CX6CSM2-1.0M,500/M [STATEK]
Parallel - Fundamental Quartz Crystal, 1MHz Nom, HERMETIC SEALED, MINIATURE, CERAMIC PACKAGE-2;型号: | CX6CSM2-1.0M,500/M |
厂家: | STATEK CORPORATION |
描述: | Parallel - Fundamental Quartz Crystal, 1MHz Nom, HERMETIC SEALED, MINIATURE, CERAMIC PACKAGE-2 驱动 晶体 谐振器 |
文件: | 总2页 (文件大小:115K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
CX6SM CRYSTAL
800 kHz to 1.35 MHz
Ultra-Low Profile (1mm)
Miniature Surface Mount Quartz Crystal
DESCRIPTION
actual size
side view
The CX6SM 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. They are manufactured using the
STATEK-developed photolithographic process, and are
designed utilizing the experience acquired by producing
millions of crystals for industrial, commercial, military and
medical applications. Maximum process temperature should
not exceed 260OC.
Glass Lid Shown
PACKAGE DIMENSIONS
D
FEATURES
Ultra-low profile (1mm)
TOP
BOTTOM
A
Extensional mode
Ideal for use with microprocessors
Designed for low power applications
Low aging
D
Full military testing available
Ideal for battery operated applications
Designed and manufactured in the USA
C
B
TYP.
MAX.
EQUIVALENT CIRCUIT
DIM
inches
0.265
0.103
-
mm
inches
0.280
0.114
mm
7.11
2.90
C0
A
B
C
D
6.73
2.62
-
see below
1
L1
C1
R1
2
0.050
1.27
0.060
1.52
DIM “C“
MAX
GLASS LID
CERAMIC LID
R1 Motional Resistance L1 Motional Inductance
C1 Motional Capacitance C0 Shunt Capacitance
inches
0.039
0.041
0.044
mm
inches
0.053
0.055
0.058
mm
SM1
0.99
1.04
1.12
1.35
1.40
1.47
SM2/SM4
SM3/SM5
SUGGESTED LAND PATTERN
0.070 (1.78)
0.120 (3.05)
0.215 (5.46)
inches (mm)
10133 - Rev C
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
TYPICAL APPLICATION
FOR A PIERCE OSCILLATOR
SPECIFICATIONS
Specifications are typical at 25OC unless otherwise noted.
Specifications are subject to change without notice.
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 150 ppm above the crystal’s series
resonant frequency (fS).
Frequency Range
Functional Mode
800 kHz - 1.35 MHz
Extensional
+_ 500 ppm (0.05%)
+_ 1000 ppm (0.1%)
+_ 10000 ppm (1.0%)
7 pF (Unless specified by customer)
Calibration Tolerance1
Load Capacitance
Motional Resistance (R1)
5 kΩ MAX
Drive Level
Motional Capacitance (C1) 1.2fF
R is used to limit the crystal’s drive level by forming a
A
Quality Factor (Q)
Shunt Capacitance (C0)
Drive Level
150 k
1.0 pF
W MAX
35OC
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.
3
µ
Turning Point (T )2
0
Temperature Coefficient (k) -0.035 ppm/OC2
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:
Aging, first year
Shock, survival
Vibration, survival
Operating Temp. Range
5 ppm MAX
1,000 g, 0.3 ms,1/2 sine
10 g RMS, 20-1,000 Hz random
-10OC to +70OC (Commercial)
CD x CG
=
+
(1)
CL
CS
-40OC to +85OC (Industrial)
CD + CG
-55OC to +125OC (Military)
-55OC to +125OC
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.
Storage Temp. Range
Max Process Temperature 260OC for 20 sec.
Note: Frequency f at temperature T is related to frequency f0
at turning point temperature T0 by:
2
f-f0
f0
=
k(T-T )
0
1. Tighter tolerances available.
2. Other values available.
The oscillation frequency (f0) is approximately equal to:
PACKAGING
C1
=
+
(2)
f0 fS
1
[
]
2(C0 + CL)
CX6SM - Tray Pack
- Tape and Reel
(Reference tape and reel data sheet 10109)
Where
= Series resonant frequency of the crystal
= Motional Capacitance
= Shunt Capacitance
fS
C1
C0
TERMINATIONS
Designation
SM1
Termination
Gold Plated
CONVENTIONAL CMOS
PIERCE OSCILLATOR CIRCUIT
SM2
SM3
Solder Plated
Solder Dipped
Rf
SM4
SM5
Solder Plated (Lead Free)
Solder Dipped (Lead Free)
BUFFER
HOW TO ORDER CX6SM CRYSTALS
OSC
Freq (fO)
CX6
S
C
SM1
1.0M
,
500
/
I
RA
AMPLIFIER
CX6
Calibration
Tolerance
@ 25OC
Operating Temp. Range:
Frequency
K = kHz
M=MHz
C
= -10OC to +70OC
Blank = Glass Lid
C = Ceramic Lid
I = -40OC to +85OC
M = -55OC to +125OC
(in ppm)
S
= Customer Specified
SM1 = Gold Plated
CG
SM2 = Solder Plated
SM3 = Solder Dipped
SM4 = Solder Plated (Lead Free)
SM5 = Solder Dipped (Lead Free)
CD
“S” if special or
custom design.
Blank if Srd.
10133 - Rev C
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
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