EUROQUARTZ CX-1O-0332 Cx miniature crystal Datasheet

CX MINIATURE CRYSTALS
CX-1-03
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
QUARTZ CRYSTAL
1 of 2
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General Description
The CX-1 quartz crystal is a high quality miniature AT-cut
resonator. The CX-1 is hermetically sealed in a rugged, miniature
ceramic package, a quarter of the size of an eight pin dual-in-line
package. The crystal is manufactured utilizing a photo-lithographic
process, ensuring consistency and repeatability of electrical
characteristics.
Low-profile hermetically sealed package
Excellent ageing characteristics
Fundamental or 3rd Overtone mode
High shock resistance
Full military environmental testing available
Specification
0.7
7.6
3.8
2.0
8.1
3.8
Outline and Dimensions
Equivalent Circuit
L1
1
C1
R1
C0
L 1 Motional Inductance
C 1 Motional Capacitance C0 Shunt Capacitance
R 1 Motional Resistance
Standard Frequencies (MHz)
10.0
19.6608
32.0
11.0592
20.0
35.2512
12.0
24.0
36.0
14.318
24.576
40.0
16.0
30.0
8MHz to 160MHz
A ±0.01% (±100ppm)
B ±0.1%
C ±1.0%
20pF (unless other required)
Load Capacitance:
See table
Motional Resistance (R1):
See table
Motional Capacitance (C1):
See table
Quality Factor (Q):
See table
Shunt Capacitance (C0):
500mW max.
Drive Level:
-10° to +70°C (Commercial)
Temperature Stability**:
-40° to +85°C (Industrial)
-55° to +125°C (Military)
±5ppm max.
Ageing, first year:
3000g 0.3ms, ½ sine
Shock, survival***:
20g rms 10-2,000Hz random
Vibration, survival:
-10°~+70°C (commercial)
Operating Temperature:
-40°~+85°C (industrial)
-55°~+125°C (military)
-55°C~+125°C
Storage Temperature:
Lead to Package temp. not to
Process Temperature:
exceed 175°C
Glass lid to package seal rim
temp. not to exceed 210°C
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
Frequency Range:
Calibration Tolerance*:
2
CX-1 Motional Parameters, Q and C0
Frequency
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-1-03
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
QUARTZ CRYSTAL
2 of 2
Circuit Design
Typical HCMOS Pierce Oscillator
A conventional HCMOS Pierce oscillator is shown below. The
crystal oscillates at a frequency f above the crystal’s seriesresonant frequency. The crystal is effectively inductive and in
combination with R , C and C in the feedback loop, provides
approximately 180° of the phase shift necessary to ensure
oscillation.
O
F
1
2
Conventional HCMOS Pierce Oscillator Circuit
Rf
Amplifier
CS
C1
Buffer
Osc.
Freq. (Fo)
RA
CX-1
C2
Packaging
CX-1-03 -Bulk Pack (Standard)
Tray Pack (Optional)
Order Code
CX-1
O.T.=3rd O.T. Mode
Blank = Fundamental
Total
Frequency
Tolerance
Frequency
-03
Side leads
“S” if special
C = Ceramic Lid
or custom designBlank = Glass Lid
Blank if standard
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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