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更多>>如何選擇合適的振蕩器四個(gè)關(guān)鍵問(wèn)題有助于滿足設(shè)計(jì)要求
來(lái)源：http://www.ollopemedia.com 作者：zlh 2022年05月12
晶體振蕩器通常是設(shè)計(jì)師最后考慮的元件之一，但是錯(cuò)誤的部分可以很快扼殺一個(gè)設(shè)計(jì)。此外，搜索通過(guò)各種可用的振蕩器和它們的能力令人困惑。有四個(gè)關(guān)鍵問(wèn)題你應(yīng)該問(wèn)自己選擇振蕩器。您找到的答案將有助于確保您的滿足設(shè)計(jì)要求。
你需要晶體還是振蕩器？雖然它們可能看起來(lái)完全相同，并且共享許多規(guī)格、晶體和振蕩器是非常不同的設(shè)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(méi)有包含驅(qū)動(dòng)石英產(chǎn)生時(shí)鐘輸出的振蕩器電路。相反，驅(qū)動(dòng)電路位于晶體所在的器件內(nèi)部已連接。
相比之下，晶體振蕩器(XO)是一個(gè)完整的器件，包含石英晶體、振蕩器電路、輸出驅(qū)動(dòng)器和潛在的鎖相環(huán)路(PLL)。XO提供特定頻率和信號(hào)的時(shí)鐘輸出格式，如CMOS、LVDS差分晶振和LVPECL。可以直接驅(qū)動(dòng)芯片或通過(guò)緩沖區(qū)提供特定頻率。振蕩器是一個(gè)完整的單輸出時(shí)鐘發(fā)生器。大多數(shù)消費(fèi)電子和電池供電應(yīng)用使用片上系統(tǒng)(SoC) 集成振蕩器電路和簡(jiǎn)單、低成本晶體的器件時(shí)鐘合成。針對(duì)高端應(yīng)用—數(shù)據(jù)中心、電信、工業(yè) 自動(dòng)化等。—外部XO通常用于提供參考時(shí)序用于SoC的內(nèi)部PLL。
使用片外時(shí)鐘源非常有利，因?yàn)樗峁┝霜?dú)立、隔離的參考時(shí)鐘經(jīng)過(guò)優(yōu)化，可提供低抖動(dòng)操作串?dāng)_最小。另一個(gè)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(jí)的影響時(shí)鐘抖動(dòng)噪聲。
需要什么樣的抖動(dòng)性能？時(shí)序抖動(dòng)是衡量時(shí)鐘信號(hào)純度的一種方式。越低抖動(dòng)，噪音越小。因?yàn)檎袷幤魍ǔＳ米鞅镜卣袷幤飨到y(tǒng)的“心跳”,干凈和低抖動(dòng)的輸出是可取的。 抖動(dòng)可以在示波器的時(shí)域中測(cè)量，例如周期抖動(dòng)和逐周期抖動(dòng)—或在頻域中 相位噪聲分析儀，均方根相位抖動(dòng)在一個(gè)頻帶內(nèi)積分，例如12千赫到20兆赫，
小于250 fs-RMS的低相位抖動(dòng)XO對(duì)于更高性能至關(guān)重要 因?yàn)楦咚降臅r(shí)鐘抖動(dòng)會(huì)導(dǎo)致不可接受的高 誤碼率(BER)、丟失的通信量或系統(tǒng)通信的丟失。因此，從抖動(dòng)較低的時(shí)鐘源開(kāi)始總是更安全，以便提供更多抖動(dòng)余量。在理想情況下，由驅(qū)動(dòng)的應(yīng)用程序或芯片組 振蕩器將提供最大允許抖動(dòng)規(guī)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(dòng)余量振蕩器允許來(lái)自緩沖器或更遠(yuǎn)的其它芯片的任何附加抖動(dòng) 在時(shí)序路徑的下游，另一個(gè)考慮是，一些XO數(shù)據(jù)手冊(cè)只宣傳“典型” 抖動(dòng)規(guī)格。它不能保證器件在整個(gè)過(guò)程中的性能， 電壓、溫度和頻率變化。 通常，硬件設(shè)計(jì)師不會(huì)有一套全面的 系統(tǒng)所有關(guān)鍵元件的抖動(dòng)要求。參考設(shè)計(jì) 在這種情況下是有幫助的，因?yàn)橛糜谠O(shè)計(jì)的振蕩器已經(jīng) 審查過(guò)了。
與能提供多種多樣產(chǎn)品的供應(yīng)商合作也是有幫助的 具有不同抖動(dòng)和成本選項(xiàng)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(dāng)有疑問(wèn)時(shí)，開(kāi)始總是更安全 低抖動(dòng)振蕩器，然后評(píng)估松弛抖動(dòng)選項(xiàng)作為 降低成本的潛在未來(lái)途徑。
你的頻率會(huì)變嗎？許多振蕩器應(yīng)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(shí)候，可能需要有意增加一個(gè)小頻率偏差作為余量測(cè)試的一部分，對(duì)系統(tǒng)級(jí)設(shè)置進(jìn)行壓力測(cè)試 等待時(shí)間。也許最常見(jiàn)的是，設(shè)計(jì)師可能還不知道確切的，最終設(shè)計(jì)將使用哪個(gè)頻率，但他們知道他們需要一個(gè)振蕩器提供這種參考
對(duì)于此類(lèi)應(yīng)用，理想的解決方案是一個(gè)振蕩器， 預(yù)存頻率。雙通道和四通道振蕩器可用于這些應(yīng)用程序。這些器件的輸出頻率可通過(guò)引腳選擇，從而實(shí)現(xiàn) 一個(gè)XO代替多個(gè)振蕩器和一個(gè)多路復(fù)用器。如果應(yīng)用需要整數(shù)時(shí)鐘和小數(shù)時(shí)鐘的混合，選擇能夠提供一致性能的器件 所有目標(biāo)頻率下的低抖動(dòng)操作。 另一種有用的振蕩器是I2C可編程振蕩器。這些設(shè)備 提供最大的頻率靈活性，提供一致的低抖動(dòng)操作 在很寬的頻率范圍內(nèi)。這些設(shè)備可以在飛行中重新編程 以提供幾乎無(wú)限數(shù)量的頻率
它們對(duì)于原型制作和數(shù)字PLL架構(gòu)中的使用也非常有用， 其中主處理器提供快速數(shù)字反饋機(jī)制 鎖定并跟蹤參考信號(hào)的XO。
頻率穩(wěn)定性有多重要？頻率穩(wěn)定性是衡量振蕩器的輸出頻率由于溫度的變化，在操作過(guò)程中可能會(huì)發(fā)生變化。如果頻率漂移超出應(yīng)用預(yù)期，時(shí)序誤差可能發(fā)生。頻率穩(wěn)定性用百萬(wàn)分率或ppm表示，相對(duì)于特定溫度范圍內(nèi)的標(biāo)稱(chēng)頻率。
振蕩器使用在制造過(guò)程中以不同角度切割的石英晶體 產(chǎn)生不同的溫度反應(yīng)。普通XO溫度穩(wěn)定性 等級(jí)包括20 ppm、50 ppm和100 ppm。較低的ppm意味著 在給定溫度范圍內(nèi)，輸出頻率更加穩(wěn)定。
值得注意的是，頻率穩(wěn)定性只是知道如何做到的一個(gè)方面 振蕩器的頻率可能會(huì)改變很多。完整測(cè)量潛在的頻率偏差稱(chēng)為總穩(wěn)定性，它是整個(gè)溫度范圍內(nèi)的頻率穩(wěn)定性、25°C時(shí)的初始精度和 指定的時(shí)間和溫度，總穩(wěn)定性揭示了最壞情況-振蕩器可能產(chǎn)生的頻率超過(guò)其 工作壽命。
XO在整個(gè)溫度范圍內(nèi)可能具有出色的頻率穩(wěn)定性，但這 測(cè)量?jī)H與室內(nèi)提供的標(biāo)稱(chēng)頻率相關(guān) 溫度。因此，對(duì)于某些器件來(lái)說(shuō)，初始精度誤差可能相當(dāng)大，例如SAW振蕩器，并且必須加以考慮。 同樣，石英晶體會(huì)在很長(zhǎng)一段時(shí)間內(nèi)慢慢老化，從而導(dǎo)致 輸出頻率緩慢漂移。一些振蕩器供應(yīng)商規(guī)定了老化時(shí)間 在25°C下只能存放一年，而更保守的供應(yīng)商規(guī)定存放時(shí)間為10年 在更高的溫度下工作數(shù)年，為長(zhǎng)期運(yùn)營(yíng)。老化條件會(huì)對(duì)的總穩(wěn)定性產(chǎn)生重大影響振蕩器，有時(shí)可以進(jìn)行比較難。當(dāng)有疑問(wèn)時(shí)，使用有保證的定時(shí)裝置更安全 更嚴(yán)格條件下的規(guī)格，以提供更多的設(shè)計(jì)余量。
你需要晶體還是振蕩器？雖然它們可能看起來(lái)完全相同，并且共享許多規(guī)格、晶體和振蕩器是非常不同的設(shè)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(méi)有包含驅(qū)動(dòng)石英產(chǎn)生時(shí)鐘輸出的振蕩器電路。相反，驅(qū)動(dòng)電路位于晶體所在的器件內(nèi)部已連接。
相比之下，晶體振蕩器(XO)是一個(gè)完整的器件，包含石英晶體、振蕩器電路、輸出驅(qū)動(dòng)器和潛在的鎖相環(huán)路(PLL)。XO提供特定頻率和信號(hào)的時(shí)鐘輸出格式，如CMOS、LVDS差分晶振和LVPECL。可以直接驅(qū)動(dòng)芯片或通過(guò)緩沖區(qū)提供特定頻率。振蕩器是一個(gè)完整的單輸出時(shí)鐘發(fā)生器。大多數(shù)消費(fèi)電子和電池供電應(yīng)用使用片上系統(tǒng)(SoC) 集成振蕩器電路和簡(jiǎn)單、低成本晶體的器件時(shí)鐘合成。針對(duì)高端應(yīng)用—數(shù)據(jù)中心、電信、工業(yè) 自動(dòng)化等。—外部XO通常用于提供參考時(shí)序用于SoC的內(nèi)部PLL。
使用片外時(shí)鐘源非常有利，因?yàn)樗峁┝霜?dú)立、隔離的參考時(shí)鐘經(jīng)過(guò)優(yōu)化，可提供低抖動(dòng)操作串?dāng)_最小。另一個(gè)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(jí)的影響時(shí)鐘抖動(dòng)噪聲。
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Manufacturer Part Number 原廠編碼 |
Manufacturer 廠家 |
Series型號(hào) | 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 |
小于250 fs-RMS的低相位抖動(dòng)XO對(duì)于更高性能至關(guān)重要 因?yàn)楦咚降臅r(shí)鐘抖動(dòng)會(huì)導(dǎo)致不可接受的高 誤碼率(BER)、丟失的通信量或系統(tǒng)通信的丟失。因此，從抖動(dòng)較低的時(shí)鐘源開(kāi)始總是更安全，以便提供更多抖動(dòng)余量。在理想情況下，由驅(qū)動(dòng)的應(yīng)用程序或芯片組 振蕩器將提供最大允許抖動(dòng)規(guī)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(dòng)余量振蕩器允許來(lái)自緩沖器或更遠(yuǎn)的其它芯片的任何附加抖動(dòng) 在時(shí)序路徑的下游，另一個(gè)考慮是，一些XO數(shù)據(jù)手冊(cè)只宣傳“典型” 抖動(dòng)規(guī)格。它不能保證器件在整個(gè)過(guò)程中的性能， 電壓、溫度和頻率變化。 通常，硬件設(shè)計(jì)師不會(huì)有一套全面的 系統(tǒng)所有關(guān)鍵元件的抖動(dòng)要求。參考設(shè)計(jì) 在這種情況下是有幫助的，因?yàn)橛糜谠O(shè)計(jì)的振蕩器已經(jīng) 審查過(guò)了。
與能提供多種多樣產(chǎn)品的供應(yīng)商合作也是有幫助的 具有不同抖動(dòng)和成本選項(xiàng)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(dāng)有疑問(wèn)時(shí)，開(kāi)始總是更安全 低抖動(dòng)振蕩器，然后評(píng)估松弛抖動(dòng)選項(xiàng)作為 降低成本的潛在未來(lái)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 |
| 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 |
對(duì)于此類(lèi)應(yīng)用，理想的解決方案是一個(gè)振蕩器， 預(yù)存頻率。雙通道和四通道振蕩器可用于這些應(yīng)用程序。這些器件的輸出頻率可通過(guò)引腳選擇，從而實(shí)現(xiàn) 一個(gè)XO代替多個(gè)振蕩器和一個(gè)多路復(fù)用器。如果應(yīng)用需要整數(shù)時(shí)鐘和小數(shù)時(shí)鐘的混合，選擇能夠提供一致性能的器件 所有目標(biāo)頻率下的低抖動(dòng)操作。 另一種有用的振蕩器是I2C可編程振蕩器。這些設(shè)備 提供最大的頻率靈活性，提供一致的低抖動(dòng)操作 在很寬的頻率范圍內(nèi)。這些設(shè)備可以在飛行中重新編程 以提供幾乎無(wú)限數(shù)量的頻率
它們對(duì)于原型制作和數(shù)字PLL架構(gòu)中的使用也非常有用， 其中主處理器提供快速數(shù)字反饋機(jī)制 鎖定并跟蹤參考信號(hào)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 |
振蕩器使用在制造過(guò)程中以不同角度切割的石英晶體 產(chǎn)生不同的溫度反應(yīng)。普通XO溫度穩(wěn)定性 等級(jí)包括20 ppm、50 ppm和100 ppm。較低的ppm意味著 在給定溫度范圍內(nèi)，輸出頻率更加穩(wěn)定。
值得注意的是，頻率穩(wěn)定性只是知道如何做到的一個(gè)方面 振蕩器的頻率可能會(huì)改變很多。完整測(cè)量潛在的頻率偏差稱(chēng)為總穩(wěn)定性，它是整個(gè)溫度范圍內(nèi)的頻率穩(wěn)定性、25°C時(shí)的初始精度和 指定的時(shí)間和溫度，總穩(wěn)定性揭示了最壞情況-振蕩器可能產(chǎn)生的頻率超過(guò)其 工作壽命。
XO在整個(gè)溫度范圍內(nèi)可能具有出色的頻率穩(wěn)定性，但這 測(cè)量?jī)H與室內(nèi)提供的標(biāo)稱(chēng)頻率相關(guān) 溫度。因此，對(duì)于某些器件來(lái)說(shuō)，初始精度誤差可能相當(dāng)大，例如SAW振蕩器，并且必須加以考慮。 同樣，石英晶體會(huì)在很長(zhǎng)一段時(shí)間內(nèi)慢慢老化，從而導(dǎo)致 輸出頻率緩慢漂移。一些振蕩器供應(yīng)商規(guī)定了老化時(shí)間 在25°C下只能存放一年，而更保守的供應(yīng)商規(guī)定存放時(shí)間為10年 在更高的溫度下工作數(shù)年，為長(zhǎng)期運(yùn)營(yíng)。老化條件會(huì)對(duì)的總穩(wěn)定性產(chǎn)生重大影響振蕩器，有時(shí)可以進(jìn)行比較難。當(dāng)有疑問(wèn)時(shí)，使用有保證的定時(shí)裝置更安全 更嚴(yán)格條件下的規(guī)格，以提供更多的設(shè)計(jì)余量。
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此文關(guān)鍵字： 晶體振蕩器
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