 Offenbach - Germany - www.rsg-electronic.de
YS
90
01
ERT
T E M C IFIC T
A
N
IO
S
R1 Motional Resistance L1 Motional Inductance
C1 Motional Capacitance C0 Shunt Capacitance
2
TYPICAL APPLICATION
FOR A PIERCE OSCILLATOR
SPECIFICATIONS
Specifications are typical at 25OC unless otherwise noted.
Specifications are subject to change without notice.
Parameters
Fundamental
Overtone
32.768
100
200
Motional Resistance R1(kΩ)
Frequency, (kHz)
50
18
2.4
Motional Capacitance C1 (fF)
2.3
1.07
2.2
Quality Factor Q (k)
40
85
140
Shunt Capacitance C0 (pF)
1.1
0.7
1.2
9
8
5
25
10
29
Load Capacitance (pF)*
o
Turning Point ( C)*
Standard Calibration Tolerance**
Glass Lid:
+
_
30 ppm
(0.003%)
+
_
Ceramic Lid:
+
_
+
_
100 ppm
(0.01%)
100 ppm
(0.01%)
+
_
1000 ppm
(0.1%)
1000 ppm
(0.1%)
+
_
10000 ppm
(1.0%)
0.5 µW MAX
Drive Level
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
2
= k(T-T0)
f0
Aging, first year
5 ppm
Shock, survival
5,000 g peak, 0.3 ms, 1/2 sine
Vibration, survival
20 g RMS, 10-2,000 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.
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 CX4 crystal calibration tolerance is influenced by the
effective circuit capacitances, specified as the load
capacitance (CL). CL is approximately equal to:
CL =
TERMINATIONS
CD x CG
CD + CG
(1)
+ CS
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 +
Where f
S
C1
C0
* Other values available
** Tighter tolerances available
Designation
SM1
SM2
SM3
The CX4 family of surface mount crystals are ideal for
small, high density, battery operated portable products. The
CX4 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 PInetwork circuit with CD and CG provides the additional
phase shift necessary to sustain oscillation. The oscillation
frequency (f0) is 50 to 150 ppm above the crystal’s series
resonant frequency (fS).
C1
2(C0 + CL)
]
(2)
= Series resonant frequency of the crystal
= Motional Capacitance
= Shunt Capacitance
CONVENTIONAL CMOS
PIERCE OSCILLATOR CIRCUIT
Termination
Gold Plated
Solder Plated
Solder Dipped
Rf
BUFFER
PACKAGING OPTIONS
CX4VSM
- Tray Pack
AMPLIFIER
- 16mm tape, 7” or 13” reels
RA
OSC
Freq (fO )
(Reference tape and reel data sheet 10109)
HOW TO ORDER CX4VSM CRYSTALS
CX4V
S
C
SM1
C = Ceramic Lid
Blank = Glass Lid
Frequency
K = kHz
SM1 = Gold Plated
SM2 = Solder Plated
SM3 = Solder Dipped
Calibration
Tolerance
@25OC
(in ppm)
/
I
Operating Temp. Range:
C = -10OC to +70OC
I = -40OC to +85OC
M = -55OC to +125OC
S = Customer Specified
CG
CX4
XTAL
CD
10103 - Rev C
IS O
RSG Electronic Components GmbH - Sprendlinger Landstr. 115 - 63069 Offenbach - Germany - www.rsg-electronic.de
YS
90
01
ERT
T E M C IFIC T
A
N
IO
S
“S” if special or
custom design.
Blank if standard
32.768K , 100