VEM57T28-27.0-1.5/-20+70

更新时间:2024-10-30 04:53:59
品牌:EUROQUARTZ
描述:HCMOS Output Clock Oscillator, 27MHz Nom, ROHS COMPLIANT, MINIATURE, CERAMIC, SMD, 4 PIN

VEM57T28-27.0-1.5/-20+70 概述

HCMOS Output Clock Oscillator, 27MHz Nom, ROHS COMPLIANT, MINIATURE, CERAMIC, SMD, 4 PIN TCVCXO

VEM57T28-27.0-1.5/-20+70 规格参数

是否Rohs认证: 符合生命周期:Obsolete
Reach Compliance Code:unknown风险等级:5.84
其他特性:SYMMETRY 55/45 ALSO POSSIBLE老化:1 PPM/FIRST YEAR
最大控制电压:2.5 V最小控制电压:0.5 V
最长下降时间:10 ns频率调整-机械:NO
频率偏移/牵引率:6 ppm频率稳定性:1.5%
安装特点:SURFACE MOUNT标称工作频率:27 MHz
最高工作温度:70 °C最低工作温度:-20 °C
振荡器类型:HCMOS输出负载:15 pF
物理尺寸:7.0mm x 5.0mm x 2.5mm最长上升时间:10 ns
标称供电电压:2.8 V表面贴装:YES
最大对称度:60/40 %

VEM57T28-27.0-1.5/-20+70 数据手册

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QUARTZ  
EURO  
TCXO  
EM57T Series  
HCMOS 7 x 5 x 2.5mm SMD, MHz Range  
Miniature 7 x 5 x 2.5mm SMD package  
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  
EM57T - OUTLINES AND DIMENSIONS  
DESCRIPTION  
EM57T series TCXOs are packaged in a miniature 4 pad ceramic SMD  
package. 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:  
EM57T  
VCTCXO:  
VEM57T  
Frequency Range:  
Output Waveform:  
Initial Calibration Tolerance:  
Standard Frequencies:  
1.25MHz to 156.0MHz  
Squarewave, HCMOS  
<±2.0ppm 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)  
+2.8, +3.0, +3.3 or +5.0V  
(See table)  
vs. Voltage Change:  
vs. Load Change:  
vs. Reflow (SMD type):  
VEM57T VOLTAGE CONTROL SPECIFICATION  
Control Voltage: Standard = +1.5±1.0Volts for all input  
Supply Voltage:  
voltages. (Contact technical sales if  
+2.5±2.0 Volts is required.)  
Frequency Deviation: ±6.0 ppm min. (Vcon = +4.5V±1.0V)  
Output Logic Levels:  
Logic High: 90% Vdd min.  
Logic Low: 10% Vdd max.  
10ns max.  
50%±10% standard,  
50%±5% option  
5ms typical, 10ms max.  
See table below  
15pF  
Rise and Fall Times:  
Duty Cycle:  
Slope Polarity:  
Positive (increase of control voltage increases  
output frequency.)  
50k minimum  
Input Impedance:  
Start-up Time:  
Current Consumption:  
Output Load:  
Modulation Bandwidth: 20kHz minimum  
Linearity: ±10% maximum  
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  
ASK  
P
P
x
P
P
P
x
Part =  
M57T33  
-10 ~ +60  
x
x
x
x
P
P
at 155.250Mhz  
(dBc/Hz)  
-72  
-110  
-125  
-132  
-125  
Temperature  
-20 ~ +70  
Range (°C)  
P
P
-30 ~ +75  
-40 ~ +85  
x
P
PP  
P
x
x
x
PART NUMBERING PROCEDURE  
P= available, x = not available, ASK = call Technical Sales  
Example:  
EM57T33-38.880-2.5/-30+75  
Series Description  
TCXO = EM57T  
INPUT VOLTAGE & CURRENT CONSUMPTION  
VCTCXO = VEM57T  
Input Voltage/  
Frequency  
+2.8V  
+3.0  
+3.3V  
+5.0 V  
Supply Voltage  
28 = 2.8VDC  
3 = 3.0VDC  
33 = 3.3 VDC  
5 = 5.0 VDC  
Frequency (MHz)  
8.192MHz  
10.0MHz  
2mA  
3mA  
2mA  
4mA  
5mA  
7mA  
77.760MHz  
155.520MHz  
14mA  
26mA  
17mA  
35mA  
32mA  
50mA  
Stability over OTR (±ppm)  
Operating Temperature Range (OTR) (°C)  
Lower and upper limits.  
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  

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