EUROQUARTZ CX-1OTCSM332B Cx miniature crystal Datasheet

CX MINIATURE CRYSTALS
CX-1-SM
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: [email protected]
Web: www.euroquartz.co.uk
Page
8MHz to 160MHz
MINIATURE AT-CUT
SMD CRYSTAL
1 of 2
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General Description
The miniature CX-1-SM crystals in leadless ceramic packages have
been designed for surface-mounting on printed circuit boards or
hybrid circuits. It is a robust crystal that has gained widespread
acceptance in the industry.
Surface-mount - infrared, vapour phase,
wave solder or epoxy mount techniques
Low profile, hermetically sealed package
Available with glass or ceramic lid
High shock and vibration resistance
Custom designs available
Full military environmental testing available
Specification
Frequency Range:
Calibration Tolerance*:
D
(TO P)
A
Load Capacitance:
Motional Resistance (R1):
Motional Capacitance (C1):
Quality Factor (Q):
Shunt Capacitance (C0):
Drive Level:
Temperature Stability**:
E
D
B
C
E
Outline
CX-1-SM Package Dimensions
Dimension
Typical
Maximum
(mm)
(mm)
A
8.00
8.38
B
3.56
3.94
C
-
see below
D
1.14
1.40
E
1.52
1.78
Dimension
Glass Lid
Ceramic Lid
“C”
(mm max.)
(mm max.)
SM1
1.65
1.78
SM2
1.70
1.83
SM3
1.78
1.90
Ageing, first year:
Shock, survival***:
Vibration, survival:
Operating Temperature:
Storage Temperature:
Process Temperature:
Specifications are typical at 25°C unless otherwise indicated.
The characteristics of the frequency stability parameter follow that of
AT-cut, thickness-shear mode crystals.
*
Closer calibration available, as low as ±5ppm
**
Does not include calibration tolerance
**
A higher shock version is available, refer to data sheet for
the model CX-1HG
CX-1 Motional Parameters, Q and C0
Equivalent Circuit
Frequency
1
L1
C1
R1
C0
R 1 Motional Resistance
8MHz to 160MHz
A ±0.01% (±100ppm)
B ±0.1%
C ±1.0%
20pF (unless other required)
See table
See table
See table
See table
500mW max.
-10° to +70°C from ±10ppm
-40° to +85°C from ±20ppm
-55° to +125°C from ±30ppm
±5ppm max.
3000g 0.3ms, ½ sine
20g rms 10-2,000Hz random
-10°~+70°C (commercial)
-40°~+85°C (industrial)
-55°~+125°C (military)
-55°C~+125°C
260°C for 20 seconds
L 1 Motional Inductance
C 1 Motional Capacitance C0 Shunt Capacitance
2
Motional
Motional
Quality
Shunt
Resistance
Capacitance
Factor
Capacitance
C1 (fF)
‘000s
C0 (pF)
80
2.2
R1 (
10.0MHz
W)
50
5.5
32MHz
20
7.8
36
2.6
155MHz
50
0.5
41
3.2
CX MINIATURE CRYSTALS
CX-1-SM
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: [email protected]
Web: www.euroquartz.co.uk
Page
8MHz to 160MHz
MINIATURE AT-CUT
SMD CRYSTAL
2 of 2
Terminations
Circuit Design
Typical HCMOS Pierce Oscillator
Designation
A conventional HCMOS Pierce oscillator is shown below. The
crystal oscillates at a frequency fO above the crystal’s seriesresonant frequency. The crystal is effectively inductive and in
combination with RF, C1 and C2 in the feedback loop, provides
approximately 180° of the phase shift necessary to ensure
oscillation.
Termination
SM1
Gold Plated
SM2
Nickel, Silver Plated
SM3
Nickel, Solder Plated and Solder Dipped
Packaging
Conventional HCMOS Pierce Oscillator Circuit
Rf
Amplifier
CS
C1
CX-1-SM - Bulk Pack (Standard)
- 16mm tape, 178mm or 330mm reels (Optional)
per EIA 481
- Tray Pack (Optional)
Buffer
Osc.
Freq. (Fo)
RA
Suggested Solder Pad Layout
C2
CX-1
1.78
4.06
6.86
Order Code
CX-1
O.T.=3rd O.T. Mode
Blank = Fundamental
“S” if special
or custom design
Blank if standard
Total
Frequency
Tolerance
Frequency
SM1
SM1
SM2
SM3
C = Ceramic Lid
Blank = Glass Lid
32MHz
( A
Calibration
Tolerance*
@ 25°C
A, B, C
/ 25ppm / 50ppm / I
Frequency
Stability
over
Temperature
Range
*For other calibration tolerances
enter figure in ppm
)
Temperature
Range:
C = Commercial
I = Industrial
M = Military
S = Specify
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