CX-2HC-SM232.768C [EUROQUARTZ]
CX MINIATURE CRYSTALS; CX微型晶体
| 型号： | CX-2HC-SM232.768C |
| 厂家： | 
EUROQUARTZ LIMITED |
| 描述： | CX MINIATURE CRYSTALS |
| 文件： | 总2页 (文件大小：120K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CX MINIATURE CRYSTALS
EUROQUARTZ
Telephone:
Fax:
+44(0)1460 230000
+44(0)1460 230001
sales@euroquartz.co.uk
www.euroquartz.co.uk
Page
CX-2H-SM
16kHz ttoo 660000kkHHzz
1 of 2
Email:
Web:
MMIINNIIAATTUURREE SSMMDD CCRRYYSSTTAALL
FFOORR SSEERRIIEESS OOSSCCIILLLLAATTOORRSS
Miniature tuning-fork design
High shock resistance
Designed for low-power applications
Compatible with hybrid or PC board packaging
Low ageing
Full military environmental testing available
Ideal for battery operated applications
General Description
The miniature CX-2H-SM quartz crystal is a high quality tuning-
fork resonator for use in series (two cascaded inverters) oscillators.
The CX-2H-SM is hermetically sealed in a rugged, leadless
ceramic package. The crystal has been designed for surface-
mounting on printed circuit boards or hybrid circuits. The CX-2H-
SM crystal is manufactured using a photo-lithographic process,
yielding consistently high quality production parts.
Specification
Frequency Range:
Calibration Tolerance*:
Motional Resistance (R ):
16kHz to 600kHz
A, B or C (see table)
Figure 1
1
(TOP)
2
A
I
H
Max.: 16 ~ 169.9kHz, 2x typ.
170~600kHz, 2.5x typ.
Figure 2
G
3
F
Motional Capacitance (C ):
Quality Factor (Q):
D
B
C
Figure 3
Min. is 0.25x typ.
2.0pF max.
E
Terminal 1 is electrically connected to terminal 3
Shunt Capacitance (C ):
Drive Level:
Outline
16~24.98kHz 1.5µW max.
25~600kHz 3.0µW max.
Figure 4
CX-2-SM Package Dimensions
Turning Point (T )**:
Temperature Coefficient:
Ageing, first year:
Shock, survival***:
Vibration, survival***:
Operating Temperature:
-0.035ppm/°C
±5ppm max.
Typical
(mm)
Maximum
(mm)
Dimension
1,500g 0.3ms, ½ sine
10g rms, 20-2,000Hz random
-10°~+70°C (commercial)
-40°~+85°C (industrial)
-55°~+125°C (military)
-55°C~+125°C
A
B
C
D
E
6.60
2.39
-
6.99
2.74
see below
1.14
Storage Temperature:
Process Temperature:
0.89
1.50
1.27
2.67
3.94
5.33
260°C for 20 seconds
1.75
Specifications are typical at 25°C unless otherwise indicated.
F
1.52
*
**
***
Tighter frequency calibration available
Other turning point available
Higher shock and vibration version available
G
H
I
2.92
4.19
5.59
Dimension
“C”
Glass Lid
(mm max.)
Ceramic Lid
(mm max.)
CX-1H-SM Crystal Calibration Tolerance at 25°C
Frequency Range (kHz)
Calibration
SM1
SM2
SM3
1.65
1.70
1.78
1.91
1.96
2.03
16~74.9
250~600
75~169.9 170~249.9
A
B
±0.003% ±0.005%
±0.01%
±0.02%
±0.2%
±0.02%
±0.05%
±0.5%
±0.01%
±0.1%
±0.01%
±0.1%
C
Equivalent Circuit
L1
R1
Solder Pad Layout
C1
C0
1
2
2.67
1
2
2.87
R1 Motional Resistance L1
Motional Inductance
C0
Shunt Capacitance
0.6
C1
Motional Capacitance
CX MINIATURE CRYSTALS
EUROQUARTZ
Telephone:
Fax:
+44(0)1460 230000
+44(0)1460 230001
sales@euroquartz.co.uk
www.euroquartz.co.uk
Page
CX-2H-SM
16kHz ttoo 660000kkHHzz
2 of 2
Email:
Web:
MMIINNIIAATTUURREE SSMMDD CCRRYYSSTTAALL
FFOORR SSEERRIIEESS OOSSCCIILLLLAATTOORRSS
Figure 2 - CX-2H Typical Motional Capacitance (C )
Circuit Design
Conventional Series Oscillator Circuit
Figure 3 - CX-2H Typical Quality Factor (Q)
Oscillator
Buffer
CX-1H Crystal
Figure 1 - CX-2H Typical Motional Resistance (R )
Figure 4 - CX-2H Typical Turning Point Temp. (°C)
Terminations
Termination
Designation
Packaging
CX-2H-SM - Bulk Pack (Standard)
- 16mm tape, 178mm or 330mm reels (Optional)
per EIA 481
SM1
SM2
SM3
Gold Plated
Nickel, Solder Plated
- Tray Pack (Optional)
Nickel, Solder Plated and Solder Dipped
Order Code
C = Ceramic Lid
Blank = Glass Lid
Frequency
CX-2H
( A /
I )
-SM1 32.768kHz
“S” if special
or custom design
Blank if standard
Temperature
Range:
C = Commercial
I = Industrial
M = Military
S = Specify
SM1
SM2
SM3
Calibration
Tolerance*
@ 25°C
A, B, C
*For other calibration tolerances
enter figure in ppm
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