五花八门的晶振叫法如何区分？

时间： 2024-04-25 来源：浩都频率官网

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晶振名称的混淆性是一个真实的现状，由于晶振生产厂家与晶振终端用户对晶振的叫法在很多情况下存在差异，导致终端客户采购部及电子工程师对晶振也出现五花八门的叫法。总之，各有各的理由，各有各的说法。那么具体应该怎么区分呢？本文中浩都频率来为大家介绍一二。

一般来说，我们把晶振分为有源晶振和无源晶振两大类。无源晶振的全称为石英晶振谐振器，其英文名译为“crystal”，直译为晶体，因此有人喜欢把无源晶振叫作“晶体”。

有源晶振的全称为石英晶体振荡器，其英文名译为“oscillator”，直译为振荡器，因此有人喜欢把有源晶振称为“振荡器”。

但是，把无源晶振叫作“晶体”的人，习惯于把有源晶振直接叫作“晶振”。而把无源晶振叫作“晶振”的人，则又喜欢把有源晶振叫作“钟振”。显而易见，当遇到这两类人群，晶振到底是有源晶振还是无源晶振，已经混淆不清，因为在晶振名称上产生的逻辑性冲突太大了。

晶振能为单片机、电路提供频率基准，可以说是单片机的心脏。在设计单片机电路时，晶振是必不可少的电路。相对而言，有源晶振比无源晶振的精度、信号质量和稳定性上都要好，当然价格也比较高。

这里的“源”指的是振荡源或者起振电路，无源晶振没有起振电路，需要外加两颗负载电容；而有源晶振包含起振电路，能直接输出一定频率的方波信号。

在设计电路时，无源晶振需要外接两颗负载电容，一般有两个引脚；而有源晶振需要外接电源，一般有四个引脚。

简而言之，不管别人对晶振产品采取怎样的叫法，直接的方式是：说清楚是有源晶振还是无源晶振。再简单通俗一点：带电压还是不带电压，一步搞定！

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本文由星晴123转载自浩都频率官网，原文标题为:五花八门的晶振叫法如何区分？，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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