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EM38GT

更新时间： 2024-09-17 06:56:47
品牌 Logo 应用领域
EUROQUARTZ /
页数 文件大小 规格书
1页 345K
描述
HCMOS, 14 pin DIL compatible, MHz Range

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EM38GT 数据手册

  
QUARTZ  
EURO  
EM38GT Series TCXO  
HCMOS, 14 pin DIL compatible, MHz Range  
Package pin compatible with 14 pin DIL  
Wide frequency range: 1.25MHz to 156.0MHz  
Supply voltage 2.8, 3.0, 3.3 or 5.0 Volts  
Frequency stability from ±1ppm over -30 to +75°C  
RoHS compliant  
EM38GT - OUTLINES AND DIMENSIONS  
DESCRIPTION  
EM38GT series TCXOs are packaged in a conventional through hole-  
mounted package compatible with 14 pin DIL. 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:  
EM38GT  
VCTCXO:  
VEM38GT  
Frequency Range:  
Output Waveform:  
Initial Calibration Tolerance:  
Standard Frequencies:  
1.25MHz to 156.0MHz  
Squarewave, HCMOS  
<±1.0ppm at +25°±2°C  
10.0, 12.8, 13.0, 14.4, 15.36,  
16.384, 19.2, 19.440, 19.68,  
25.0, 20.0, 27.0, 38.880,  
40.0, 77.760, 125.0, 155.520  
(Partial list)  
Operating Temperature Range:  
Frequency Stability  
vs. Ageing:  
See table  
±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)  
±3ppm minimum  
vs. Voltage Change:  
vs. Load Change:  
vs. Reflow (SMD type):  
Mechanical Frequency Tuning:  
Supply Voltage:  
+2.8, +3.0, +3.3 or +5.0V  
(See table)  
INPUT VOLTAGE & CURRENT CONSUMPTION  
Output Logic Levels:  
Logic High: 90% Vdd min.  
Logic Low: 10% Vdd max.  
10ns max.  
50%±10% standard,  
50%±5% option  
Input Voltage/  
Frequency  
+2.8V  
+3.0  
+3.3V  
+5.0 V  
Rise and Fall Times:  
Duty Cycle:  
8.192MHz  
10.0MHz  
2mA  
3mA  
2mA  
4mA  
5mA  
7mA  
Start-up Time:  
Current Consumption:  
Output Load:  
5ms typical, 10ms max.  
See table below  
15pF  
77.760MHz  
155.520MHz  
14mA  
26mA  
17mA  
35mA  
32mA  
50mA  
Storage Temperature:  
-55~+125°C  
SSB PHASE NOISE at 25°C  
FREQUENCY STABILITY  
Offset  
10Hz  
100Hz  
1kHz  
10kHz  
100kHz  
Frequency Stability (ppm)  
0 ~ +50  
±0.5  
±1.0  
±1.5  
±2.0  
P
±2.5  
P
at 10.0Mhz  
(dBc/Hz)  
-115  
-135  
-148  
-152  
-155  
Part =  
M38GT33  
ASK  
P
P
x
P
P
P
x
at 155.250Mhz  
(dBc/Hz)  
-72  
-110  
-125  
-132  
-125  
-10 ~ +60  
x
x
x
x
P
P
Temperature  
-20 ~ +70  
Range (°C)  
P
P
-30 ~ +75  
-40 ~ +85  
x
P
PP  
P
x
x
x
PART NUMBERING SCHEDULE  
P= available, x = not available, ASK = call Technical Sales  
Example:  
EM38GT33-38.880-2.5/-30+75  
Series Description  
TCXO = EM38GT  
VCTCXO = VEM38GT  
VEM38GT 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.)  
Supply Voltage  
28 = 2.8VDC  
3 = 3.0VDC  
33 = 3.3 VDC  
5 = 5.0 VDC  
Frequency Deviation: ±6.0 ppm min. (Vcon = +4.5V±1.0V)  
Slope Polarity:  
Positive (increase of control voltage increases  
output frequency.)  
Frequency (MHz)  
Stability over OTR (±ppm)  
Operating Temperature Range (OTR) (°C)  
Lower and upper limits.  
Input Impedance:  
50k minimum  
Modulation Bandwidth: 20kHz minimum  
Linearity: ±10% maximum  
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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