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          首頁企業博客 如何選擇合適的振蕩器四個關鍵問題有助于滿足設計要求

          如何選擇合適的振蕩器四個關鍵問題有助于滿足設計要求

          來源:http://www.ppcoruna.com 作者:zlh 2022年05月12
          晶體振蕩器通常是設計師最后考慮的元件之一,但是錯誤的部分可以很快扼殺一個設計。此外,搜索通過各種可用的振蕩器和它們的能力令人困惑。有四個關鍵問題你應該問自己選擇振蕩器。您找到的答案將有助于確保您的滿足設計要求。
          你需要晶體還是振蕩器?雖然它們可能看起來完全相同,并且共享許多規格、晶體和振蕩器是非常不同的設備。包裝好的水晶是一塊石英,切割后拋光,以高Q值在特定頻率共振。它沒有包含驅動石英產生時鐘輸出的振蕩器電路。相反,驅動電路位于晶體所在的器件內部已連接。
          相比之下,晶體振蕩器(XO)是一個完整的器件,包含石英晶體、振蕩器電路、輸出驅動器和潛在的鎖相環路(PLL)。XO提供特定頻率和信號的時鐘輸出格式,如CMOS、LVDS差分晶振和LVPECL??梢灾苯域寗有酒蛲ㄟ^緩沖區提供特定頻率。振蕩器是一個完整的單輸出時鐘發生器。大多數消費電子和電池供電應用使用片上系統(SoC) 集成振蕩器電路和簡單、低成本晶體的器件時鐘合成。針對高端應用—數據中心、電信、工業 自動化等。—外部XO通常用于提供參考時序用于SoC的內部PLL。
          使用片外時鐘源非常有利,因為它提供了獨立、隔離的參考時鐘經過優化,可提供低抖動操作串擾最小。另一個顯著的好處是振蕩器整合了集成電源噪聲抑制,最大限度地降低電路板級的影響時鐘抖動噪聲。

          Manufacturer Part Number
          原廠編碼
          Manufacturer
          廠家
          Series型號 Type 系列 Frequency
          頻率
          Package / Case包裝/封裝
          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
          需要什么樣的抖動性能?時序抖動是衡量時鐘信號純度的一種方式。越低抖動,噪音越小。因為振蕩器通常用作本地振蕩器系統的“心跳”,干凈和低抖動的輸出是可取的。 抖動可以在示波器的時域中測量,例如周期抖動和逐周期抖動—或在頻域中 相位噪聲分析儀,均方根相位抖動在一個頻帶內積分,例如12千赫到20兆赫,
          小于250 fs-RMS的低相位抖動XO對于更高性能至關重要 因為高水平的時鐘抖動會導致不可接受的高 誤碼率(BER)、丟失的通信量或系統通信的丟失。因此,從抖動較低的時鐘源開始總是更安全,以便提供更多抖動余量。在理想情況下,由驅動的應用程序或芯片組 振蕩器將提供最大允許抖動規格 伴隨的積分頻帶、相位噪聲屏蔽和雜散要求。主要考慮的是需要多大的抖動余量振蕩器允許來自緩沖器或更遠的其它芯片的任何附加抖動 在時序路徑的下游,另一個考慮是,一些XO數據手冊只宣傳“典型” 抖動規格。它不能保證器件在整個過程中的性能, 電壓、溫度和頻率變化。 通常,硬件設計師不會有一套全面的 系統所有關鍵元件的抖動要求。參考設計 在這種情況下是有幫助的,因為用于設計的振蕩器已經 審查過了。
          與能提供多種多樣產品的供應商合作也是有幫助的 具有不同抖動和成本選項的振蕩器以及在線工具可提供幫助 你決定最適合的。同樣,當有疑問時,開始總是更安全 低抖動振蕩器,然后評估松弛抖動選項作為 降低成本的潛在未來途徑。

          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
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          ABLS-4.433619MHZ-B4-T Abracon LLC ABLS MHz Crystal 4.433619MHz HC49/US
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          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
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          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
          你的頻率會變嗎?許多振蕩器應用只需要單一的固定頻率,如156.25 兆赫。在其他情況下,振蕩器提供的頻率可能需要 改變。例如,12G-SDI視頻成幀器可能需要在 297MHz和297/1.001 MHz兩種不同的視頻幀速率。在其他時候,可能需要有意增加一個小頻率偏差作為余量測試的一部分,對系統級設置進行壓力測試 等待時間。也許最常見的是,設計師可能還不知道確切的,最終設計將使用哪個頻率,但他們知道他們需要一個振蕩器提供這種參考
          對于此類應用,理想的解決方案是一個振蕩器, 預存頻率。雙通道和四通道振蕩器可用于這些應用程序。這些器件的輸出頻率可通過引腳選擇,從而實現 一個XO代替多個振蕩器和一個多路復用器。如果應用需要整數時鐘和小數時鐘的混合,選擇能夠提供一致性能的器件 所有目標頻率下的低抖動操作。 另一種有用的振蕩器是I2C可編程振蕩器。這些設備 提供最大的頻率靈活性,提供一致的低抖動操作 在很寬的頻率范圍內。這些設備可以在飛行中重新編程 以提供幾乎無限數量的頻率
          它們對于原型制作和數字PLL架構中的使用也非常有用, 其中主處理器提供快速數字反饋機制 鎖定并跟蹤參考信號的XO。

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          ABM2-11.0592MHZ-D4Y-T Abracon LLC ABM2 MHz Crystal 11.0592MHz 2-SMD, No Lead
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          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
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          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
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          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
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          ABM8-20.000MHZ-B2-T Abracon LLC ABM8 MHz Crystal 20MHz 4-SMD, No Lead
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          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
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          ABS07AIG-32.768KHZ-6-1-T Abracon LLC ABS07AIG kHz Crystal (Tuning Fork) 32.768kHz 2-SMD, No Lead
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          頻率穩定性有多重要?頻率穩定性是衡量振蕩器的輸出頻率由于溫度的變化,在操作過程中可能會發生變化。如果頻率漂移超出應用預期,時序誤差可能發生。頻率穩定性用百萬分率或ppm表示,相對于特定溫度范圍內的標稱頻率。
          振蕩器使用在制造過程中以不同角度切割的石英晶體 產生不同的溫度反應。普通XO溫度穩定性 等級包括20 ppm、50 ppm和100 ppm。較低的ppm意味著 在給定溫度范圍內,輸出頻率更加穩定。
          值得注意的是,頻率穩定性只是知道如何做到的一個方面 振蕩器的頻率可能會改變很多。完整測量潛在的頻率偏差稱為總穩定性,它是整個溫度范圍內的頻率穩定性、25°C時的初始精度和 指定的時間和溫度,總穩定性揭示了最壞情況-振蕩器可能產生的頻率超過其 工作壽命。
          XO在整個溫度范圍內可能具有出色的頻率穩定性,但這 測量僅與室內提供的標稱頻率相關 溫度。因此,對于某些器件來說,初始精度誤差可能相當大,例如SAW振蕩器,并且必須加以考慮。 同樣,石英晶體會在很長一段時間內慢慢老化,從而導致 輸出頻率緩慢漂移。一些振蕩器供應商規定了老化時間 在25°C下只能存放一年,而更保守的供應商規定存放時間為10年 在更高的溫度下工作數年,為長期運營。老化條件會對的總穩定性產生重大影響振蕩器,有時可以進行比較難。當有疑問時,使用有保證的定時裝置更安全 更嚴格條件下的規格,以提供更多的設計余量。
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