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首页新闻中心关于如何确定石英晶振中峰与峰之间的抖动

关于如何确定石英晶振中峰与峰之间的抖动

来源：http://www.jinluodz.com 作者：金洛鑫电子 2024年01月05

Regarding how to determine peak-to-peak jitter,Cardinal Crystal Oscillator has been determined to accurately measure crystal oscillator jitter, below 1 picosecond at OR, which is currently the only method that can be used to measure 6G crystal oscillator phase noise and calculate RMS jitter. Please see our application note "Crystal Oscillators for Low jitter Applications" for a full explanation. To measure the phase noise of a crystal oscillator, we use a dual-source method. This results in a sideband measurement of the phase within a single 1Hz bandwidth within a specific offset frequency range. The single sideband phase noise results in integration over a specified frequency band, typically 10Hz to 1MHz or 12kHz to 20MHz, depending on the application. SONET requires a bandwidth of 12kHz to 20MHz. This frequency domain integrates phase noise (in dBc/Hz) which is then converted into time, and RMS jitter (in picoseconds).

关于如何确定石英晶振中峰与峰之间的抖动,Cardinal晶振已确定精确测量晶体振荡器的抖动，在OR处低于1皮秒，这是目前唯一的方法,可用于测量6G晶振相位噪声并计算有效值抖动。请参阅我们的应用说明“晶体振荡器用于低抖动应用“的完整解释。测量晶体振荡器的相位噪声，我们使用双源方法。这导致单个1Hz带宽内相位的边带测量在特定偏移频率范围内。单边带相位噪声结果为在指定的频率带上积分，通常为10Hz至1MHz或12kHz至20MHz，具体取决于应用程序。SONET要求带宽为12kHz至20MHz。此频域集成相位噪声（以dBc/Hz为单位）然后转换为时间,RMS抖动（以皮秒为单位）。

In non-PLL oscillators with Cardinal crystal oscillators, the RMS jitter has a random Gaussian distribution because no phase-locked loop is used. This result is non-Gaussian in the absence of discrete spurious and multimodal distributions. Thus, there is little or no deterministic jitter power when powered by low noise. When the jitter has a Gaussian response, the RMS jitter is a standard deviation or a sigma value

在Cardinal晶振的非PLL振荡器中，RMS抖动具有随机高斯分布，因为没有使用锁相环路。这个结果在缺乏离散杂散和多模态的情况下非高斯分布。因此，很少或没有由低噪声供电时的确定性抖动电源。当抖动具有高斯时响应，RMS抖动是标准差或一个西格玛值。

The crystal oscillator used in the basic assembly has a very high Q value. Load the Q's oscillator resonator loop from 10,000 to more than 100,000. When the oscillator stage generates a signal, the frequency can reside in the oscillation bandwidth. However, for high-Q resonators with narrow oscillator bandwidths, oscillators can produce very low jitter.

基本组件中使用的石英晶体振荡器具有非常高的Q值。加载的Q的振荡器谐振器环路在10，000到超过100，000。当振荡器级产生信号，频率可以驻留在振荡带宽。但是，对于高Q谐振器实现窄振荡带宽、振荡器可以制造出非常低的抖动。

A Gauss distributed component oscillator with radix jitter, the mean of the period is located in the center of the Gaussian curve. The standard deviation (1 sigma) is defined as containing 68.26% of the total oscillations that occur. This window is placed on one side of the mean. The 1 sigma (standard deviation) value is the oscillator output signal. As the standard number deviates from the mean increases, the probability oscillator produces a significantly reduced signal with this period deviation. At 14.069 sigma, the probability is 1:112. Fibre Channel specifications require 14 sigma reliability.

基数抖动的高斯分布组件振荡器，周期的平均值位于高斯曲线的中心。标准偏差（1西格玛）定义为包含发生的总振荡的68.26%。这窗口放置在均值的一侧。1西格玛（标准偏差）值是振荡器输出信号。作为标准的数量偏离均值增加，几率振荡器产生该周期偏差的信号大大减少。在14.069西格玛时，概率为1：1012.光纤通道规格要求14西格玛可靠性。

Determining peak-to-peak (Pk to Pk) values depends on the reliability required. The higher the reliability, the greater the Pk to Pk value, even if the probability of occurrence is with a higher Sigma value. At 14 sigma, the probability is close to 1:1012. This is considered the Pk to Pk jitter of the standard RMS jitter value that we use to determine. If the component oscillator has 2 picosecond RMS jitter, the Pk to Pk jitter is 28 picoseconds.

Cardinal晶振确定峰到峰（Pk到Pk）值取决于关于所需的可靠性。可靠性越高,Pk到Pk值越大，即使发生概率随着更高的西格玛值。在14西格玛时，概率接近1：1012.这被认为是我们用来确定的标准RMS抖动值的Pk到Pk抖动。如果组件振荡器具有2皮秒RMS抖动，Pk到Pk抖动为28皮秒。

制造商零件编号	制造商	系列	频率	频率稳定性	频率容差	负载电容
CSM4Z-A2B3C3-40-12.0D18	Cardinal晶振	CSM4	12 MHz	±30ppm	±30ppm	18pF
CSM1Z-A5B2C3-40-14.7456D20	Cardinal晶振	CSM1	14.7456 MHz	±50ppm	±30ppm	20pF
CSM1Z-A0B2C3-100-5.0D18	Cardinal晶振	CSM1	5 MHz	±50ppm	±30ppm	18pF
CSM1Z-A5B2C5-40-14.7456D18	Cardinal晶振	CSM1	14.7456 MHz	±50ppm	±20ppm	18pF
CSM1Z-A2B2C3-40-30.0D18	Cardinal晶振	CSM1	30 MHz	±50ppm	±30ppm	18pF
CSM4Z-A2B3C3-60-6.0D18	Cardinal晶振	CSM4	6 MHz	±30ppm	±30ppm	18pF
CX325Z-A5B2C5-50-20.0D18	Cardinal晶振	CX325	20 MHz	±50ppm	±20ppm	18pF
CSM4Z-A2B3C3-40-10.0D18	Cardinal晶振	CSM4	10 MHz	±30ppm	±30ppm	18pF
CSM4Z-A2B3C3-40-29.49152D18-F	Cardinal晶振	CSM4	29.49152 MHz	±30ppm	±30ppm	18pF
CSM1Z-A0B2C3-50-15.360D18	Cardinal晶振	CSM1	15.36 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-50-16.257D18	Cardinal晶振	CSM1	16.257 MHz	±50ppm	±30ppm	18pF
CSM1Z-A5B2C5-40-11.0592D18	Cardinal晶振	CSM1	11.0592 MHz	±50ppm	±20ppm	18pF
CSM1Z-A0B2C3-50-18.0D18	Cardinal晶振	CSM1	18 MHz	±50ppm	±30ppm	18pF
CSM1Z-A5B2C3-120-6.144D18	Cardinal晶振	CSM1	6.144 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-80-13.5D18	Cardinal晶振	CSM1	13.5 MHz	±50ppm	±30ppm	18pF
CSM1Z-A5B2C3-40-14.31818D18	Cardinal晶振	CSM1	14.31818 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-50-22.1184D18	Cardinal晶振	CSM1	22.1184 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-150-4.9152D18	Cardinal晶振	CSM1	4.915 MHz	±50ppm	±30ppm	18pF
CSM1Z-A5B2C5-150-3.6864D18	Cardinal晶振	CSM1	3.6864 MHz	±50ppm	±20ppm	18pF
CSM1Z-A0B2C3-100-7.3728D18	Cardinal晶振	CSM1	7.3728 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-50-25.175D18	Cardinal晶振	CSM1	25.175 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-50-28.63636D18	Cardinal晶振	CSM1	28.63636 MHz	±50ppm	±30ppm	18pF
CSM1Z-A5B2C3-60-9.216D18	Cardinal晶振	CSM1	9.216 MHz	±50ppm	±30ppm	18pF
CSM1Z-A5B2C3-120-6.0D18	Cardinal晶振	CSM1	6 MHz	±50ppm	±30ppm	18pF
CSM4Z-A2B3C3-40-26.0D18-F	Cardinal晶振	CSM4	26 MHz	±30ppm	±30ppm	18pF
CSM1Z-A0B2C3-50-24.0D18	Cardinal晶振	CSM1	24 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-80-10.0D18	Cardinal晶振	CSM1	10 MHz	±50ppm	±30ppm	18pF
CSM1Z-A5B2C3-40-12.0D18	Cardinal晶振	CSM1	12 MHz	±50ppm	±30ppm	18pF
CSM1-A1B2C3-50-20.0D16	Cardinal晶振	CSM1	20 MHz	±50ppm	±30ppm	16pF
CSM1Z-A0B2C3-100-6.144D18	Cardinal晶振	CSM1	6.144 MHz	±50ppm	±30ppm	18pF
CSM1Z-A1B2C3-90-8.0D18	Cardinal晶振	CSM1	8 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-80-12.0D18	Cardinal晶振	CSM1	12 MHz	±50ppm	±30ppm	18pF
CSM4Z-A2B3C3-180-4.0D18	Cardinal晶振	CSM4	4 MHz	±30ppm	±30ppm	18pF
CSM1Z-A5B2C5-60-8.0D18	Cardinal晶振	CSM1	8 MHz	±50ppm	±20ppm	18pF
CSM1Z-A5B2C3-60-8.0D18	Cardinal晶振	CSM1	8 MHz	±50ppm	±30ppm	18pF
CSM1Z-A5B2C5-60-24.0D18	Cardinal晶振	CSM1	24 MHz	±50ppm	±20ppm	18pF
CSM1Z-A5B2C5-50-20.0D18	Cardinal晶振	CSM1	20 MHz	±50ppm	±20ppm	18pF
CSM4Z-A2B3C3-60-8.0D18	Cardinal晶振	CSM4	8 MHz	±30ppm	±30ppm	18pF
CSM4Z-A2B3C3-40-25.0D18-F	Cardinal晶振	CSM4	25 MHz	±30ppm	±30ppm	18pF
CX5Z-A5B2C5-40-24.0D18	Cardinal晶振	CX5	24 MHz	±50ppm	±20ppm	18pF
CX5Z-A1B2C5-40-24.0D18	Cardinal晶振	CX5	24 MHz	±50ppm	±20ppm	18pF
CX5Z-A5B2C5-50-16.0D18	Cardinal晶振	CX5	16 MHz	±50ppm	±20ppm	18pF
CX5Z-A5B2C5-40-27.0D18	Cardinal晶振	CX5	27 MHz	±50ppm	±20ppm	18pF
CX5Z-A0B2C5-50-16.0D18	Cardinal晶振	CX5	16 MHz	±50ppm	±20ppm	18pF
CX5Z-A2B2C5-40-10.0D18	Cardinal晶振	CX5	10 MHz	±50ppm	±20ppm	18pF
CX532Z-A2B3C5-70-1966080D18	Cardinal晶振	CX532	19.6608 MHz	±30ppm	±20ppm	18pF
CX532Z-A2B3C5-70-33.0D18	Cardinal晶振	CX532	33 MHz	±30ppm	±20ppm	18pF
CX532Z-A5B3C5-70-27.0D18	Cardinal晶振	CX532	27 MHz	±30ppm	±20ppm	18pF
CX532AZ-A5B2C5-70-25.0D18	Cardinal晶振	CX532	25 MHz	±50ppm	±20ppm	18pF
CX532Z-A2B3C5-70-27.0D18	Cardinal晶振	CX532	27 MHz	±30ppm	±20ppm	18pF
CX532Z-A2B3C5-70-30.0D18	Cardinal晶振	CX532	30 MHz	±30ppm	±20ppm	18pF
CPFBZ-A2C4-32.768KD6	Cardinal晶振	CPFB	32.768 kHz	-	±10ppm	6pF
CPFBZ-A2C5-32.768KD12.5	Cardinal晶振	CPFB	32.768 kHz	-	±20ppm	12.5pF
CPFBZ-A2C4-32.768KD12.5	Cardinal晶振	CPFB	32.768 kHz	-	±10ppm	12.5pF
CPFBZ-A2C5-32.768KD6	Cardinal晶振	CPFB	32.768 kHz	-	±20ppm	6pF
CX532Z-A2B3C5-70-8.0D18	Cardinal晶振	CX532	8 MHz	±30ppm	±20ppm	18pF
CX532Z-A2B3C5-70-16.0D18	Cardinal晶振	CX532	16 MHz	±30ppm	±20ppm	18pF
CX532Z-A2B3C5-70-12.0D18	Cardinal晶振	CX532	12 MHz	±30ppm	±20ppm	18pF
CX5Z-ARB2C5-70-7.3728D18	Cardinal晶振	CX5	7.3728 MHz	±50ppm	±20ppm	18pF
CX5Z-A2B2C5-70-8.0D18	Cardinal晶振	CX5	8 MHz	±50ppm	±20ppm	18pF
CSM1Z-A0B2C3-70-14.7456D18	Cardinal晶振	CSM1	14.7456 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-50-16.000312D18	Cardinal晶振	CSM1	16.000312 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-50-16.0D18	Cardinal晶振	CSM1	16 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-50-17.734475D18	Cardinal晶振	CSM1	17.734475 MHz	±50ppm	±30ppm	18pF
CSM1Z-A0B2C3-80-11.0592D18	Cardinal晶振	CSM1	11.0592 MHz	±50ppm	±30ppm	18pF
CSM1-A1B2C3-70-14.7456D20	Cardinal晶振	CSM1	14.7456 MHz	±50ppm	±30ppm	20pF
CSM1Z-A1B2C3-200-3.6864D20	Cardinal晶振	CSM1	3.6864 MHz	±50ppm	±30ppm	20pF

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