ECS-TXO-3225MV温补晶振非常适合无线连接和智能电网应用的常用型号频率为

ECS-TXO-3225MV-147.4-TR,ECS-TXO-3225MV-100-TR,ECS-TXO-3225MV-120-TR,ECS-TXO-3225MV-122-TR,

ECS-TXO-3225MV-147.4-TR,ECS-TXO-3225MV-160-TR,ECS-TXO-3225MV-200-TR,ECS-TXO-3225MV-240-TR,

ECS-TXO-3225MV-250-TR,ECS-TXO-3225MV-270-TR,ECS-TXO-3225MV-500-TR

Abracon提供工业市场解决方案AK2BDDF1-156.2500T

针对最快数据链路的功耗优化抖动性能
ClearClock系列振荡器支持通信、云计算、存储和射频应用的下一代性能要求。这些振荡器在低功耗方面领先业界，同时保持低至80fs的典型抖动。它们还提供FPGAs和IC所需的相位噪声性能，以支持超过56Gbps的串行数据速率。ClearClock系列包括锁相环和第三泛音解决方案，封装尺寸小至2.5x2.0mm石英晶振。
基于PLL的清零时钟解决方案
AX7系列经过优化，具有出色的均方根抖动性能（典型值为119），而功耗仅为130mW。AX7具有其性能级别中最宽的工厂可配置频率范围，从50MHz到2.1GHz。
AX5系列采用更小的5 x 3.2 mm尺寸，适用于下一代网络和射频应用。该系列在低功耗方面处于行业领先地位，同时保持125fs的典型抖动，非常适合超过56Gbps的串行数据链路。
三次泛音ClearClock解决方案
新款贴片晶振AK2A、AK2、AK3A、AX3和AK5系列的最低工作电压为1.8V，功耗通常为30mW，为低噪声差分振荡器提供了业界领先的低功耗。这些器件简化的第三泛音架构避免了基于锁相环（PLL）的乘法运算，整体功耗远低于其它高性能XO替代产品。

HEC，Inc. Hooray USA致力于提供卓越的质量，自1990年以来，世界领先的频率控制技术，同时保持极具竞争力的价格和快速的交货时间表。我们提供的产品包括：石英晶振，贴片晶振，石英晶体振荡器，时钟振荡器，TCXO温补晶振，VCXO压控晶振，OCXO恒温晶振，插件晶振等，应用领域非常广泛多样化的行业，包括电信、通讯设备，物联网，医疗，军事和国防、石油钻探、汽车和商业产品。

日本爱普生晶振型号VG3225EFN，是一款LV-PECL输出差分晶振，采用3225mm封装六脚贴片晶振，具有电压控制功能，小体积轻薄型，高精度，低抖动，低功耗，低损耗，低耗能，低电源电压，起振快等特点，此款6脚压电控制晶振频率选用范围从25M至250MHZ，被广泛用于无线基站，移动通信，高端智能设备，5G通讯设备，GPS，汽车电子等.

VG3225EFN压电控制晶振X1G005361000100用于无线基站应用

爱普生X1G005471001100压控晶振具有LV-PECL差分输出,5032mm晶振

世界领先的可编程振荡器制造商Cardinal Components公司推出CJ系列工厂可配置振荡器“XO”和压控振荡器“VCXO”。CJ系列频率范围从10MHz到1.5GHz。工作电压为2.5或3.3V。CJ系列温度范围是商业0-70℃和工业-40到+ 85℃。CJ系列提供5.0x7.0mm，5.0x3.2mm和2.5x2.0mm陶瓷表面贴装封装。产品输出选项为CMOS，LVDS和LVPECL差分晶振。CJ系列是低功耗兼容产品，与竞争解决方案相比，CMOS @（1至250 MHz）为20 mA，LVDS @（750MHz至1.5GHz）为23mA，而在54 mA @（750MHz）时为LVPECL配置到1.5GHz）。稳定性选项包括25和50PPM选项。相位抖动（12kHz-20MHz）0.9psRMS。

Cardinal晶振CJ系列晶体振荡器型号大全,CJAE7LZ-A7BR-024.000TS,差分晶振

About Crystal parameters description,Crystal Project Name

AT Cut Crystals

For precise frequency control in radio and line communication systems, quartz crystal resonators have proved indispensable. The material properties of crystalline quartz are such that quartz resonators display stableness and Q factors that cannot be matched by other types of resonator over the frequency range from 1 MHz to 200 MHz.

Equivalent Circuit

Fig-1 shows the conventionally accepted equivalent circuit of a crystal resonator at a frequency near its main mode of vibration. The inductance LI reiperesents the vibrating mass, the series capacitance CL the compliance of the quartz element and the resistance Rl the internal frication of the element, mechanical losses in the mounting system and acoustical losses to the surrounding environment.

The shunt capacitance Co is made up of the static capacitance between the electrodes, togettier with stray capacitances of the mounting system. 

There are two zero-phase frequencies associated with this simple circuit, one is at series resonance fs, another at antiresonance fa. When used in an oscillator, crystal units will operate at any frequency within the broken lines of Fig-2 as determined by the phase of the maintaining circuit.

By changing of this reactive condition, the crystal frequency may be trimmed in a limited extent. The degree to which this frequency may be varied (frequency pulling) is inversely proportional to the capacitance ratio r(C〇 /Ci).

Load Capacitance

Many practical oscillator circuits make use of a load capacitor CL in series or parallel with the crystal, either in order to provide a means for final frequency adjustment, or perhaps for modulation or temperature compensation purposes. For the crystal load capacitance. We looking into the circuit through the two crystal terminals, the load capacitance need to specified when the crystal is paralleled mode, crystal load capacitance is calculated as below: 

Frequency Pulling

In many applications a variable capacitor (trimmer) is used as the load reactive element to adjust the frequency. The fractional frequency range available between specified values of this load reactive element is called the pulling range (PR.) and it can be calculated by using the following formula: 

Sensitivity

A useful parameter to the design engineer is the pulling sensitivity (S) at a specified value of load capacitance. It is defined as the incremental fractional frequency change for an incremental change in load capacitance. It is normally expressed in ppm/pF (10-6/pF) and can be calculated from the formula: 

It is very important to define the mean load capacitance to enable the actual crystal frequency be set within the tolerances of the specified nominal frequency. It is also important to use, wherever possible, standard values of load capacitance; for example:20pF, 30pF.

Fig-3 shows the relationship between LO.; P.R. and S. 

Frequency Pulling Calculation

An approximation to the pulling for any crystal can be calculated from this simple formula:

Resistance

The equivalent circuit of the crystal has one other important parameter: This is Ri, the motional resistance. This parameter controls the Q of the crystal unit and will define the level of oscillation in any maintaining circuit. The load resonance for a given crystal unit depends upon the load capacitance with which that unit is intended to operate. The frequency of oscillation is the same in either series or parallel connection of the load capacitance.

If the external capacitance is designated the load resonance resistance may be calculated as follows:

The equivalent shunt or parallel resistance at load resonance frequency is approximately: 

It should be remembered that Ri does not change thus the effective parameters of any user network can be readily calculated.

Frequency Temperature Characteristics

The AT-cut crystal has a frequency temperature characteristic which may be described by a cubic function of temperature. This characteristic can be precisely controlled by small variations in the exact angle at which the crystal blank is cut from the original quartz bar. Fig,4 illustrates some typical cases. This cubic behaviour is in contrast to most other crystal cuts, which have parabolic temperature characteristics.

As a consequence, the AT-cut is generally the best choice when specifying a unit to operate over a wide temperature range, and is available in a range of frequencies from 1 to 200 MHz.