EUROQUARTZ CX-3V-SM Cx miniature crystal Datasheet

CX MINIATURE CRYSTALS
CX-3V-SM
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: [email protected]
Web: www.euroquartz.co.uk
Page
18kHz to 600kHz
MINIATURE
SMD CRYSTAL
1 of 2
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General Description
The miniature CX-3V-SM crystals are leadless devices designed for
surface-mounting on printed circuit boards or hybrid substrates.
These crystals are intended for use in Pierce oscillators.
Hermetically sealed in a rugged, miniature ceramic package the
crystals are produced using a photo-lithographic process giving
repeatability and consistency.
A
D
D
B
C
Motional Capacitance (C1):
Quality Factor (Q):
E
Outline
Shunt Capacitance (C0):
Drive Level:
CX-3V-SM Package Dimensions
Dimension
Typical
(mm)
6.73
B
2.62
2.90
C
-
see below
D
1.27
1.52
E
1.32
1.57
Dimension
ā€œCā€
Glass Lid
(mm max.)
Turning Point (T0)**:
Temperature Coefficient:
Ageing, first year:
Shock***:
Vibration, survival:
Operating Temperature:
Maximum
(mm)
A
7.11
Storage Temperature:
Max. Process Temperature:
1.47
1.75
SM2
1.52
1.80
SM3
1.60
1.88
18kHz to 600kHz
Tuning Fork (Flexure)
A, B, or C (see below)
See Figure 1
Max: 18-25kHz, 2 x typ.
25-600kHz, 2.5 x typ.
See Figure 2
See Figure 3
min. is 0.25 x typ.
1.8pF max.
18-25kHz 0.5µW max.
25-600kHz 1.0µW max.
See Figure 4
-0.035ppm/°C
±5ppm max.
1,500g peak, 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
Specifications are typical at 25°C unless otherwise indicated.
Ceramic Lid
(mm max.)
SM1
Specification
Frequency Range:
Functional Mode:
Calibration Tolerance*:
Motional Resistance (R1):
D
(TOP)
Miniature tuning fork design
High shock resistance
Designed for low power applications
Compatible with hybrid or PCB mounting
Low ageing
Full military environmental testing available
Ideal for battery operated applications
*
**
***
Closer frequency calibration available
Other turning point available
A higher shock and vibration version is available.
CX-3V Crystal Calibration Tolerance at 25°C
Equivalent Circuit
1
L1
Calibration
C1
R1
C0
L 1 Motional Inductance
C 1 Motional Capacitance C0 Shunt Capacitance
R 1 Motional Resistance
2
Frequency Range (kHz)
18~74.9
75~169.9
170~249.9
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%
CX MINIATURE CRYSTALS
CX-3V-SM
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: [email protected]
Web: www.euroquartz.co.uk
Page
18kHz to 600kHz
MINIATURE
SMD CRYSTAL
2 of 2
Figure 3 - CX-3V Typical Quality Factor (Q)
300
Circuit Design
200
100
Conventional HCMOS Pierce Oscillator Circuit
in '000s
50
Rf
Amplifier
Buffer
20
18
RA
CS
C1
Osc.
Freq. (Fo)
100
200
500
(kHz)
Figure 4 - CX-3V Typical Turning Point Temp. (°C)
C2
CX-2
50
Frequency
+80
Figure 1 - CX-3V Typical Motional Resistance (R1)
+70
+60
300
+50
200
+40
100
To(°C) +30
+20
50
R1
(k
W)
+ 10
20
0
10
- 10
-20
10
5
20
50
100 200
600
Frequency (kHz)
2
18
50
100 200
600
Frequency (kHz)
Figure 2 - CX-3V Typical Motional Capacitance (C1)
Solder Pad Layout
5
1.78
C1
2
3.05
(fF)
1.0
5.46
Terminations
0.5
18
50
100
200
600
Frequency (kHz)
Packaging
Order Code
CX-3V
O.T.=3rd O.T. Mode
Blank = Fundamental
ā€œSā€ if special
C = Ceramic Lid
or custom designBlank = Glass Lid
Blank if standard
Termination
Designation
CX-1-SM - Bulk Pack (Standard)
- 16mm tape, 178mm or 330mm reels (Optional)
per EIA 481
- Tray Pack (Optional)
SM1
Gold Plated
SM2
Nickel, Silver Plated
SM3
Nickel, Solder Plated and Solder Dipped
Frequency
-SM1 32.768kHz ( A
SM1
SM2
SM3
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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