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首页企业博客 如何选择合适的振荡器四个关键问题有助于满足设计要求

如何选择合适的振荡器四个关键问题有助于满足设计要求

来源:http://www.zhaoxiandz.com 作者:zlh 2022年05月12
晶体振荡器通常是设计师最后考虑的元件之一,但是错误的部分可以很快扼杀一个设计。此外,搜索通过各种可用的振荡器和它们的能力令人困惑。有四个关键问题你应该问自己选择振荡器。您找到的答案将有助于确保您的满足设计要求。
你需要晶体还是振荡器?虽然它们可能看起来完全相同,并且共享许多规格、晶体和振荡器是非常不同的设备。包装好的水晶是一块石英,切割后抛光,以高Q值在特定频率共振。它没有包含驱动石英产生时钟输出的振荡器电路。相反,驱动电路位于晶体所在的器件内部已连接。
相比之下,晶体振荡器(XO)是一个完整的器件,包含石英晶体、振荡器电路、输出驱动器和潜在的锁相环路(PLL)。XO提供特定频率和信号的时钟输出格式,如CMOS、LVDS差分晶振和LVPECL。可以直接驱动芯片或通过缓冲区提供特定频率。振荡器是一个完整的单输出时钟发生器。大多数消费电子和电池供电应用使用片上系统(SoC) 集成振荡器电路和简单、低成本晶体的器件时钟合成。针对高端应用—数据中心、电信、工业 自动化等。—外部XO通常用于提供参考时序用于SoC的内部PLL。
使用片外时钟源非常有利,因为它提供了独立、隔离的参考时钟经过优化,可提供低抖动操作串扰最小。另一个显著的好处是振荡器整合了集成电源噪声抑制,最大限度地降低电路板级的影响时钟抖动噪声。

Manufacturer Part Number
原厂编码
Manufacturer
厂家
Series型号 Type 系列 Frequency
频率
Package / Case包装/封装
ABLS-16.000MHZ-B4-T Abracon LLC ABLS MHz Crystal 16MHz HC49/US
ABLS-8.000MHZ-B4-T Abracon LLC ABLS MHz Crystal 8MHz HC49/US
ABLS-25.000MHZ-B4-F-T Abracon LLC ABLS MHz Crystal 25MHz HC49/US
ABLS-4.9152MHZ-T Abracon LLC ABLS MHz Crystal 4.9152MHz HC49/US
ABLS-12.000MHZ-B2-T Abracon LLC ABLS MHz Crystal 12MHz HC49/US
ABLS-24.000MHZ-D2-T Abracon LLC ABLS MHz Crystal 24MHz HC49/US
ABLS-6.000MHZ-D-T Abracon LLC ABLS MHz Crystal 6MHz HC49/US
ABLS-25.000MHZ-B2F-T Abracon LLC ABLS MHz Crystal 25MHz HC49/US
ABLS-7.3728MHZ-B2-T Abracon LLC ABLS MHz Crystal 7.3728MHz HC49/US
ABLS-20.000MHZ-B2-T Abracon LLC ABLS MHz Crystal 20MHz HC49/US
ABLS-8.000MHZ-B2-T Abracon LLC ABLS MHz Crystal 8MHz HC49/US
ABLS-12.000MHZ-B4-T Abracon LLC ABLS MHz Crystal 12MHz HC49/US
ABLS-10.000MHZ-B2-T Abracon LLC ABLS MHz Crystal 10MHz HC49/US
ABLS-8.000MHZ-T Abracon LLC ABLS MHz Crystal 8MHz HC49/US
ABLS-8.000MHZ-D-T Abracon LLC ABLS MHz Crystal 8MHz HC49/US
ABLS2-12.000MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 12MHz HC49/US
ABLS-7.3728MHZ-T Abracon LLC ABLS MHz Crystal 7.3728MHz HC49/US
ABLS-3.6864MHZ-DT Abracon LLC ABLS MHz Crystal 3.6864MHz HC49/US
ABLS-14.7456MHZ-B4H-T Abracon LLC ABLS MHz Crystal 14.7456MHz HC49/US
AB38T-32.768KHZ Abracon LLC AB38T kHz Crystal (Tuning Fork) 32.768kHz Cylindrical Can, Radial
ABLS2-25.000MHZ-D4YF-T Abracon LLC ABLS2 MHz Crystal 25MHz HC49/US
ABLS2-8.000MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 8MHz HC49/US
ABLS-7.3728MHZ-B4-T Abracon LLC ABLS MHz Crystal 7.3728MHz HC49/US
ABLS-4.000MHZ-B4-T Abracon LLC ABLS MHz Crystal 4MHz HC49/US
ABLS-16.000MHZ-B2-T Abracon LLC ABLS MHz Crystal 16MHz HC49/US
ABLS-3.579545MHZ-B2-T Abracon LLC ABLS MHz Crystal 3.579545MHz HC49/US
ABLS-28.63636MHZ-B4-F-T Abracon LLC ABLS MHz Crystal 28.63636MHz HC49/US
ABLS-10.000MHZ-B4-T Abracon LLC ABLS MHz Crystal 10MHz HC49/US
ABLS-18.432MHZ-B2-T Abracon LLC ABLS MHz Crystal 18.432MHz HC49/US
ABLS-9.8304MHZ-B4-T Abracon LLC ABLS MHz Crystal 9.8304MHz HC49/US
ABLS-27.000MHZ-B4-F-T Abracon LLC ABLS MHz Crystal 27MHz HC49/US
ABLS-4.9152MHZ-B4-T Abracon LLC ABLS MHz Crystal 4.9152MHz HC49/US
ABLS-9.216MHZ-B4-T Abracon LLC ABLS MHz Crystal 9.216MHz HC49/US
ABLS-18.432MHZ-B4-T Abracon LLC ABLS MHz Crystal 18.432MHz HC49/US
ABLS-3.6864MHZ-B4-T Abracon LLC ABLS MHz Crystal 3.6864MHz HC49/US
ABLS-20.000MHZ-B4-T Abracon LLC ABLS MHz Crystal 20MHz HC49/US
ABLS-4.500MHZ-B4-T Abracon LLC ABLS MHz Crystal 4.5MHz HC49/US
ABLS-5.000MHZ-B4-T Abracon LLC ABLS MHz Crystal 5MHz HC49/US
ABLS-6.000MHZ-B4-T Abracon LLC ABLS MHz Crystal 6MHz HC49/US
ABLS-6.144MHZ-B4-T Abracon LLC ABLS MHz Crystal 6.144MHz HC49/US
ABLS-13.000MHZ-B4-T Abracon LLC ABLS MHz Crystal 13MHz HC49/US
ABLS-16.384MHZ-B4-T Abracon LLC ABLS MHz Crystal 16.384MHz HC49/US
ABS25-32.768KHZ-T Abracon LLC ABS25 kHz Crystal (Tuning Fork) 32.768kHz 4-SOJ, 5.50mm pitch
ABLS6M-25.000MHZ-D-2Y-T Abracon LLC ABLS6M MHz Crystal 25MHz 2-SMD, Flat Lead
ABLS7M2-16.000MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 16MHz 2-SMD, Flat Lead
ABLS7M2-24.576MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 24.576MHz 2-SMD, Flat Lead
ABS25-32.768KHZ-6-T Abracon LLC ABS25 kHz Crystal (Tuning Fork) 32.768kHz 4-SOJ, 5.50mm pitch
AB26TRQ-32.768KHZ-T Abracon LLC AB26TRQ kHz Crystal (Tuning Fork) 32.768kHz Cylindrical Can, Radial
AB26T-32.768KHZ Abracon LLC AB26T kHz Crystal (Tuning Fork) 32.768kHz Cylindrical Can, Radial
ABLS2-24.000MHZ-D4YF-T Abracon LLC ABLS2 MHz Crystal 24MHz HC49/US
ABLS2-6.000MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 6MHz HC49/US
ABLS2-5.000MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 5MHz HC49/US
ABLS2-9.8304MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 9.8304MHz HC49/US
ABLSG-4.9152MHZ-D2Y-T Abracon LLC ABLSG MHz Crystal 4.9152MHz HC49/US - 3 Lead
ABLS2-4.000MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 4MHz HC49/US
ABLSG-25.000MHZ-D2Y-F-T Abracon LLC ABLSG MHz Crystal 25MHz HC49/US - 3 Lead
ABLS2-18.432MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 18.432MHz HC49/US
ABLS2-32.000MHZ-D4YF-T Abracon LLC ABLS2 MHz Crystal 32MHz HC49/US
ABLS2-3.6864MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 3.6864MHz HC49/US
ABLS2-3.579545MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 3.579545MHz HC49/US
ABLS2-13.000MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 13MHz HC49/US
ABLS2-22.1184MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 22.1184MHz HC49/US
ABLS2-6.144MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 6.144MHz HC49/US
ABLS2-7.3728MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 7.3728MHz HC49/US
ABLS2-8.192MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 8.192MHz HC49/US
ABLS2-20.000MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 20MHz HC49/US
ABLS2-26.000MHZ-D4YF-T Abracon LLC ABLS2 MHz Crystal 26MHz HC49/US
ABLS2-29.4912MHZ-D4YF-T Abracon LLC ABLS2 MHz Crystal 29.4912MHz HC49/US
ABLS2-10.000MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 10MHz HC49/US
ABLS2-11.0592MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 11.0592MHz HC49/US
ABLS2-4.096MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 4.096MHz HC49/US
ABLS2-16.000MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 16MHz HC49/US
ABLS2-16.384MHZ-D4Y-T Abracon LLC ABLS2 MHz Crystal 16.384MHz HC49/US
ABLS2-36.000MHZ-D4YF-T Abracon LLC ABLS2 MHz Crystal 36MHz HC49/US
AB26TRB-32.768KHZ-T Abracon LLC AB26TRB kHz Crystal (Tuning Fork) 32.768kHz Cylindrical Can, Radial
ABLS-4.9152MHZ-B2-T Abracon LLC ABLS MHz Crystal 4.9152MHz HC49/US
ABM8G-12.000MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 12MHz 4-SMD, No Lead
ABLS-24.000MHZ-B2-T Abracon LLC ABLS MHz Crystal 24MHz HC49/US
ABLS-11.0592MHZ-B2-T Abracon LLC ABLS MHz Crystal 11.0592MHz HC49/US
ABLS-3.6864MHZ-B2-T Abracon LLC ABLS MHz Crystal 3.6864MHz HC49/US
ABLS-14.7456MHZ-B2-T Abracon LLC ABLS MHz Crystal 14.7456MHz HC49/US
ABLS-14.31818MHZ-B2-T Abracon LLC ABLS MHz Crystal 14.31818MHz HC49/US
ABLS-27.000MHZ-B2F-T Abracon LLC ABLS MHz Crystal 27MHz HC49/US
ABLS-22.1184MHZ-B2-T Abracon LLC ABLS MHz Crystal 22.1184MHz HC49/US
ABLS-24.576MHZ-B2F-T Abracon LLC ABLS MHz Crystal 24.576MHz HC49/US
ABLS-8.192MHZ-B2-T Abracon LLC ABLS MHz Crystal 8.192MHz HC49/US
ABM8-24.000MHZ-D2-T Abracon LLC ABM8 MHz Crystal 24MHz 4-SMD, No Lead
ABM10-167-12.000MHZ-T3 Abracon LLC ABM10 MHz Crystal 12MHz 4-SMD, No Lead
ABM10-166-12.000MHZ-T3 Abracon LLC ABM10 MHz Crystal 12MHz 4-SMD, No Lead
ABM3B-8.000MHZ-B2-T Abracon LLC ABM3B MHz Crystal 8MHz 4-SMD, No Lead
ABS07-32.768KHZ-T Abracon LLC ABS07 kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABLS-3.579545MHZ-D-4-T Abracon LLC ABLS MHz Crystal 3.579545MHz HC49/US
ABM11-140-26.000MHZ-T3 Abracon LLC ABM11 MHz Crystal 26MHz 4-SMD, No Lead
ABM11-141-26.000MHZ-T3 Abracon LLC ABM11 MHz Crystal 26MHz 4-SMD, No Lead
ABM11-143-27.120MHZ-T3 Abracon LLC ABM11 MHz Crystal 27.12MHz 4-SMD, No Lead
ABM8-25.000MHZ-B2-T Abracon LLC ABM8 MHz Crystal 25MHz 4-SMD, No Lead
ABLS3-8.000MHZ-D4Y-T Abracon LLC ABLS3 MHz Crystal 8MHz HC49/US
ABLS3-16.000MHZ-D4Y-T Abracon LLC ABLS3 MHz Crystal 16MHz HC49/US
ABLS3-3.6864MHZ-D4Y-T Abracon LLC ABLS3 MHz Crystal 3.6864MHz HC49/US
ABLS3-15.000MHZ-D4Y-T Abracon LLC ABLS3 MHz Crystal 15MHz HC49/US
ABLS3-4.9152MHZ-D4Y-T Abracon LLC ABLS3 MHz Crystal 4.9152MHz HC49/US
ABLS3-9.8304MHZ-D4Y-T Abracon LLC ABLS3 MHz Crystal 9.8304MHz HC49/US
ABLS3-4.000MHZ-D4Y-T Abracon LLC ABLS3 MHz Crystal 4MHz HC49/US
ABLS3-4.096MHZ-D4Y-T Abracon LLC ABLS3 MHz Crystal 4.096MHz HC49/US
ABLS3-6.000MHZ-D4Y-T Abracon LLC ABLS3 MHz Crystal 6MHz HC49/US
ABS25-32.768KHZ-1-T Abracon LLC ABS25 kHz Crystal (Tuning Fork) 32.768kHz 4-SOJ, 5.50mm pitch
需要什么样的抖动性能?时序抖动是衡量时钟信号纯度的一种方式。越低抖动,噪音越小。因为振荡器通常用作本地振荡器系统的“心跳”,干净和低抖动的输出是可取的。 抖动可以在示波器的时域中测量,例如周期抖动和逐周期抖动—或在频域中 相位噪声分析仪,均方根相位抖动在一个频带内积分,例如12千赫到20兆赫,
小于250 fs-RMS的低相位抖动XO对于更高性能至关重要 因为高水平的时钟抖动会导致不可接受的高 误码率(BER)、丢失的通信量或系统通信的丢失。因此,从抖动较低的时钟源开始总是更安全,以便提供更多抖动余量。在理想情况下,由驱动的应用程序或芯片组 振荡器将提供最大允许抖动规格 伴随的积分频带、相位噪声屏蔽和杂散要求。主要考虑的是需要多大的抖动余量振荡器允许来自缓冲器或更远的其它芯片的任何附加抖动 在时序路径的下游,另一个考虑是,一些XO数据手册只宣传“典型” 抖动规格。它不能保证器件在整个过程中的性能, 电压、温度和频率变化。 通常,硬件设计师不会有一套全面的 系统所有关键元件的抖动要求。参考设计 在这种情况下是有帮助的,因为用于设计的振荡器已经 审查过了。
与能提供多种多样产品的供应商合作也是有帮助的 具有不同抖动和成本选项的振荡器以及在线工具可提供帮助 你决定最适合的。同样,当有疑问时,开始总是更安全 低抖动振荡器,然后评估松弛抖动选项作为 降低成本的潜在未来途径。

ABS25-32.768KHZ-6-1-T Abracon LLC ABS25 kHz Crystal (Tuning Fork) 32.768kHz 4-SOJ, 5.50mm pitch
ABM3B-12.000MHZ-B2-T Abracon LLC ABM3B MHz Crystal 12MHz 4-SMD, No Lead
ABM3-8.000MHZ-D2Y-T Abracon LLC ABM3 MHz Crystal 8MHz 2-SMD, No Lead
ABM3B-25.000MHZ-B2-T Abracon LLC ABM3B MHz Crystal 25MHz 4-SMD, No Lead
ABM3-20.000MHZ-B2-T Abracon LLC ABM3 MHz Crystal 20MHz 2-SMD, No Lead
ABM3-13.560MHZ-B2-T Abracon LLC ABM3 MHz Crystal 13.56MHz 2-SMD, No Lead
ABM3-25.000MHZ-B2-T Abracon LLC ABM3 MHz Crystal 25MHz 2-SMD, No Lead
ABM3-12.000MHZ-B2-T Abracon LLC ABM3 MHz Crystal 12MHz 2-SMD, No Lead
ABM3B-20.000MHZ-B2-T Abracon LLC ABM3B MHz Crystal 20MHz 4-SMD, No Lead
ABS07-120-32.768KHZ-T Abracon LLC ABS07 kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABS07AIG-32.768KHZ-9-D-T Abracon LLC ABS07AIG kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABS07AIG-32.768KHZ-D-T Abracon LLC ABS07AIG kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABS07AIG-32.768KHZ-7-D-T Abracon LLC ABS07AIG kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABM8G-12.000MHZ-B4Y-T Abracon LLC ABM8G MHz Crystal 12MHz 4-SMD, No Lead
ABS07-32.768KHZ-7-T Abracon LLC ABS07 kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABS07-32.768KHZ-9-T Abracon LLC ABS07 kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABS13-32.768KHZ-T Abracon LLC ABS13 kHz Crystal (Tuning Fork) 32.768kHz 4-SMD, Flat Lead, 3 Leads
ABL-8.000MHZ-B2 Abracon LLC ABL MHz Crystal 8MHz HC49/US
ABM8-25.000MHZ-10-D1G-T Abracon LLC ABM8 MHz Crystal 25MHz 4-SMD, No Lead
ABS07-32.768KHZ-7-1-T Abracon LLC ABS07 kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABM3B-8.000MHZ-10-1-U-T Abracon LLC ABM3B MHz Crystal 8MHz 4-SMD, No Lead
ABM3-25.000MHZ-D2Y-T Abracon LLC ABM3 MHz Crystal 25MHz 2-SMD, No Lead
ABM3B-16.000MHZ-10-1-U-T Abracon LLC ABM3B MHz Crystal 16MHz 4-SMD, No Lead
ABM3-24.000MHZ-D2Y-T Abracon LLC ABM3 MHz Crystal 24MHz 2-SMD, No Lead
ABM3B-16.000MHZ-B2-T Abracon LLC ABM3B MHz Crystal 16MHz 4-SMD, No Lead
ABM3C-12.000MHZ-D4Y-T Abracon LLC ABM3C MHz Crystal 12MHz 4-SMD, No Lead
ABM8G-25.000MHZ-B4Y-T Abracon LLC ABM8G MHz Crystal 25MHz 4-SMD, No Lead
ABM2-8.000MHZ-D4Y-T Abracon LLC ABM2 MHz Crystal 8MHz 2-SMD, No Lead
ABM3-12.000MHZ-D2Y-T Abracon LLC ABM3 MHz Crystal 12MHz 2-SMD, No Lead
ABM3-16.000MHZ-B2-T Abracon LLC ABM3 MHz Crystal 16MHz 2-SMD, No Lead
ABLSG-4.000MHZ-D2Y-T Abracon LLC ABLSG MHz Crystal 4MHz HC49/US - 3 Lead
ABLSG-12.000MHZ-D2Y-T Abracon LLC ABLSG MHz Crystal 12MHz HC49/US - 3 Lead
ABLS-13.560MHZ-10-R20-D-T Abracon LLC ABLS(RF) MHz Crystal 13.56MHz HC49/US
ABM8AIG-10.000MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 10MHz 4-SMD, No Lead
ABM8AIG-12.000MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 12MHz 4-SMD, No Lead
ABLSG-8.000MHZ-D2Y-T Abracon LLC ABLSG MHz Crystal 8MHz HC49/US - 3 Lead
ABM8G-24.000MHZ-B4Y-T Abracon LLC ABM8G MHz Crystal 24MHz 4-SMD, No Lead
ABLSG-10.000MHZ-D2Y-T Abracon LLC ABLSG MHz Crystal 10MHz HC49/US - 3 Lead
ABLSG-3.6864MHZ-D2Y-T Abracon LLC ABLSG MHz Crystal 3.6864MHz HC49/US - 3 Lead
ABM8AIG-13.000MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 13MHz 4-SMD, No Lead
ABM8AIG-13.560MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 13.56MHz 4-SMD, No Lead
ABM8AIG-14.7456MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 14.7456MHz 4-SMD, No Lead
ABM8AIG-16.384MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 16.384MHz 4-SMD, No Lead
ABM8AIG-22.1184MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 22.1184MHz 4-SMD, No Lead
ABM8AIG-24.000MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 24MHz 4-SMD, No Lead
ABM8AIG-25.000MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 25MHz 4-SMD, No Lead
ABM8AIG-26.000MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 26MHz 4-SMD, No Lead
ABM8AIG-27.000MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 27MHz 4-SMD, No Lead
ABM8AIG-28.63636MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 28.63636MHz 4-SMD, No Lead
ABM8AIG-30.000MHZ-12-2Z-T3 Abracon LLC ABM8AIG MHz Crystal 30MHz 4-SMD, No Lead
ABLSG-3.579545MHZ-D2Y-T Abracon LLC ABLSG MHz Crystal 3.579545MHz HC49/US - 3 Lead
ABLSG-4.433619MHZ-D2Y-T Abracon LLC ABLSG MHz Crystal 4.433619MHz HC49/US - 3 Lead
ABLSG-6.144MHZ-D2Y-T Abracon LLC ABLSG MHz Crystal 6.144MHz HC49/US - 3 Lead
ABLSG-7.3728MHZ-D2Y-T Abracon LLC ABLSG MHz Crystal 7.3728MHz HC49/US - 3 Lead
ABLSG-14.7456MHZ-D2Y-T Abracon LLC ABLSG MHz Crystal 14.7456MHz HC49/US - 3 Lead
ABM7-8.000MHZ-D2Y-T Abracon LLC ABM7 MHz Crystal 8MHz 2-SMD, No Lead
ABM7-25.000MHZ-D2Y-T Abracon LLC ABM7 MHz Crystal 25MHz 2-SMD, No Lead
ABM8G-16.000MHZ-18-D2Y-T Abracon LLC ABM8G MHz Crystal 16MHz 4-SMD, No Lead
ABM8G-25.000MHZ-18-D2Y-T Abracon LLC ABM8G MHz Crystal 25MHz 4-SMD, No Lead
ABM8G-24.000MHZ-18-D2Y-T Abracon LLC ABM8G MHz Crystal 24MHz 4-SMD, No Lead
ABM8G-12.000MHZ-18-D2Y-T Abracon LLC ABM8G MHz Crystal 12MHz 4-SMD, No Lead
ABM3B-10.000MHZ-10-1-U-T Abracon LLC ABM3B MHz Crystal 10MHz 4-SMD, No Lead
ABM3-10.0000MHZ-D2Y-T Abracon LLC ABM3 MHz Crystal 10MHz 2-SMD, No Lead
ABM3B-20.000MHZ-10-1-U-T Abracon LLC ABM3B MHz Crystal 20MHz 4-SMD, No Lead
ABM8G-16.000MHZ-B4Y-T Abracon LLC ABM8G MHz Crystal 16MHz 4-SMD, No Lead
ABM3B-24.000MHZ-10-1-U-T Abracon LLC ABM3B MHz Crystal 24MHz 4-SMD, No Lead
ABM3C-25.000MHZ-D4Y-T Abracon LLC ABM3C MHz Crystal 25MHz 4-SMD, No Lead
ABM2-25.000MHZ-D4Y-T Abracon LLC ABM2 MHz Crystal 25MHz 2-SMD, No Lead
ABM2-12.000MHZ-D4Y-T Abracon LLC ABM2 MHz Crystal 12MHz 2-SMD, No Lead
ABM3-16.000MHZ-D2Y-T Abracon LLC ABM3 MHz Crystal 16MHz 2-SMD, No Lead
ABS07AIG-32.768KHZ-9-T Abracon LLC ABS07AIG kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABS07AIG-32.768KHZ-7-T Abracon LLC ABS07AIG kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABM3B-24.000MHZ-B4Y-T Abracon LLC ABM3B MHz Crystal 24MHz 4-SMD, No Lead
ABLS-12.288MHZ-B4-T Abracon LLC ABLS MHz Crystal 12.288MHz HC49/US
ABLS-13.500MHZ-B4-T Abracon LLC ABLS MHz Crystal 13.5MHz HC49/US
ABLS-3.579545MHZ-B4-T Abracon LLC ABLS MHz Crystal 3.579545MHz HC49/US
ABLS-24.576MHZ-B4-F-T Abracon LLC ABLS MHz Crystal 24.576MHz HC49/US
ABLS-4.433619MHZ-B4-T Abracon LLC ABLS MHz Crystal 4.433619MHz HC49/US
ABLS-10.240MHZ-B4-T Abracon LLC ABLS MHz Crystal 10.24MHz HC49/US
ABLS-15.360MHZ-B4-T Abracon LLC ABLS MHz Crystal 15.36MHz HC49/US
ABLS-6.7458MHZ-B4-T Abracon LLC ABLS MHz Crystal 6.7458MHz HC49/US
ABLS-30.000MHZ-B4-F-T Abracon LLC ABLS MHz Crystal 30MHz HC49/US
ABLS-32.000MHZ-B4-F-T Abracon LLC ABLS MHz Crystal 32MHz HC49/US
ABLS-4.194304MHZ-B4-T Abracon LLC ABLS MHz Crystal 4.194304MHz HC49/US
ABLS-14.31818MHZ-B4-T Abracon LLC ABLS MHz Crystal 14.31818MHz HC49/US
ABLS-24.000MHZ-B4-T Abracon LLC ABLS MHz Crystal 24MHz HC49/US
ABS06-107-32.768KHZ-T Abracon LLC ABS06 kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABM8G-26.000MHZ-18-D2Y-T Abracon LLC ABM8G MHz Crystal 26MHz 4-SMD, No Lead
ABM2-13.000MHZ-D4Y-T Abracon LLC ABM2 MHz Crystal 13MHz 2-SMD, No Lead
ABM8G-14.7456MHZ-18-D2Y-T Abracon LLC ABM8G MHz Crystal 14.7456MHz 4-SMD, No Lead
ABM3C-32.000MHZ-D4Y-T Abracon LLC ABM3C MHz Crystal 32MHz 4-SMD, No Lead
ABLS-10.000MHZ-K4T Abracon LLC ABLS MHz Crystal 10MHz HC49/US
ABM8G-20.000MHZ-18-D2Y-T Abracon LLC ABM8G MHz Crystal 20MHz 4-SMD, No Lead
你的频率会变吗?许多振荡器应用只需要单一的固定频率,如156.25 兆赫。在其他情况下,振荡器提供的频率可能需要 改变。例如,12G-SDI视频成帧器可能需要在 297MHz和297/1.001 MHz两种不同的视频帧速率。在其他时候,可能需要有意增加一个小频率偏差作为余量测试的一部分,对系统级设置进行压力测试 等待时间。也许最常见的是,设计师可能还不知道确切的,最终设计将使用哪个频率,但他们知道他们需要一个振荡器提供这种参考
对于此类应用,理想的解决方案是一个振荡器, 预存频率。双通道和四通道振荡器可用于这些应用程序。这些器件的输出频率可通过引脚选择,从而实现 一个XO代替多个振荡器和一个多路复用器。如果应用需要整数时钟和小数时钟的混合,选择能够提供一致性能的器件 所有目标频率下的低抖动操作。 另一种有用的振荡器是I2C可编程振荡器。这些设备 提供最大的频率灵活性,提供一致的低抖动操作 在很宽的频率范围内。这些设备可以在飞行中重新编程 以提供几乎无限数量的频率
它们对于原型制作和数字PLL架构中的使用也非常有用, 其中主处理器提供快速数字反馈机制 锁定并跟踪参考信号的XO。

ABM3C-24.000MHZ-D4Y-T Abracon LLC ABM3C MHz Crystal 24MHz 4-SMD, No Lead
ABLS-13.52127MHZ-10-J-4Q-T Abracon LLC ABLS MHz Crystal 13.52127MHz HC49/US
ABM2-11.0592MHZ-D4Y-T Abracon LLC ABM2 MHz Crystal 11.0592MHz 2-SMD, No Lead
ABM2-14.31818MHZ-D4Y-T Abracon LLC ABM2 MHz Crystal 14.31818MHz 2-SMD, No Lead
ABM2-24.000MHZ-D4Y-T Abracon LLC ABM2 MHz Crystal 24MHz 2-SMD, No Lead
ABM2-26.000MHZ-D4Y-T Abracon LLC ABM2 MHz Crystal 26MHz 2-SMD, No Lead
ABM3C-27.000MHZ-D4Y-T Abracon LLC ABM3C MHz Crystal 27MHz 4-SMD, No Lead
ABS07AIG-32.768KHZ-6-T Abracon LLC ABS07AIG kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABM7-14.7456MHZ-D2Y-T Abracon LLC ABM7 MHz Crystal 14.7456MHz 2-SMD, No Lead
ABM7-12.000MHZ-D2Y-T Abracon LLC ABM7 MHz Crystal 12MHz 2-SMD, No Lead
ABM7-20.000MHZ-D2Y-T Abracon LLC ABM7 MHz Crystal 20MHz 2-SMD, No Lead
ABM7-16.000MHZ-D2Y-T Abracon LLC ABM7 MHz Crystal 16MHz 2-SMD, No Lead
ABM3B-18.432MHZ-B2-T Abracon LLC ABM3B MHz Crystal 18.432MHz 4-SMD, No Lead
ABLS-8.000MHZ-K4T Abracon LLC ABLS MHz Crystal 8MHz HC49/US
ABM3-18.432MHZ-B2-T Abracon LLC ABM3 MHz Crystal 18.432MHz 2-SMD, No Lead
ABM7-24.000MHZ-D2Y-T Abracon LLC ABM7 MHz Crystal 24MHz 2-SMD, No Lead
ABM3-24.000MHZ-B2-T Abracon LLC ABM3 MHz Crystal 24MHz 2-SMD, No Lead
ABM3-29.4912MHZ-B2-T Abracon LLC ABM3 MHz Crystal 29.4912MHz 2-SMD, No Lead
ABM3B-24.000MHZ-R60-D-1-W-T Abracon LLC ABM3B MHz Crystal 24MHz 4-SMD, No Lead
ABS07AIG-32.768KHZ-9-1-T Abracon LLC ABS07AIG kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABS07AIG-32.768KHZ-7-1-T Abracon LLC ABS07AIG kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABM10AIG-24.000MHZ-4Z-T3 Abracon LLC ABM10AIG MHz Crystal 24MHz 4-SMD, No Lead
ABM10AIG-25.000MHZ-4Z-T3 Abracon LLC ABM10AIG MHz Crystal 25MHz 4-SMD, No Lead
ABM10AIG-27.000MHZ-4Z-T3 Abracon LLC ABM10AIG MHz Crystal 27MHz 4-SMD, No Lead
ABM10AIG-32.000MHZ-4Z-T3 Abracon LLC ABM10AIG MHz Crystal 32MHz 4-SMD, No Lead
ABM3-18.432MHZ-D2Y-T Abracon LLC ABM3 MHz Crystal 18.432MHz 2-SMD, No Lead
ABS06-32.768KHZ-T Abracon LLC ABS06 kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABLS7M-12.000MHZ-B-2-T Abracon LLC ABLS7M MHz Crystal 12MHz 2-SMD, Flat Lead
ABLS7M-16.000MHZ-B-2-T Abracon LLC ABLS7M MHz Crystal 16MHz 2-SMD, Flat Lead
ABM3B-155-12.800MHZ-T Abracon LLC ABM3B MHz Crystal 12.8MHz 4-SMD, No Lead
ABM10-16.000MHZ-E20-T Abracon LLC ABM10 MHz Crystal 16MHz 4-SMD, No Lead
ABMM-7.3728MHZ-B2-T Abracon LLC ABMM MHz Crystal 7.3728MHz 4-SMD, No Lead
ABM8-24.000MHZ-B2-T Abracon LLC ABM8 MHz Crystal 24MHz 4-SMD, No Lead
ABM8-16.000MHZ-B2-T Abracon LLC ABM8 MHz Crystal 16MHz 4-SMD, No Lead
ABMM-6.000MHZ-B2-T Abracon LLC ABMM MHz Crystal 6MHz 4-SMD, No Lead
ABMM-8.000MHZ-B2-T Abracon LLC ABMM MHz Crystal 8MHz 4-SMD, No Lead
ABM8-33.000MHZ-B2-T Abracon LLC ABM8 MHz Crystal 33MHz 4-SMD, No Lead
ABLS-4.897MHZ-20-R70-D-T Abracon LLC ABLS(RF) MHz Crystal 4.897MHz HC49/US
ABM8-28.63636MHZ-B2-T Abracon LLC ABM8 MHz Crystal 28.63636MHz 4-SMD, No Lead
ABM8-48.000MHZ-B2-T Abracon LLC ABM8 MHz Crystal 48MHz 4-SMD, No Lead
ABM8-27.000MHZ-B2-T Abracon LLC ABM8 MHz Crystal 27MHz 4-SMD, No Lead
ABM8-20.000MHZ-B2-T Abracon LLC ABM8 MHz Crystal 20MHz 4-SMD, No Lead
ABM8-30.000MHZ-B2-T Abracon LLC ABM8 MHz Crystal 30MHz 4-SMD, No Lead
ABM10-24.000MHZ-E20-T Abracon LLC ABM10 MHz Crystal 24MHz 4-SMD, No Lead
ABM8-13.000MHZ-B2-T Abracon LLC ABM8 MHz Crystal 13MHz 4-SMD, No Lead
ABM8-27.120MHZ-B4-T Abracon LLC ABM8 MHz Crystal 27.12MHz 4-SMD, No Lead
ABM8-22.1184MHZ-B2-T Abracon LLC ABM8 MHz Crystal 22.1184MHz 4-SMD, No Lead
ABM8-28.375MHZ-B2-T Abracon LLC ABM8 MHz Crystal 28.375MHz 4-SMD, No Lead
ABM3B-24.000MHZ-D-1-W-T Abracon LLC ABM3B MHz Crystal 24MHz 4-SMD, No Lead
ABM8G-25.000MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 25MHz 4-SMD, No Lead
ABM8G-16.384MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 16.384MHz 4-SMD, No Lead
ABM8G-12.288MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 12.288MHz 4-SMD, No Lead
ABM8G-16.000MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 16MHz 4-SMD, No Lead
ABM8G-24.576MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 24.576MHz 4-SMD, No Lead
ABM8G-13.000MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 13MHz 4-SMD, No Lead
ABM8G-18.432MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 18.432MHz 4-SMD, No Lead
ABM8G-19.6608MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 19.6608MHz 4-SMD, No Lead
ABM8G-24.000MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 24MHz 4-SMD, No Lead
ABM8G-26.000MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 26MHz 4-SMD, No Lead
ABM8G-28.63636MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 28.63636MHz 4-SMD, No Lead
ABM8G-30.000MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 30MHz 4-SMD, No Lead
ABM8G-33.000MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 33MHz 4-SMD, No Lead
ABM8G-40.000MHZ-4Y-T3 Abracon LLC ABM8G MHz Crystal 40MHz 4-SMD, No Lead
ABS07AIG-32.768KHZ-6-1-T Abracon LLC ABS07AIG kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABM11AIG-24.000MHZ-4Z-T3 Abracon LLC ABM11AIG MHz Crystal 24MHz 4-SMD, No Lead
ABM11AIG-40.000MHZ-4Z-T3 Abracon LLC ABM11AIG MHz Crystal 40MHz 4-SMD, No Lead
ABM3B-27.120MHZ-10-D1G-T Abracon LLC ABM3B MHz Crystal 27.12MHz 4-SMD, No Lead
ABLS7M2-13.500MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 13.5MHz 2-SMD, Flat Lead
ABLS7M2-12.288MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 12.288MHz 2-SMD, Flat Lead
ABLS7M2-27.000MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 27MHz 2-SMD, Flat Lead
ABLS7M2-25.000MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 25MHz 2-SMD, Flat Lead
ABLS6M-27.000MHZ-D-2Y-T Abracon LLC ABLS6M MHz Crystal 27MHz 2-SMD, Flat Lead
ABLS6M-26.000MHZ-D-2Y-T Abracon LLC ABLS6M MHz Crystal 26MHz 2-SMD, Flat Lead
ABLS7M2-20.500MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 20.5MHz 2-SMD, Flat Lead
ABLS7M2-26.000MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 26MHz 2-SMD, Flat Lead
ABLS7M2-18.432MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 18.432MHz 2-SMD, Flat Lead
ABLS7M2-13.560MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 13.56MHz 2-SMD, Flat Lead
ABLS2-25.000MHZ-2X-FT Abracon LLC ABLS2 MHz Crystal 25MHz HC49/US
ABLS7M2-20.000MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 20MHz 2-SMD, Flat Lead
ABLS7M2-14.31818MHZ-D-2Y-T Abracon LLC ABLS7M2 MHz Crystal 14.31818MHz 2-SMD, Flat Lead
ABM7-16.000MHZ-4-T Abracon LLC ABM7 MHz Crystal 16MHz 2-SMD, No Lead
ABM3B-12.000MHZ-12-B4H-T Abracon LLC ABM3B MHz Crystal 12MHz 4-SMD, No Lead
ABM7-14.7456MHZ-B4-T Abracon LLC ABM7 MHz Crystal 14.7456MHz 2-SMD, No Lead
ABLS-4.000MHZ-K4T Abracon LLC ABLS MHz Crystal 4MHz HC49/US
ABLS-6.000MHZ-K4T Abracon LLC ABLS MHz Crystal 6MHz HC49/US
ABLS-12.000MHZ-K4T Abracon LLC ABLS MHz Crystal 12MHz HC49/US
ABLS-12.288MHZ-K4T Abracon LLC ABLS MHz Crystal 12.288MHz HC49/US
ABS06-32.768KHZ-1-T Abracon LLC ABS06 kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABMM-25.000MHZ-B2-T Abracon LLC ABMM MHz Crystal 25MHz 4-SMD, No Lead
ABMM-16.000MHZ-B2-T Abracon LLC ABMM MHz Crystal 16MHz 4-SMD, No Lead
ABMM-12.000MHZ-B2-T Abracon LLC ABMM MHz Crystal 12MHz 4-SMD, No Lead
ABM3B-27.120MHZ-10-D2H-T Abracon LLC ABM3B MHz Crystal 27.12MHz 4-SMD, No Lead
ABS07-32.768KHZ-9-1-T Abracon LLC ABS07 kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
ABMM-14.7456MHZ-B2-T Abracon LLC ABMM MHz Crystal 14.7456MHz 4-SMD, No Lead
ABLS-13.02519MHZ-10-K4Q-T Abracon LLC ABLS MHz Crystal 13.02519MHz HC49/US
ABLS-3.579545MHZ-L4Q-T Abracon LLC ABLS MHz Crystal 3.579545MHz HC49/US
ABLS-9.8304MHZ-L4Q-T Abracon LLC ABLS MHz Crystal 9.8304MHz HC49/US
ABLS-20.000MHZ-L4Q-T Abracon LLC ABLS MHz Crystal 20MHz HC49/US
ABLS-13.0625MHZ-10-K4Q-T Abracon LLC ABLS MHz Crystal 13.0625MHz HC49/US
ABLS-12.000MHZ-L4Q-T Abracon LLC ABLS MHz Crystal 12MHz HC49/US
频率稳定性有多重要?频率稳定性是衡量振荡器的输出频率由于温度的变化,在操作过程中可能会发生变化。如果频率漂移超出应用预期,时序误差可能发生。频率稳定性用百万分率或ppm表示,相对于特定温度范围内的标称频率。
振荡器使用在制造过程中以不同角度切割的石英晶体 产生不同的温度反应。普通XO温度稳定性 等级包括20 ppm、50 ppm和100 ppm。较低的ppm意味着 在给定温度范围内,输出频率更加稳定。
值得注意的是,频率稳定性只是知道如何做到的一个方面 振荡器的频率可能会改变很多。完整测量潜在的频率偏差称为总稳定性,它是整个温度范围内的频率稳定性、25°C时的初始精度和 指定的时间和温度,总稳定性揭示了最坏情况-振荡器可能产生的频率超过其 工作寿命。
XO在整个温度范围内可能具有出色的频率稳定性,但这 测量仅与室内提供的标称频率相关 温度。因此,对于某些器件来说,初始精度误差可能相当大,例如SAW振荡器,并且必须加以考虑。 同样,石英晶体会在很长一段时间内慢慢老化,从而导致 输出频率缓慢漂移。一些振荡器供应商规定了老化时间 在25°C下只能存放一年,而更保守的供应商规定存放时间为10年 在更高的温度下工作数年,为长期运营。老化条件会对的总稳定性产生重大影响振荡器,有时可以进行比较难。当有疑问时,使用有保证的定时装置更安全 更严格条件下的规格,以提供更多的设计余量。
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此文关键字: 晶体振荡器
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