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VEMW44GT33-204.8-2.0/-30+75

更新时间： 2024-11-06 04:50:11
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EUROQUARTZ /
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HCMOS Output Clock Oscillator, 204.8MHz Nom, ROHS COMPLIANT, MINIATURE, CERAMIC, SMD, 4 PIN

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VEMW44GT33-204.8-2.0/-30+75 数据手册

  
QUARTZ  
EURO  
TCXO  
EMW44GT Series  
HCMOS 4 pad SMD, 'W' Group  
Miniature 11.4 x 9.6 x 4.7mm SMD package  
Frequency range: 200.01MHz to 800.0MHz  
Supply voltage 3.3 Volts  
Frequency stability from ±1ppm over -30 to +75°C  
RoHS compliant  
EMW44GT - OUTLINES AND DIMENSIONS  
DESCRIPTION  
EMW44GT series TCXOs are packaged in a 4 pad SMD package with  
trimmer. With squarewave (CMOS) output, tolerances are available  
from ±1.0ppm over -30° to +75°C. The part has a 0.01mF decoupling  
capacitor built in.  
SPECIFICATION  
Product Series Code  
TCXO:  
EMW44GT  
VCTCXO:  
VEMW44GT  
Frequency Range:  
Output Waveform:  
Initial Calibration Tolerance:  
Standard Frequencies:  
200.01MHz to 800.0MHz  
Squarewave, HCMOS  
<±2.0ppm at +25°±2°C  
200.0, 204.8, 311.04, 400.0,  
409.6 and 622.08MHz  
(Partial list)  
Mechanical Frequency Tuning:  
Operating Temperature Range:  
Frequency Stability  
±3ppm minimum  
(see table)  
(see table)  
vs. Ageing:  
vs. Voltage Change:  
vs. Load Change:  
±1.0 ppm max. first year  
±0.3 ppm max. ±5% change  
±0.3 ppm max. ±10% change  
±1.0ppm max. for one reflow  
(Measured after 24 hours)  
+3.3 Volts  
vs. Reflow (SMD type):  
Supply Voltage:  
Output Logic Levels:  
Logic High: 90% Vdd min.  
Logic Low: 10% Vdd max.  
65mA max. (Freq. dependant)  
1.2ns typical  
Current Consumption:  
Rise and Fall Times:  
Duty Cycle:  
VEMW44GT VOLTAGE CONTROL SPECIFICATION  
Control Voltage:  
Standard = +1.5±1.0Volts for all input  
voltages. (Contact technical sales if  
+2.5±2.0 Volts is required.)  
50%±5%  
Start-up Time:  
Current Consumption:  
Output Load:  
5ms typical, 10ms max.  
See table below  
15pF  
Frequency Deviation: ±6.0 ppm min. (Vcon = +4.5V±1.0V)  
Slope Polarity:  
Positive (increase of control voltage increases  
output frequency.)  
Storage Temperature:  
-55~+125°C  
Input Impedance:  
2M minimum  
Modulation Bandwidth: 25kHz minimum  
Linearity: ±10% maximum  
SSB PHASE NOISE at 25°C  
Offset  
10Hz  
100Hz  
1kHz  
10kHz  
100kHz  
FREQUENCY STABILITY  
Part =  
EMW44GT33  
at 622.080MHz  
(dBc/Hz)  
-50  
-77  
-102  
-115  
-108  
Stability (ppm)  
±0.5  
±1.0  
±1.5  
±2.0  
±2.5  
±3.0  
0 ~ +50  
P
ASK  
X
P
P
P
P
X
P
P
P
P
X
P
P
P
P
P
P
P
P
P
-10 ~ +60  
-20 ~ +70  
-30 ~ +75  
-40 ~ +85  
Temp.  
Range (°C)  
P
P
P
PART NUMBERING SCHEDULE  
X
P
X
ASK  
ASK  
Example:  
EMW44GT33-409.60-2.5/-30+75  
Series Description  
TCXO = EMW44GT*  
P = available, x = not available, ASK = call Technical Sales  
VCTCXO = VEMW44GT  
Supply Voltage  
33 = 3.3 VDC  
Frequency (MHz)  
Stability over OTR (±ppm)  
Operating Temperature Range (OTR) (°C)  
Lower and upper limits  
*Note: 'G' indicates part is RoHS compliant  
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE  
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk  
1

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