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CX-1-03 Datasheet(PDF) 2 Page - RSG Electronic Components GmbH

Part No. CX-1-03
Description  530 kHz to 2.1 MHz Miniature Quartz Crystal
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Maker  RSG [RSG Electronic Components GmbH]
Homepage  http://www.rsg-electronic.de
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10130 - Rev B
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
0.05% ( 500ppm)
B
0.1%
C
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)**
35
oC
Temperature Coefficient (k) -0.035 ppm/
oC2
Note: Frequency (f) deviation from frequency (fO) @ turning
point temperature (TO);
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
-10
oC to +70oC
Commercial
-40
oC to +85oC
Industrial
-55
oC to +125oC Military
Storage Temperature
-55
oC to +125oC
Max Process Temperature
See package handling
* Tighter frequency calibration available.
** Other turning point available.
+
_
+
_
+
_
+
_
HOW TO ORDER CX-1-03 LEADED CRYSTALS
CX-1
-03
1.0 MHz
( A
/ I )
“S” if special
Blank=Glass Lid
Side
Calibration
Temp. Range:
or custom
C=Ceramic Lid
Leads
Tolerance*
C = Commercial
design. Blank
@ 25
0C
I
= Industrial
if Std.
(A)
M = Military
(B)
S = Specify
(C)
*Other calibration fill in ppm.
PACKAGING
CX-1V-03 -Tray Pack (Standard)
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.
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:
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 (fO) is approximately equal to:
CL =
CD x CG
+
CS
CD + CG
f-fO
=
k(T-TO)
2
(1)
fO = fS
[1+
C1
]
2(C0 + CL)
(2)
Where f
S
= Series resonant frequency of the crystal
C1 = Motional Capacitance
C0 = Shunt Capacitance
fO
Frequency
AMPLIFIER
BUFFER
C
G
C
D
R
A
CX-1
Contact factory for
design guidelines
OSC
Freq (f )
O
R
f
C
S
CONVENTIONAL CMOS
PIERCE OSCILLATOR CIRCUIT
RSG Electronic Components GmbH, Sprendlinger Landstr. 115, 63069 Offenbach, Germany, Tel. +49 69 - 984047-0, Fax: +49 69 - 9840-77, www.rsg-electronic.de




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