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1XXB24000MEA|DSB221SDN晶振|24M温补晶振

1XXB24000MEA晶振产品尺寸图

1XXB24000MEA晶振产品电气表

关于1XXB24000MEA|DSB221SDN晶振|24M温补晶振 产品安装的注意事项

终端/陆上布局/金属屏蔽孔

1端子A通孔不在底部（安装侧）。
2土地图案布局/金属掩模孔以下土地图案为参考设计。电气特性应满足安装在这片土地上的要求。在测试用地和安装用地不相连的范围内，可以改变接地方式。

对电特性没有任何影响。面罩厚度建议为0.12毫米。

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.

CMX309FBC9.8304MTR晶振9.8304MHz晶振CMX309FBC27.000M-UT晶振27MHz晶振CMX309FLC28.322M-UT晶振28.322MHz石英晶振 CMX309FLC12.288MT晶振12.288MHz晶振CMX309FBC10.000MTR晶振10MHz晶振CMX309FBC27.000M-UT晶振27MHz晶振CMX309FLC28.63636M-UT晶振28.63636MHz石英晶振CMX309FLC12.352MT晶振12.352MHz晶振CMX309FBC10.000MTR晶振10MHz晶振CMX309HBC32.000M-UT晶振32MHz晶振CMX309FLC28.63636M-UT晶振28.63636MHz石英晶振 CMX309FLC12.352MT晶振

CMX309晶振产品实物图

12.352MHz晶振CMX309FBC11.0592MTR晶振11.0592MHz晶振CMX309HBC32.000M-UT晶振32MHz晶振CMX309FLC29.498928M-UT晶振29.498928MHz石英晶振 CMX309FLC13.500MT晶振13.5MHz晶振CMX309FBC11.0592MTR晶振11.0592MHz晶振CMX309HBC32.768M-UT晶振32.768MHz晶振CMX309FLC29.498928M-UT晶振29.498928MHz石英晶振 CMX309FLC13.500MT晶振13.5MHz晶振CMX309FBC11.2896MTR晶振11.2896MHz晶振CMX309HBC32.768M-UT晶振32.768MHz晶振CMX309FLC30.000M-UT晶振30MHz石英晶振 CMX309FLC14.31818MT晶振14.31818MHz晶振CMX309FBC11.2896MTR晶振11.2896MHz晶振CMX309HBC33.000M-UT晶振33MHz晶振CMX309FLC30.000M-UT晶振30MHz石英晶振 CMX309FLC14.31818MT晶振14.31818MHz晶振CMX309FBC12.000MTR晶振12MHz晶振CMX309HBC33.000M-UT晶振33MHz晶振CMX309HWC32.000M-UT晶振32MHz石英晶振 CMX309FLC14.7456MT晶振14.7456MHz晶振CMX309FBC12.000MTR晶振12MHz晶振CMX309HBC33.3333M-UT晶振33.3333MHz晶振CMX309HWC32.000M-UT晶振32MHz石英晶振

CMX309晶振产品尺寸图

 CMX309FLC14.7456MT晶振14.7456MHz晶振CMX309FBC12.288MTR晶振12.288MHz晶振CMX309HBC33.3333M-UT晶振33.3333MHz晶振CMX309HWC32.768M-UT晶振32.768MHz石英晶振 CMX309FLC15.360MT晶振15.36MHz晶振CMX309FBC12.288MTR晶振12.288MHz晶振CMX309HBC36.864M-UT晶振36.864MHz晶振CMX309HWC32.768M-UT晶振32.768MHz石英晶振 CMX309FLC15.360MT晶振15.36MHz晶振CMX309FBC14.31818MTR晶振14.31818MHz晶振CMX309HBC36.864M-UT晶振36.864MHz晶振CMX309HWC33.000M-UT晶振33MHz石英晶振 CMX309FLC16.000MT晶振16MHz晶振CMX309FBC14.31818MTR晶振14.31818MHz晶振CMX309HBC40.000M-UT晶振40MHz晶振CMX309HWC33.000M-UT晶振33MHz石英晶振 CMX309FLC16.000MT晶振16MHz晶振CMX309FBC14.7456MTR晶振14.7456MHz晶振CMX309HBC40.000M-UT晶振40MHz晶振CMX309HWC33.8688M-UT晶振33.8688MHz石英晶振 CMX309FLC16.384MT晶振16.384MHz晶振CMX309FBC14.7456MTR晶振14.7456MHz晶振CMX309HBC48.000M-UT晶振48MHz晶振CMX309HWC33.8688M-UT晶振33.8688MHz石英晶振 CMX309FLC16.384MT晶振16.384MHz晶振CMX309FBC16.000MTR晶振16MHz晶振CMX309HBC48.000M-UT晶振48MHz晶振CMX309HWC40.000M-UT晶振40MHz石英晶振 CMX309FLC16.6666MT晶振16.6666MHz晶振CMX309FBC16.000MTR晶振16MHz晶振CMX309HBC50.000M-UT晶振50MHz晶振CMX309HWC40.000M-UT晶振40MHz石英晶振 CMX309FLC16.6666MT晶振16.6666MHz晶振CMX309FBC16.384MTR晶振16.384MHz晶振CMX309HBC50.000M-UT晶振50MHz晶振CMX309HWC48.000M-UT晶振48MHz石英晶振 CMX309FLC17.734475MT晶振17.734475MHz晶振CMX309FBC16.384MTR晶振16.384MHz晶振CMX309HBC53.125M-UT晶振53.125MHz晶振CMX309HWC48.000M-UT晶振48MHz石英晶振 CMX309FLC17.734475MT晶振17.734475MHz晶振CMX309FBC18.432MTR晶振18.432MHz晶振CMX309HBC53.125M-UT晶振53.125MHz晶振CMX309HWC49.152M-UT晶振49.152MHz石英晶振 CMX309FLC18.000MT晶振18MHz晶振CMX309FBC18.432MTR晶振18.432MHz晶振CMX309FLC1.544M-UT晶振1.544MHz晶振CMX309HWC49.152M-UT晶振49.152MHz石英晶振 CMX309FLC18.000MT晶振18MHz晶振CMX309FBC20.000MTR晶振20MHz晶振CMX309FLC1.544M-UT晶振1.544MHz晶振CMX309HWC50.000M-UT晶振50MHz石英晶振 CMX309FLC18.432MT晶振18.432MHz晶振CMX309FBC20.000MTR晶振20MHz晶振CMX309FLC1.8432M-UT晶振1.8432MHz晶振CMX309HWC50.000M-UT晶振50MHz石英晶振 CMX309FLC18.432MT晶振18.432MHz晶振CMX309FBC24.000MTR晶振24MHz晶振CMX309FLC1.8432M-UT晶振1.8432MHz晶振CMX309HWC53.125M-UT晶振53.125MHz石英晶振 CMX309FLC19.6608MT晶振19.6608MHz晶振CMX309FBC24.000MTR晶振24MHz晶振CMX309FLC2.000M-UT晶振2MHz晶振CMX309HWC53.125M-UT晶振53.125MHz石英晶振 CMX309FLC19.6608MT晶振19.6608MHz晶振CMX309FBC24.576MTR晶振24.576MHz晶振CMX309FLC2.000M-UT晶振2MHz晶振CMX309FLC27.000MB晶振27MHz石英晶振 CMX309FLC19.6608MT晶振19.6608MHz晶振CMX309FBC24.576MTR晶振24.576MHz晶振CMX309FLC2.048M-UT晶振2.048MHz晶振CMX309FLC6.000MB晶振6MHz石英晶振 CMX309FLC20.000MT晶振20MHz晶振CMX309FBC25.000MTR晶振25MHz晶振CMX309FLC2.048M-UT晶振2.048MHz晶振CMX309FBB19.6608MTR晶振19.6608MHz石英晶振 CMX309FLC20.000MT晶振20MHz晶振CMX309FBC25.000MTR晶振25MHz晶振CMX309FLC2.4576M-UT晶振2.4576MHz晶振CMX309FBB19.6608MTR晶振19.6608MHz石英晶振 CMX309FLC22.1184MT晶振22.1184MHz晶振CMX309FBC27.000MTR晶振27MHz晶振CMX309FLC2.4576M-UT晶振2.4576MHz晶振CMX309FBC30.000MTR晶振30MHz石英晶振 CMX309FLC22.1184MT晶振22.1184MHz晶振

CMX309晶振产品参数表

CMX309FBC27.000MTR晶振27MHz晶振CMX309FLC3.072M-UT晶振3.072MHz晶振CMX309FBC30.000MTR晶振30MHz石英晶振 CMX309FLC24.000MT晶振24MHz晶振CMX309HBC32.000MTR晶振32MHz晶振CMX309FLC3.072M-UT晶振3.072MHz晶振CMX309FLC10.240MTR晶振10.24MHz石英晶振 CMX309FLC24.000MT晶振24MHz晶振CMX309HBC32.000MTR晶振32MHz晶振CMX309FLC3.579545M-UT晶振3.579545MHz晶振CMX309FLC10.240MTR晶振10.24MHz石英晶振 CMX309FLC24.576MT晶振24.576MHz晶振CMX309HBC32.768MTR晶振32.768MHz晶振CMX309FLC3.579545M-UT晶振3.579545MHz晶振CMX309FLC16.257MTR晶振16.257MHz石英晶振 CMX309FLC24.576MT晶振24.576MHz晶振CMX309HBC32.768MTR晶振32.768MHz晶振CMX309FLC3.6864M-UT晶振3.6864MHz晶振CMX309FLC16.257MTR晶振16.257MHz石英晶振 CMX309FLC25.000MT晶振25MHz晶振CMX309HBC33.000MTR晶振33MHz晶振CMX309FLC3.6864M-UT晶振3.6864MHz晶振CMX309HBC3.6864MTR晶振3.6864MHz石英晶振 CMX309FLC25.000MT晶振25MHz晶振CMX309HBC33.000MTR晶振33MHz晶振CMX309FLC4.000M-UT晶振4MHz晶振CMX309HBC3.6864MTR晶振3.6864MHz石英晶振 CMX309FLC25.175MT晶振25.175MHz晶振CMX309HBC33.3333MTR晶振33.3333MHz晶振CMX309FLC4.000M-UT晶振4MHz晶振CMX309FBC22.1184M-UT晶振22.1184MHz石英晶振 CMX309FLC25.175MT晶振25.175MHz晶振CMX309HBC33.3333MTR晶振33.3333MHz晶振CMX309FLC4.096M-UT晶振4.096MHz晶振CMX309FBC28.322MTR晶振28.322MHz石英晶振 CMX309FLC27.000MT晶振27MHz晶振CMX309HBC36.864MTR晶振36.864MHz晶振CMX309FLC4.096M-UT晶振4.096MHz晶振CMX309FBC4.9152MTR晶振4.9152MHz石英晶振 CMX309FLC27.000MT晶振27MHz晶振CMX309HBC36.864MTR晶振36.864MHz晶振CMX309FLC4.9152M-UT晶振4.9152MHz晶振CMX309HBC33.333300MTR晶振33.3333MHz石英晶振 CMX309FLC28.322MT晶振28.322MHz晶振CMX309HBC40.000MTR晶振40MHz晶振CMX309FLC4.9152M-UT晶振4.9152MHz晶振CMX309HWC36.864MTR晶振36.864MHz石英晶振 CMX309FLC28.322MT晶振28.322MHz晶振CMX309HBC40.000MTR晶振40MHz晶振CMX309FLC5.000M-UT晶振5MHz晶振CMX309FLC7.3728M-UT晶振7.3728MHz石英晶振 CMX309FLC28.63636MT晶振28.63636MHz晶振CMX309HBC48.000MTR晶振48MHz晶振CMX309FLC5.000M-UT晶振5MHz晶振CMX309FLC8.000M-UT晶振8MHz石英晶振 CMX309FLC28.63636MT晶振28.63636MHz晶振CMX309HBC48.000MTR晶振48MHz晶振CMX309FLC6.000M-UT晶振6MHz晶振CMX309FLC8.000M-UT晶振8MHz石英晶振 CMX309FLC29.498928MT晶振29.498928MHz晶振CMX309HBC50.000MTR晶振50MHz晶振CMX309FLC6.000M-UT晶振6MHz晶振CMX309FLC8.192M-UT晶振8.192MHz石英晶振 CMX309FLC29.498928MT晶振29.498928MHz晶振CMX309HBC50.000MTR晶振50MHz晶振CMX309FLC6.144M-UT晶振6.144MHz晶振CMX309FLC8.192M-UT晶振8.192MHz石英晶振 CMX309FLC30.000MT晶振30MHz晶振CMX309HBC53.125MTR晶振53.125MHz晶振CMX309FLC6.144M-UT晶振6.144MHz晶振CMX309FLC9.8304M-UT晶振9.8304MHz石英晶振 CMX309FLC30.000MT晶振30MHz晶振CMX309HBC53.125MTR晶振53.125MHz晶振CMX309FLC7.3728M-UT晶振7.3728MHz晶振CMX309FBC1.8432M-UT晶振1.8432MHz石英晶振 CMX309HWC32.000MT晶振32MHz晶振CMX309FBC1.000M-UT晶振1MHz晶振CMX309FBC1.544M-UT晶振1.544MHz晶振CMX309FBC1.8432M-UT晶振1.8432MHz石英晶振 CMX309HWC32.000MT晶振32MHz晶振CMX309FBC1.000M-UT晶振1MHz晶振CMX309HWC32.768MT晶振32.768MHz晶振CMX309FBC1.544M-UT晶振1.544MHz石英晶振 晶振晶振晶振晶振晶振晶振CMX309HWC32.768MT晶振32.768MHz石英晶振