晶振的四个重要参数

时间： 2024-01-20 来源：CREC官网

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晶振的重要参数：一、标称频率；二、频率偏差；三、工作温度；四、负载电容。

一、标称频率：晶体元件规格书中所指定的频率，也是硬件工程师们在电路设计和元件选购时首要关注的参数。不同晶振频率针对不同电路的应用。如果振荡电路需要6.14MHz的晶振,就绝不能选用频率为6.143MHz的晶振，否则会造成整机上电系统瘫痪。

二、频率偏差：频率偏差是相对标称频率的一个偏差范围值，代表着指定工作温度及理想电路工作状态下，晶振实际输出频率与标称频率的偏差程度。通常使用单位ppm来表示标称频率的偏差范围，此值越小表示精度越高，我们常见精度为：±20ppm、±30ppm。如果您需要±20ppm的晶振，务必选择±20ppm，因为达不到这个精度的晶振针对于您的电路板可能不能用。当然，如果您需要的是±30ppm的晶振，就可以选择频率精度值小于±30ppm的晶振。

三、工作温度：晶振具有“温漂”特性，即晶振在工作中会受到外界温度变化的影响。因此就需要适应高低温环境，这就需要考虑晶振的另一重要参数：工作温度。晶振的常见工作温度分为：-20℃至+70℃及-40℃至~+85℃等。值得注意的是不同晶振工作温度范围下，晶振的频率精度也是不同的，一般在选择晶振产品时会同时考虑到工作温度和频率偏差两项核参数。

四、负载电容：晶振的一个非常重要的参数，即负载电容CL（Load capacitance），它是电路中跨接晶体两端的总的有效电容（不是晶振外接的匹配电容），主要影响负载谐振频率和等效负载谐振电阻，与晶体一起决定振荡器电路的工作频率，通过调整负载电容，就可以将振荡器的工作频率微调到标称值。

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本文由雪飘梦飞转载自CREC官网，原文标题为:【晶振百科】二、晶振的四个重要参数，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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目录- 晶振

型号- OT322524MJBA4SL,OT705016.384MJBA4SL,X49SD12MSD2SC,X503224576MSB2GI,OT503224MJBA4SL,OT705022.1184MJBA4SL,OT705024MJBA4SL,X49SM5MSD2SC,OT322520MJBA4SL,X322524MOB4S,X49SD147456MSD2SC,OT322526MJBA4SL,X49SD25MSD2SC,OT705020MJBA4SL,X49SM73728MSD2SC-1,X503230MSB4S,OT503220MJBA4SL,X321532768KGD2SI,X50321356MSB2GI,OT7050125MJBA4SL,X49SM3579545MSD2SC-1,X49SD16384MSD2SC,X50328MSB4SI,X322526MOB4SI,X49SD110592MSD2SC,X49SM18432MSD2SC,X5032221184MRB2GI,OT201624.576MJBA4SL,X322520MSB4S,X49SD8MSD2SC,X49SD67458MSD2SC-1,X322512MOB4S,OT705050MJBA4SL,X32258MOB4SI,X701532768KGD4GI,X49SM8MSD2S,X49SD24MSD2SC,X322524MRB4SI,X49SD1431818MSD2SC,X503230MSB2G,O93225100MEDA4SI,X50322712MSB2GI,X322530MSB4S,X503225MSB4S,OB7050148.5MLDB6SI-00,OT201632MJBA4SL,X49SD13MSD2SC,OT252027MJBA4SL,X201616MOB4S,OT252012MJBA4SL,X49SD36864MSD2SC-1,X49SM10MSD2SC,X49SM16MSD2SC,OK705032.768KJBA4SL,X322512288MPB4SI,X503232MSB4S,X161032768KGD2SI,X322527MSB4S,OT705012.288MJBA4SL,OB7050156.25MLDB6SI-00,X503212MSB4SI,X32252712MSB4SI,OT201654MJBA4SL,X49SD24576MSD2SC,OT322540MJBA4SL,X322512MSB4SI,X49SM12288MSD2SC,OT705024.576MJBA4SL,OT322548MJBA4SL,X49SD3579545MSD2SC-1,X49SD12288MSD2SC,X49SM27MSD2SC,OB7050125MLDB6SI-00,X49SD1356MSD2SC,X206032768KGA2SC,X503248MSB4S,X49SD4096MSD2SC-1,OT201620MJBA4SL,X308032768KGB2SC,OT201626MJBA4SL,X201632MMB4SI,X49SM6MSD2SC,OT705011.0592MJBA4SL,X503216MSB2G,X32251431818MSB4SI,X322524MMB4SI,X49SD73728MSD2SC-1,OA7050125MEDB6SI-00,X503224MSB4S,X252012MMB4SI-24,OT503250MJBA4SL,OT705030MJBA4SL,X322526MMB4SI,OT3225100MJBA4SL,X322530MOB4S,X201232768KGD2SI,X49SD20MSD2SC,X322548MSB4S,X5032147456MSB2G,X49SM24MSD2SC,OT705016MJBA4SL,X49SM67458MSD2SC-1,X322525MQB4S,OT70508MJBA4SL,X503225MSB2G,OT252050MJBA4SL,X49SM4MSD2SC,X49SM147456MSD2SC,OT252025MJBA4SL,X322525MMB4SI,OT201612MJBA4SL,X322513MSB4S,X49SM25MSD2SC,X49SM2712MSD2SC,X503227MSB4SI,X49SD16MSD2SC,X49SM13MSD2SC,OT32252MJBA4SL,X206032768KGB2SC,OT705025MJBA4SL,OT705027MJBA4SL,X49SD8192MSD2SC-1,OT322527MJBA4SL,OT32258MJBA4SL,X322540MOB4S,X49SM8192MSD2SC-1,X49SM26MSD2SC,OT322525MJBA4SL,X161232MKB4SI,X49SM49152MSD2SC-1,X32252712MMB4SI,X503224576MSB4SI,OT503227MJBA4SL,X322516MSB4SI,X49SD221184MSD2SC,OT503225MJBA4SL,X322525MOB4S,X50328MSB2GI,OT201640MJBA4SL,OT252024MJBA4SL,X49SD18432MSD2SC,OT252026MJBA4SL,OT252020MJBA4SL,XC322512MOB4SA-18,X322512MMB4SI,X50321356MSB4SI,OT201648MJBA4SL,X322532MMB4SI,X49SM16384MSD2SC,X49SM20MSD2SC,OB7050100MLDB6SI-00,OC322550MJBA4SA-18,X503224MSB2G,X322516MLB4SI,X49SD49152MSD2SC-1,X503216MSB4S,OT322516MJBA4SL,OT50328MJBA4SL,OT322512MJBA4SL,X50322712MSB4SI,X201632MOB4S,OT705010MJBA4SL,X161032768KLD2SI,XC322525MOB4SA-18,XC32258MSB4SA-18,X49SD55296MSD2SC-1,X322516384MSB4SI,X322526MLB4S,X32251356MSB4SI,OT503212MJBA4SL,KHZ无源晶振,X49SM221184MSD2SC,X503218432MSB2GI,X49SD6MSD2SC,X322516MOB4SI,X322540MPB4S,X503220MSB2G,OT25208MJBA4SL,OT201625MJBA4SL,X201616MLB4S,X49SM8MSD2SC,X322532MOB4S,X49SM55296MSD2SC-1,X201232768KJD2SI,OT705040MJBA4SL,OT705048MJBA4SL,OT503240MJBA4SL,X201632MKB4SI,X49SM24576MSD2SC,X5032110592MSB2G,OK503232.768KJBA4SL,OT322524.576MJBA4SL,OT201624MJBA4SL,X49SM12MSD2SC,X503220MSB4S,OT705011.2896MJBA4SL,X161032768KJD2SI,X503227MSB2G,X49SD26MSD2SC,X322525MSB4SI,OT252048MJBA4SL,X503232MSB2G,OT252040MJBA4SL,X49SM110592MSD2SC,OT322512.288MJBA4SL,OK322532.768KJBA4SL,X49SD27MSD2SC,X49SD2712MSD2SC,X503212MSB2G,X49SD10MSD2SC,X49SD4MSD2SC,X201616MKB4S,X5032110592MSB4SI,X49SM4096MSD2SC-1,X322524MSB4SI,OT705012MJBA4SL,OT322550MJBA4SL,OT70504MJBA4SL,X322512MLB4S,X49SM1356MSD2SC,OT201616MJBA4SL,X5032221184MSB4S,OT503248MJBA4SL,X49SM36864MSD2SC-1,OT201627MJBA4SL,OK252032.768KJBA4SL,X50321431818MSB2G,X803832768KGD4GI

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谐振器石英晶体谐振器插件DIP系列石英晶体谐振器插件SMD系列陶瓷谐振器振荡器 SPXO普通有源晶振 VCXO压电控制式振荡器 TCXO温度补偿式振荡器 OCXO恒温控制式振荡器滤波器声表滤波器SAW 体表滤波器BAW 薄膜腔声谐振滤波器FBAR

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