Cardinal晶振使用双源方法有效测量石英晶振中峰与峰之间的抖动
来源:http://taiheth.com 作者:泰河盛电子 2024年03月07
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,可用于测量石英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)。
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。
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。
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。
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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