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参数资料
| 型号： | 12.800MHZEQAX-20-08-50-46 |
| 厂商： | EUROQUARTZ LTD |
| 元件分类： | XO, clock |
| 英文描述： | TCVCXO, CLOCK, 12.8 MHz, HCMOS OUTPUT |
| 封装： | SMD, 4 PIN |
| 文件页数： | 1/1页 |
| 文件大小： | 93K |
| 代理商： | 12.800MHZEQAX-20-08-50-46 |
QUARTZ
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 1460 230000 Fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk
STRATUM III OSCILLATORS
Compact, SMD package
Frequency range from 10Mhz to 20MHz
Operating temperature range, -20° to +70°C
Operable temperature -30° to +75°C
Supply Voltage 3.3 Volts
EQAX-20
OUTLINES AND DIMENSIONS
TCXO with STRATUM III
Long-term stability option
DESCRIPTION
The Euroquartz EQAX-20 TCXO conforms to IEC60679-1, Stratum 3,
providing a low-noise, highly-stable and reliable source of clock signals.
FEATURES
SPECIFICATION
Frequency Range:
9Mhz to 33Mhz
Standard Frequencies:
10, 12.8, 16.384, 19.44MHz
Frequency Stability
Initial Tolerance:
±1ppm @25°C
Vs. Temperature:
±2.5ppm -40°~+85°C
±1.5ppm -20°~+70°C
-0.8ppm 0°~+50°C
Vs. Supply Voltage Var:
±0.2ppm
Vs. Load Change:
±0.2ppm
Long Term Ageing (1st Year):
±1ppm (@40°C)
Long Term Stab. (15 Years):
±4.6ppm
Frequency Adjustment Range
Electronic Frequency Control
±5ppm
EFC Voltage Vc:
0.25~+4.5V (Option II = ‘50’
0.30~+3.0V (Option II = ‘33)
EFC Slope:
Positive
EFC Input Impedance:
10k Ohms
Absolute Pull Range:
RF Output
Signal Waveform:
HCMOS
Load:
15pF
Symmetry (Duty Cycle):
60%/40%
Start-up Time:
4 ms
Supply Voltage:
+5.0V±5%/+3.3V±5%
Current Consumption:
25mA maximum (@25°C)
Operable Temperature Range:
-40°~+85°C
Storage Temperature Range:
-40°~+85°C
Enclosure:
As drawing
1
VC
Voltage Control
2
GND
Ground
4`
RF OUT
RF Output
5
Vs
Supply Voltage
Pad
No.
Symbol
Function
PAD CONNECTIONS
Visual inspection,
Dimensions
Sealing tests
Solderability,
Resistance to
soldering heat
Shock
Bump
Free fall
Vibration,
Sinsoidal
Rapid change of
Temperature
Dry heat
Damp heat, cyclic
Cold
Climatic sequence
Damp heat, steady
state
Endurance tests,
- ageing
- extended ageing
2-17
2-20
2-27
2-29
2-32
2-6
2-14
2-2
2-30
2-1
1-7
2-3
4.5
4.6
4.8.2
4.8.3
4.8.8
4.8.6
4.8.9
4.8.7
4.8.5
4.8.11
4.8.12
4.8.13
4.8.14
4.8.15
4.9.1
4.9.2
Enclosure styles as in
IEC 60122-3, if applic.
Gross Leak: Test Qc
Fine Leak: Test Qk
Test Ta (235±5°C),
method 1 Test Tb,
method 1A, 5s
Test Ea, 3x per axis
100g, 6ms 1/2sine
Test Eb, 4000 bumps/
axis, 40g, 6ms
Test Ed, procedure 1,
2 drops from 1m ht.
Test Fc, 30 min/axis,
10Hz-55Hz, 0.75mm;
55Hz -2kHz, 10g
Test Na, 10 cycles at
extremes of operating
temperature range.
Test Ba, 16 h at upper
temperature.
Test Db variant 1
severity b, 55°C/95%rh
Test Aa, 2h at lower
temperature indicated
by climatic category.
Sequence of 4.8.11,
4.8.12 and 4.8.13
Test Ca, 56 days
30 days @ 85°C
1kh, 2kh, 8kh, @85°C
Test
IEC 60068
Part . .
IEC 61178-1
Clause . .
ENVIRONMENTAL
Test Conditions
ORDERING CODE
To order, specify as follows:
FREQUENCY-MODEL-OPTION I-OPTION II-OPTION III
EXAMPLE:
12.800MHz EQAX-20-25-50-46
OPTION I - Tolerance vs Temperature
25 = ±2.5ppm -40°~+85°C
15 = ±1.5ppm -20°~+70°C
08 = 0.8ppm 0°~+50°C
OPTION II - EFC Voltage
50 = 0.25V~4.75V
33 = 0.30V~3.0V
OPTION III - Long Term Stability
46 = ±4.6ppm overall, 15 years
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