EUROQUARTZ CX-2VS-SM232.768A Cx miniature crystal Datasheet

CX MINIATURE CRYSTALS
CX-2V-SM
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: [email protected]
Web: www.euroquartz.co.uk
Page
16kHz to 600kHz
MINIATURE SMD CRYSTAL
FOR PIERCE OSCILLATORS
1 of 2
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General Description
The miniature CX-2V-SM quartz crystal is a high quality tuningfork resonator for use in Pierce (single inverter) oscillators. The CX2V-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 crystal is
manufactured using a photo-lithographic process, yielding
consistently high quality production parts.
A
2
I
G
Motional Capacitance (C1):
Quality Factor (Q):
Shunt Capacitance (C0):
Drive Level:
Outline
CX-2-SM Package Dimensions
Typical
(mm)
6.60
B
2.39
2.74
C
-
see below
D
0.89
1.14
E
1.50
1.75
F
1.27
1.52
G
2.67
2.92
H
3.94
4.19
I
5.33
5.59
Dimension
ā€œCā€
Glass Lid
(mm max.)
Turning Point (T0)**:
Temperature Coefficient:
Ageing, first year:
Shock, survival***:
Vibration, survival***:
Operating Temperature:
Maximum
(mm)
A
6.99
Storage Temperature:
Process Temperature:
Specifications are typical at 25°C unless otherwise indicated.
*
**
***
Ceramic Lid
(mm max.)
SM1
1.65
1.91
SM2
1.70
1.96
SM3
1.78
2.03
L1
C1
Tighter frequency calibration available
Other turning point available
Higher shock and vibration version available
CX-1V-SM Crystal Calibration Tolerance at 25°C
Calibration
Equivalent Circuit
1
16kHz to 600kHz
A, B or C (see table)
Figure 1
Max.: 16 ~ 169.9kHz, 2x typ.
170~600kHz, 2.5x typ.
Figure 2
Figure 3
Min. is 0.25x typ.
2.0pF max.
16~24.98kHz 0.5µW max.
25~600kHz 1.0µW max.
Figure 4
-0.035ppm/°C2
±5ppm max.
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
260°C for 20 seconds
H
3 F
D
B
C
E
Terminal 1 is electrically connected to terminal 3
Dimension
Specification
Frequency Range:
Calibration Tolerance*:
Motional Resistance (R1):
1
(TOP)
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
R1
Frequency Range (kHz)
16~74.9
75~169.9
250~600
A
±0.003%
±0.005%
±0.01%
±0.02%
B
±0.01%
±0.01%
±0.02%
±0.05%
C
±0.1%
±0.1%
±0.2%
±0.5%
Solder Pad Layout
2
2.67
C0
2.87
R 1 Motional Resistance
170~249.9
L 1 Motional Inductance
C 1 Motional Capacitance C0 Shunt Capacitance
1
2
0.6
CX MINIATURE CRYSTALS
CX-2V-SM
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: [email protected]
Web: www.euroquartz.co.uk
Page
16kHz to 600kHz
MINIATURE SMD CRYSTAL
FOR PIERCE OSCILLATORS
2 of 2
Figure 2 - CX-2V Typical Motional Capacitance (C1)
5
Circuit Design
C1
Conventional HCMOS Pierce Oscillator Circuit
Rf
Amplifier
1.0
0.5
16
Buffer
50
100 200
600
Frequency (kHz)
Osc.
Freq. (Fo)
RA
CS
2
(fF)
Figure 3 - CX-2V Typical Quality Factor (Q)
300
200
C1
CX-2
C2
100
in '000s
50
Figure 1 - CX-2V Typical Motional Resistance (R1)
300
20
200
16
100
50
100
Frequency
200
600
(kHz)
50
R1
(k
W)
Figure 4 - CX-2V Typical Turning Point Temp. (°C)
20
10
+80
5
+70
+60
2
50
16
100 200
+50
600
+40
Frequency (kHz)
To(°C) +30
+20
+ 10
0
- 10
-20
18
50
100 200
600
Frequency (kHz)
Terminations
Packaging
Designation
CX-2V-SM - Bulk Pack (Standard)
- 16mm tape, 178mm or 330mm reels (Optional)
per EIA 481
- Tray Pack (Optional)
Termination
SM1
Gold Plated
SM2
Nickel, Solder Plated
SM3
Nickel, Solder Plated and Solder Dipped
Order Code
CX-2V
C = Ceramic Lid
Blank = Glass Lid
ā€œSā€ if special
or custom design
Blank if standard
Frequency
-SM1 32.768kHz
SM1
SM2
SM3
( A
Calibration
Tolerance*
@ 25°C
A, B, C
*For other calibration
tolerances enter
figure in ppm
/
I
)
Temperature
Range:
C = Commercial
I = Industrial
M = Military
S = Specify
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