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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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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