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VEM44K33-26.000-3.0/-20+70

更新时间： 2024-11-03 08:46:55
品牌 Logo 应用领域
EUROQUARTZ /
页数 文件大小 规格书
1页 122K
描述
HCMOS Output Clock Oscillator

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VEM44K33-26.000-3.0/-20+70 数据手册

  
QUARTZ  
EURO  
TCXO  
EM44K ULTRA-LOW CURRENT  
HCMOS 11.4 x 9.6 x 3.0mm SMD  
Highly stable CMOS TCXO with ultra-low supply current  
Industry-standard SMD package  
Consumes less than 4mA at 20.0MHz with 3.3V supply  
Low phase noise  
RoHS compliant  
OUTLINES AND DIMENSIONS  
DESCRIPTION  
EM44K TCXOs and VCTCXOs are packaged in a 11.4 x 9.6 x 3.0mm  
ceramic SMD package. The part offers the stability of a TCXO and the  
design convenience of HCMOS output with ultra-low current  
consumption.  
SPECIFICATION  
Product Code  
TCXO:  
EM44K  
VCTCXO:  
VEM44K  
Frequency Range:  
Output Waveform:  
12.8MHz to 26.0MHz  
HCMOS  
Initial Calibration Tolerance:  
Standard Frequencies:  
<±2.0ppm at +25°±2°C  
12.8, 13.0, 14.4, 15.36, 16.0,  
16.384, 16.8, 19.2, 19.44,  
19.68, 20.0 and 26.0MHz  
(
.)  
Operating Temperature Range:  
Frequency Stability  
vs. Temperature  
vs. Ageing:  
±1.0 ppm max. first year  
vs. Voltage Change:  
vs. Load Change:  
vs. Reflow (SMD type):  
±1.0 ppm max. ±10% change  
±0.3 ppm max. ±10% change  
±1.0ppm max. for one reflow  
(
)
Supply Voltage:  
+2.8, 3.0 or 3.3 Volts  
Current Consumption:  
Output Logic Levels:  
Rise and Fall Times:  
Duty Cycle:  
4ns typical with 15pF load  
50%±5%  
Start-up Time:  
Output Load:  
5ms typical, 10ms max.  
15pF  
Fanout (drive capability):  
12mA typical, 17mA max.  
(at TTL level)  
RMS Period Jitter:  
3ps max. (1 Sigma, 1000  
samples; capacitive coupling  
between Vdd and Ground).  
RoHS compliant and pB free  
16mm tape, 8mm pitch  
1000 pieces per reel.  
VEM44K VOLTAGE CONTROL SPECIFICATION  
Control Voltage:  
Slope Polarity:  
±5 to ±12ppm for +1.5 ±1.5 Volts  
Positive  
RoHS Status:  
Packaging:  
Linearity:  
6% typical, 10% maximum  
CURRENT CONSUMPTION  
Input Voltage  
+3.0V  
Frequency  
+2.8V  
+3.3V  
SSB PHASE NOISE at 25°C  
12.800MHz  
13.000MHz  
14.400MHz  
16.384MHz  
19.200MHz  
19.440MHz  
20.000MHz  
26.000MHz  
2.3mA typ.  
2.5mA typ.  
2.6mA typ.  
2.8mA typ.  
3.2mA typ.  
3.2mA typ.  
3.2mA typ.  
3.6mA typ.  
2.4mA typ. 2.6mA typ.  
2.6mA typ. 2.8mA typ.  
2.8mA typ. 3.1mA typ.  
3.0mA typ. 3.2mA typ.  
3.3mA typ. 3.6mA typ.  
3.4mA typ. 3.7mA typ.  
3.4mA typ. 3.7mA typ.  
3.8mA typ. 4.1mA typ.  
Offset  
100Hz  
1kHz  
10kHz  
100kHz  
1MHz  
Part =  
VEM44K30  
at 13.000MHz  
(dBc/Hz)  
-80  
-110  
-130  
-135  
-142  
PART NUMBER FORMAT  
Example:  
EM44K33-20.000-2.5/-30+75  
FREQUENCY STABILITY OVER TEMPERATURE  
Series Description  
TCXO = EM44K  
VCTCXO = VEM44K  
Stability (ppm)  
0 ~ +50  
±1.0  
P
±2.0  
P
±2.5  
P
±3.0  
P
±4.0  
P
±5.0  
P
Supply Voltage  
28=2.8V, 30=3.0V, 33=3.3VDC  
Frequency (MHz)  
Stability over OTR (±ppm)  
Operating Temperature Range (OTR)  
Lower and upper limits (°C)  
-10 ~ +60  
-20 ~ +70  
-30 ~ +75  
-40 ~ +85  
ASK  
X
P
P
P
P
P
Temp.  
Range (°C)  
P
P
P
P
P
P
X
P
P
P
P
X
X
X
ASK  
ASK  
P
P = available, x = not available, ASK = call Technical Sales  
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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