无源晶(jing)(jing)振(zhen)(zhen)是有2个引脚(jiao)的(de)(de)无极性元件需要(yao)(yao)借助于(yu)(yu)时(shi)(shi)钟(zhong)电(dian)(dian)路才能产(chan)(chan)(chan)生(sheng)振(zhen)(zhen)荡(dang)信(xin)(xin)(xin)(xin)号(hao)(hao)，自(zi)身无法振(zhen)(zhen)荡(dang)起(qi)来 无源晶(jing)(jing)振(zhen)(zhen)需要(yao)(yao)用(yong)(yong)DSP片(pian)内的(de)(de)振(zhen)(zhen)荡(dang)器(qi)，在datasheet上有建议的(de)(de)连接方法。无源晶(jing)(jing)振(zhen)(zhen)没(mei)有电(dian)(dian)压(ya)的(de)(de)问题，信(xin)(xin)(xin)(xin)号(hao)(hao)电(dian)(dian)平(ping)是可(ke)变的(de)(de)，也就是说(shuo)是根据起(qi)振(zhen)(zhen)电(dian)(dian)路来决定(ding)的(de)(de)，同样的(de)(de)晶(jing)(jing)振(zhen)(zhen)可(ke)以(yi)适用(yong)(yong)于(yu)(yu)多(duo)种(zhong)电(dian)(dian)压(ya)，可(ke)用(yong)(yong)于(yu)(yu)多(duo)种(zhong)不同时(shi)(shi)钟(zhong)信(xin)(xin)(xin)(xin)号(hao)(hao)电(dian)(dian)压(ya)要(yao)(yao)求的(de)(de)DSP，而且价格通(tong)常(chang)也较(jiao)低(di)，因此对于(yu)(yu)一般的(de)(de)应(ying)用(yong)(yong)如果条件许(xu)可(ke)建议用(yong)(yong)晶(jing)(jing)体(ti)，这尤其(qi)适合于(yu)(yu)产(chan)(chan)(chan)品线丰富(fu)批量大的(de)(de)生(sheng)产(chan)(chan)(chan)者。无源晶(jing)(jing)振(zhen)(zhen)相对于(yu)(yu)晶(jing)(jing)振(zhen)(zhen)而言其(qi)缺(que)陷是信(xin)(xin)(xin)(xin)号(hao)(hao)质量较(jiao)差，通(tong)常(chang)需要(yao)(yao)精(jing)确匹(pi)(pi)配(pei)外部电(dian)(dian)路（用(yong)(yong)于(yu)(yu)信(xin)(xin)(xin)(xin)号(hao)(hao)匹(pi)(pi)配(pei)的(de)(de)电(dian)(dian)容、电(dian)(dian)感(gan)、电(dian)(dian)阻等），更换不同频率的(de)(de)晶(jing)(jing)体(ti)时(shi)(shi)周边配(pei)置电(dian)(dian)路需要(yao)(yao)做相应(ying)的(de)(de)调整。使(shi)用(yong)(yong)时(shi)(shi)建议采用(yong)(yong)精(jing)度(du)较(jiao)高的(de)(de)石英晶(jing)(jing)体(ti)，尽可(ke)能不要(yao)(yao)采用(yong)(yong)精(jing)度(du)低(di)的(de)(de)陶(tao)瓷晶(jing)(jing)体(ti)。 声表(biao)谐(xie)(xie)振(zhen)(zhen)器(qi)原装厂(chang)家(jia)直(zhi)销选凯轩(xuan)业电(dian)(dian)子科技有限公(gong)司。机(ji)械声表(biao)谐(xie)(xie)振(zhen)(zhen)器(qi)批发厂(chang)家(jia)

晶(jing)(jing)(jing)体本(ben)身不能(neng)产生振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)荡(dang)信号，必须借助于外(wai)部(bu)(bu)(bu)的振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)荡(dang)器(qi)(qi)(qi)电(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(两端施(shi)加电(dian)(dian)(dian)压)，即：振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)荡(dang)信号的产生 = 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)荡(dang)器(qi)(qi)(qi)件 + 振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)荡(dang)器(qi)(qi)(qi)电(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)其中，振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)荡(dang)器(qi)(qi)(qi)件除(chu)了晶(jing)(jing)(jing)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)外(wai)，还(hai)可以是RC振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)荡(dang)电(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)，LC振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)荡(dang)电(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)等 有(you)源(yuan)晶(jing)(jing)(jing)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)和无(wu)源(yuan)晶(jing)(jing)(jing)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)的区别无(wu)源(yuan)晶(jing)(jing)(jing)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)严格(ge)意义上(shang)来说应该叫做晶(jing)(jing)(jing)体(元件名称为(wei)Cystal，晶(jing)(jing)(jing)体)无(wu)源(yuan)晶(jing)(jing)(jing)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)内(nei)部(bu)(bu)(bu)是石英晶(jing)(jing)(jing)体切片，无(wu)源(yuan)晶(jing)(jing)(jing)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)没(mei)有(you)时(shi)钟(zhong)电(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)相(xiang)对于无(wu)源(yuan)晶(jing)(jing)(jing)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)，有(you)源(yuan)晶(jing)(jing)(jing)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)（元件名称为(wei)Oscillator，振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)荡(dang)器(qi)(qi)(qi)）内(nei)部(bu)(bu)(bu)的其他元件构成(cheng)时(shi)钟(zhong)电(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)无(wu)源(yuan)晶(jing)(jing)(jing)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)使用时(shi)，需要自己(ji)设计振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)荡(dang)电(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)，例(li)如利(li)用STM32内(nei)部(bu)(bu)(bu)的HSE提供时(shi)钟(zhong)电(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)无(wu)源(yuan)晶(jing)(jing)(jing)振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)的优势在于，由于没(mei)有(you)外(wai)部(bu)(bu)(bu)电(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)，因此支持的电(dian)(dian)(dian)位(wei)更多，方(fang)便根据(ju)自己(ji)设计的电(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)进行调整(zheng)机械声表(biao)(biao)谐振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)器(qi)(qi)(qi)批发(fa)厂(chang)家深圳市凯轩业科技厂(chang)家直销(xiao)，原装声表(biao)(biao)谐振(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)器(qi)(qi)(qi)。

晶(jing)(jing)体振(zhen)(zhen)荡器(qi)(qi)(qi)（crystal oscillator）是(shi)指从一块石英(ying)晶(jing)(jing)体上按一定(ding)方位角(jiao)切(qie)下薄片(pian)（简称为(wei)晶(jing)(jing)片(pian)），石英(ying)晶(jing)(jing)体谐振(zhen)(zhen)器(qi)(qi)(qi)，简称为(wei)石英(ying)晶(jing)(jing)体或晶(jing)(jing)体、晶(jing)(jing)振(zhen)(zhen)；而在封(feng)装(zhuang)内部添加IC组成振(zhen)(zhen)荡电(dian)(dian)(dian)(dian)路的(de)(de)(de)晶(jing)(jing)体元件称为(wei)晶(jing)(jing)体振(zhen)(zhen)荡器(qi)(qi)(qi)。其产品(pin)一般用(yong)金属外壳封(feng)装(zhuang)，也有(you)用(yong)玻璃壳、陶瓷或塑料(liao)封(feng)装(zhuang)的(de)(de)(de)。晶(jing)(jing)振(zhen)(zhen)广大应(ying)用(yong)、民用(yong)通信(xin)电(dian)(dian)(dian)(dian)台，微波通信(xin)设(she)(she)备(bei)，程控电(dian)(dian)(dian)(dian)话交换(huan)机，无线电(dian)(dian)(dian)(dian)综合(he)测试仪(yi)、移动(dong)电(dian)(dian)(dian)(dian)话发射(she)台，高级频(pin)率计(ji)数器(qi)(qi)(qi)、GPS、卫星(xing)通信(xin)、遥控移动(dong)设(she)(she)备(bei)等，是(shi)电(dian)(dian)(dian)(dian)子产品(pin)较常用(yong)的(de)(de)(de)不可或缺的(de)(de)(de)组件，小到手(shou)机、电(dian)(dian)(dian)(dian)脑，大到导弹、卫星(xing)都需(xu)要晶(jing)(jing)体振(zhen)(zhen)荡器(qi)(qi)(qi)，其被誉为(wei)电(dian)(dian)(dian)(dian)子设(she)(she)备(bei)的(de)(de)(de)心脏，在电(dian)(dian)(dian)(dian)子系统(tong)中扮(ban)演关键(jian)角(jiao)色。

声表面波(bo)(bo)(bo)(SAW)谐(xie)(xie)振(zhen)(zhen)器(qi)声表面波(bo)(bo)(bo)滤(lv)(lv)波(bo)(bo)(bo)器(qi)/SAW 声表面波(bo)(bo)(bo)谐(xie)(xie)振(zhen)(zhen)器(qi)(surface- acoustic- wave)。SAW 声表面波(bo)(bo)(bo)元(yuan)件(jian)主(zhu)要作用(yong)(yong)(yong)原理(li)是利用(yong)(yong)(yong)压(ya)(ya)电(dian)材料的(de)(de)压(ya)(ya)电(dian)特性，利用(yong)(yong)(yong)输入与输出(chu)换(huan)能(neng)器(qi)（Transducer）将电(dian)波(bo)(bo)(bo)的(de)(de)输入讯号(hao)转换(huan)成机械(xie)能(neng)，经过(guo)处(chu)理(li)后，再把机械(xie)能(neng)转换(huan)成电(dian)的(de)(de)讯号(hao)，以达到过(guo)滤(lv)(lv)不必(bi)要的(de)(de)讯号(hao)及(ji)(ji)(ji)(ji)杂讯，提升(sheng)收讯品质的(de)(de)目标。被广大(da)应用(yong)(yong)(yong)在各种无线通(tong)讯系(xi)(xi)统(tong)、电(dian)视机、录放影机及(ji)(ji)(ji)(ji)全球卫星(xing)定位系(xi)(xi)统(tong)接(jie)收器(qi)上。主(zhu)要功用(yong)(yong)(yong)在于把杂讯滤(lv)(lv)掉，比传统(tong)的(de)(de) LC 滤(lv)(lv)波(bo)(bo)(bo)器(qi)安装更简单(dan)、体积更小(xiao)。 SAW 声表面波(bo)(bo)(bo)元(yuan)件(jian)的(de)(de)制作可(ke)分(fen)为晶圆清洗、镀金属膜、上光阻(zu)、显影、蚀刻(ke)、去光阻(zu)、切割、封(feng)装、等(deng)(deng)相关(guan)步骤，具有(you)可(ke)大(da)量生产、损耗低(di)及(ji)(ji)(ji)(ji)选(xuan)择性高(gao)，适用(yong)(yong)(yong)于各型手(shou)机等(deng)(deng)特点。有(you)性能(neng)稳定、尺寸小(xiao)的(de)(de)特点，主(zhu)要应用(yong)(yong)(yong)于无线设(she)备(bei)。声表滤(lv)(lv)波(bo)(bo)(bo)器(qi)中的(de)(de)FL系(xi)(xi)列主(zhu)要应用(yong)(yong)(yong)于蜂窝(wo)如移动通(tong)讯、接(jie)收器(qi)等(deng)(deng)。FM系(xi)(xi)列有(you)低(di)损耗性、高(gao)级度的(de)(de)排他(ta)性以及(ji)(ji)(ji)(ji)对外部阻(zu)抗的(de)(de)低(di)匹配性。它可(ke)应用(yong)(yong)(yong)于汽车TPMS、远程无键进(jin)入(RKE)、安全系(xi)(xi)统(tong)和(he)有(you)源RFID标签。声表谐(xie)(xie)振(zhen)(zhen)器(qi)深(shen)圳市(shi)凯轩业科技有(you)限公(gong)司(si)，欢(huan)迎亲咨询。

晶(jing)(jing)振用一(yi)种(zhong)能把电能和机械能相互转化的(de)(de)晶(jing)(jing)体(ti)(ti)在(zai)共振的(de)(de)状态(tai)下工作(zuo)，以提供稳定(ding)，精确的(de)(de)单(dan)频(pin)(pin)(pin)振荡(dang)(dang)。在(zai)通(tong)常(chang)工作(zuo)条件下，普通(tong)的(de)(de)晶(jing)(jing)振频(pin)(pin)(pin)率的(de)(de)精度(du)可达百万分之(zhi)五十。高级的(de)(de)精度(du)更高。有些晶(jing)(jing)振还可以由外加电压在(zai)一(yi)定(ding)范围内调整频(pin)(pin)(pin)率，称为压控振荡(dang)(dang)器(qi)（VCO）。晶(jing)(jing)振的(de)(de)作(zuo)用是(shi)为系(xi)统提供基本的(de)(de)时(shi)(shi)钟(zhong)信号。通(tong)常(chang)一(yi)个系(xi)统共用一(yi)个晶(jing)(jing)振，便于各部分保(bao)持同(tong)步。有些通(tong)讯系(xi)统的(de)(de)基频(pin)(pin)(pin)和射频(pin)(pin)(pin)使用不(bu)同(tong)的(de)(de)晶(jing)(jing)振，而通(tong)过(guo)电子调整频(pin)(pin)(pin)率的(de)(de)方法保(bao)持同(tong)步。无(wu)源晶(jing)(jing)振为crystal（晶(jing)(jing)体(ti)(ti)）无(wu)源晶(jing)(jing)振是(shi)有2个引脚的(de)(de)无(wu)极(ji)性元件，需要(yao)借助于时(shi)(shi)钟(zhong)电路才能产(chan)生(sheng)振荡(dang)(dang)信号，自身无(wu)法荡(dang)(dang)起(qi)来；原(yuan)装芯(xin)片(pian)，厂家(jia)直销声表谐振器(qi)欢迎(ying)新老客(ke)户咨询(xun)。机械声表谐振器(qi)批发厂家(jia)

线性(xing)稳(wen)压(ya)(ya)(ya)电源调节滤波(bo)后的直流(liu)电压(ya)(ya)(ya)，以使输(shu)入(ru)电压(ya)(ya)(ya)达到要求的值和精(jing)度要求。凯轩业。机械(xie)声表谐振器批发厂家

内(nei)(nei)部(bu)(bu)(bu)时(shi)(shi)(shi)钟与(yu)外(wai)(wai)部(bu)(bu)(bu)时(shi)(shi)(shi)钟现在很(hen)多的(de)(de)处(chu)(chu)(chu)理(li)(li)器(qi)(qi)内(nei)(nei)部(bu)(bu)(bu)都会自(zi)带一个(ge)振(zhen)(zhen)(zhen)荡(dang)(dang)(dang)电(dian)路，因此(ci)，这一类的(de)(de)处(chu)(chu)(chu)理(li)(li)器(qi)(qi)外(wai)(wai)部(bu)(bu)(bu)时(shi)(shi)(shi)钟是指自(zi)己内(nei)(nei)部(bu)(bu)(bu)的(de)(de)振(zhen)(zhen)(zhen)荡(dang)(dang)(dang)电(dian)路搭配(pei)外(wai)(wai)部(bu)(bu)(bu)的(de)(de)无(wu)(wu)源(yuan)晶(jing)(jing)振(zhen)(zhen)(zhen) 也可以用有(you)源(yuan)晶(jing)(jing)振(zhen)(zhen)(zhen)，不(bu)经过处(chu)(chu)(chu)理(li)(li)器(qi)(qi)内(nei)(nei)部(bu)(bu)(bu)自(zi)带的(de)(de)起振(zhen)(zhen)(zhen)电(dian)路。还有(you)一些(xie)处(chu)(chu)(chu)理(li)(li)器(qi)(qi)，没有(you)带起振(zhen)(zhen)(zhen)电(dian)路，所以其外(wai)(wai)部(bu)(bu)(bu)时(shi)(shi)(shi)钟通常是指外(wai)(wai)部(bu)(bu)(bu)需(xu)要一个(ge)完(wan)整的(de)(de)振(zhen)(zhen)(zhen)荡(dang)(dang)(dang)器(qi)(qi)，即无(wu)(wu)源(yuan)晶(jing)(jing)振(zhen)(zhen)(zhen)+振(zhen)(zhen)(zhen)荡(dang)(dang)(dang)电(dian)路或有(you)源(yuan)晶(jing)(jing)振(zhen)(zhen)(zhen) 有(you)些(xie)处(chu)(chu)(chu)理(li)(li)器(qi)(qi)内(nei)(nei)部(bu)(bu)(bu)会自(zi)带振(zhen)(zhen)(zhen)荡(dang)(dang)(dang)电(dian)路，例如RC振(zhen)(zhen)(zhen)荡(dang)(dang)(dang)电(dian)路，其内(nei)(nei)部(bu)(bu)(bu)时(shi)(shi)(shi)钟就是这一类振(zhen)(zhen)(zhen)荡(dang)(dang)(dang)器(qi)(qi)所产生的(de)(de)时(shi)(shi)(shi)钟信(xin)号，注意：在精(jing)度方面，RC振(zhen)(zhen)(zhen)荡(dang)(dang)(dang)器(qi)(qi)要远低于晶(jing)(jing)振(zhen)(zhen)(zhen)，且(qie)容(rong)易受到温度的(de)(de)影(ying)响。有(you)些(xie)处(chu)(chu)(chu)理(li)(li)器(qi)(qi)内(nei)(nei)部(bu)(bu)(bu)有(you)振(zhen)(zhen)(zhen)荡(dang)(dang)(dang)电(dian)路，外(wai)(wai)部(bu)(bu)(bu)再搭配(pei)无(wu)(wu)源(yuan)晶(jing)(jing)振(zhen)(zhen)(zhen)，这个(ge)有(you)点像外(wai)(wai)部(bu)(bu)(bu)时(shi)(shi)(shi)钟，这是由于不(bu)同的(de)(de)处(chu)(chu)(chu)理(li)(li)器(qi)(qi)设计(ji)思路的(de)(de)差异(yi)，因此(ci)需(xu)要参(can)考(kao)相应的(de)(de)Datasheet。机械(xie)声表谐(xie)振(zhen)(zhen)(zhen)器(qi)(qi)批发厂家(jia)

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