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参数资料
| 型号： | JCLGLJ-24.704MHZ |
| 厂商： | VECTRON INTERNATIONAL |
| 元件分类： | VCXO, clock |
| 英文描述： | VCXO, CLOCK, 24.704 MHz, CMOS OUTPUT |
| 文件页数： | 3/4页 |
| 文件大小： | 205K |
| 代理商： | JCLGLJ-24.704MHZ |
J-Type Voltage Controlled Crystal Oscillator
www.vectron.com
USA: Vectron International 166 Glover Avenue, Norwalk, CT 06856 Tel: 1-88-VECTRON-1 Fax: 1-888-FAX-VECTRON
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Vectron International reserves the right to make changes to the product(s) and/or information contained herein without notice.
No liability is assumed as a result of their use or application.
No rights under any patent accompany the sale of any such product(s) or information.
3
As the oscillator ages, relaxation of the crystal mounting stress
or transfer of environmental stress through the package to the
crystal mounting arrangement can lead to frequency variations.
VTI has minimized these two effects through the use of a
miniature AT-Cut strip resonator crystal which allows a
superior mounting arrangement and results in minimal
relaxation and almost negligible environmental stress transfer.
Mass-loading on the crystal generally results in a frequency
decrease and is typically due to out-gassing of material within a
hermetic package or from contamination by external material in
a less than hermetic package. VTI has minimized the impact
of mass loading by ensuring hermetic integrity and minimizing
out-gassing by limiting the number of internal components
through the use of ASIC technology.
Under normal operating conditions with an operating
temperature of 40°C, the J-Type will typically exhibit 2 ppm
aging in the first year of operation. The device will then
typically exhibit 1 ppm aging the following year with a
logarithmic decline each year thereafter.
Handling Precautions
Although protection circuitry has been designed into this
device, proper precautions should be taken to avoid exposure
to electrostatic discharge (ESD) during handling and mounting.
VTI employs a human-body model (HBM) and a charged-
device model (CDM) for ESD-susceptibility testing and
protection design evaluation.
ESD voltage thresholds are dependent on the circuit
parameters used to define the mode. Although no industry-
wide standard has been adopted for the CDM, a standard HBM
(resistance = 1500
, capacitance = 100pF) is widely used and
therefore can be used for comparison purposes. The HBM
ESD threshold presented here was obtained by using these
circuit parameters.
Table 3. ESD Threshold Voltage
Model
Threshold
Unit
Human-Body (HBM)
1500*
Volts Min.
Charged-Device (CDM)
1500
Volts Min.
*Mil-STD-883D, Method 3015, Class 1
Table 4. Environmental Compliance
Parameter
Conditions
Shock and Vibration
MIL-STD-883C, 2002.3 A, 2007.1 A
Mechanical Vibration
MIL-STD-883C, 2007.1 A
Lead Solderability
MIL-STD-883C, 2003.5
Fine and Gross Leak
MIL-STD-883C, 1014.7
Storage Temp.
-55°C to 125°C
220
45-60s.
60-90s.
60s.
150
183
Time(s)
Figure 3. Suggested Reflow Profile
Figure 4. Suggested Pad Layout
Tape and Reel Information
K
I
H
G
F
E
D
C
B
A
M
L
J
Figure 5. Tape and Reel Information
Table 5. Tape and Reel Dimensions (Dimensions are in mm)
A
B
C
D
E
F
G
H
I
J
K
L
M
24.0
11.51
1.5
3.99
11.99
4.8
1.78
20.6
13.0
63
5.0
25
330
Dimensions are in
inches and (millimeters)
0.118
(3.00)
0.200
(5.08)
0.100
(2.54)
0.346
(8.80)
0.050
(1.27)
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