yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">  陶瓷谐振器用于显示器yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">超声波流量计传感器和配备在各种智能电表（电力yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">燃气yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">热力yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">水厂）中的微型计算机yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">而石英晶体单元用于yle="word-spacing:-1.5px;font-size:16px">ICyle="word-spacing:-1.5px;font-size:16px;font-family:宋体">用于有线和无线通信yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">压电发声器是用于数据读取检查声音设备yle="word-spacing:-1.5px;font-size:16px">.

yle="word-spacing:-1.5px;font-size:16px">yle="word-spacing:-1.5px;font-size:16px;font-family:宋体"> 村田晶振拥有一流的生产技术yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">先进的设备yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">为广大用户提供了无数优异的产品yle="word-spacing:-1.5px;font-size:16px">.yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">村田除了陶瓷晶振yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">石英晶体yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">有源晶体振荡器做的也相当出色yle="word-spacing:-1.5px;font-size:16px">.yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">高稳定的产品质量被广泛用于无线网络yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">数码电子yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">车载系统yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-size:16px;font-family:宋体">工业设备等领域yle="word-spacing:-1.5px;font-size:16px">.

yle="font-family:宋体;font-size:16px">  在互联化、智能化、数字化转型的时代yle="font-size:16px">,yle="font-family:宋体;font-size:16px">电子系统已经无处不在yle="font-size:16px">,yle="font-family:宋体;font-size:16px">并且在各个行业中变得越来越复杂yle="font-size:16px">,yle="font-family:宋体;font-size:16px">在产品设计中的比重也越来越高yle="font-size:16px">.yle="font-family:宋体;font-size:16px">同时yle="font-size:16px">,yle="font-family:宋体;font-size:16px">电子系统设计研发和生产也在发生革命性的变革yle="font-size:16px">.

yle="font-family:宋体;font-size:16px">  如何在这个变革的时代生存并超越对手是当今电子系统设计领域面临的新挑战yle="font-size:16px">.yle="font-family:宋体;font-size:16px">以下是统一电子针对蓝牙应用中的yle="font-size:16px">ICyle="font-family:宋体;font-size:16px">搭配村田晶振标准型号推荐yle="font-size:16px">,yle="font-family:宋体;font-size:16px">欢迎广大用户收藏点评yle="font-size:16px">.

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">当您设计石英晶体yle="font-size:16px">PCByle="font-family:宋体;font-size:16px">布局时yle="font-size:16px">,yle="font-family:宋体;font-size:16px">必须防止降低负电阻和以防止yle="font-size:16px">EMIyle="font-family:宋体;font-size:16px">问题yle="font-size:16px">.

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">振荡电路的模式长度振荡电路中的信号模式的长度应尽可能短yle="font-size:16px">,yle="font-family:宋体;font-size:16px">以最大限度地减少杂散电容yle="font-size:16px">/yle="font-family:宋体;font-size:16px">电感yle="font-size:16px">.yle="font-family:宋体;font-size:16px">通孔不应用于振荡电路yle="font-size:16px">,yle="font-family:宋体;font-size:16px">因为它会导致较大的yle="font-size:16px">EMI.

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">振荡电路周围的图案的影响

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">当接地和振荡电路之间的寄生电容变大时yle="font-size:16px">,yle="font-family:宋体;font-size:16px">接地或信号路径不应位于多层电路板的中间层中以与贴片石英晶振的振荡电路重叠yle="font-size:16px">.

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">由于振荡裕度不足yle="font-size:16px">,yle="font-family:宋体;font-size:16px">大的杂散电容可能导致振荡停止yle="font-size:16px">.yle="font-family:宋体;font-size:16px">位于yle="font-size:16px">C-MOSyle="font-family:宋体;font-size:16px">逆变器输入附近的信号路径可能会产生yle="font-size:16px">EMI,yle="font-family:宋体;font-size:16px">因为波形中的噪声被放大yle="font-size:16px">.

yle="font-size:16px">   日本生产电子元件极为出名,不管是贴片电容,电感,还是贴片晶振,更多的工厂企业还是比较倾向于选择日本进口,不仅仅是因为价格优势,更是因其高稳定的产品质量以及快速的交货期.

yle="font-size:16px">   村田通过为各种市场和应用创新,设计和供应石英贴片晶振以及解决方案,为社会的进步做出贡献,村田电子的电子元件市场也在不断发展.村田所制造的陶瓷晶振位于世界前三,而今所生产的石英晶振同样备受用户欢迎.下列是村田晶体分类应用列表.

yle="font-size:16px">   muRata Crystal被用于各种应用,例如汽车电子,通信,个人计算和医疗/保健设备.

yle="font-size:16px">日本村田所面向消费市场的石英晶体单元（XRCGB系列）采用了突破性的独特包装技术,这种技术在现有产品中是无与伦比的,可提供卓越的品质,生产规模和性价比.

yle="font-size: 16px;">村田公司开发的2.0x1.6mm尺寸满足了尺寸缩小的增加要求.yle="font-size: 16px;">与现有的3.2x2.5mm尺寸相比,尺寸减小了60％.

yle="font-size: 16px;">丰富的产品阵容,可满足各种应用需求.比如用于近场无线电通信：蓝牙®/蓝牙®低功耗（BLE/NFC,用于存储：SSD等.

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">

yle="font-family: 宋体; font-size: 16px;">  晶振振荡电路中的哪些因素会导致模块故障？如何补救yle="font-size:16px;">?

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">在晶体谐振器,晶振振荡电路中导致谐振器模块故障的yle="font-size:16px">4yle="font-family:宋体;font-size:16px">个关键点因素以及对应的补救措施：

yle=" text-indent: 2em;"> yle="font-size:16px">1.yle="font-family:宋体;font-size:16px">振荡没有开始yle="font-size:16px">,yle="font-family:宋体;font-size:16px">或振荡停止

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">如果振荡电路不工作yle="font-size:16px">,yle="font-family:宋体;font-size:16px">则基于定时时钟运行的模块将不起作用yle="font-size:16px">.yle="font-family:宋体;font-size:16px">检查晶振晶体的频率或波形yle="font-size:16px">,yle="font-family:宋体;font-size:16px">以确保驱动振荡电路或所需的频率yle="font-size:16px">.

yle=" text-indent: 2em;"> yle="font-size:16px">2.yle="font-family:宋体;font-size:16px">石英晶体实际振荡频率与标称频率不同

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">如果石英晶体的实际振荡频率超出模块所需的频率范围yle="font-size:16px">,yle="font-family:宋体;font-size:16px">则会发生yle="font-size:16px">ICyle="font-family:宋体;font-size:16px">中的事务定时错误或数据传输yle="font-size:16px">/yle="font-family:宋体;font-size:16px">接收错误yle="font-size:16px">.yle="font-family:宋体;font-size:16px">如果实际振荡频率从标称频率偏移yle="font-size:16px">,yle="font-family:宋体;font-size:16px">则将考虑以下原因：

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">①晶体单元的实际驱动电平超过其指定的最大值yle="font-size:16px">.yle="font-family:宋体;font-size:16px">②实际负载电容与规范中的指定值不同③振荡不正常yle="font-size:16px">.

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">yle="font-size:16px">yle="font-family:宋体;font-size:16px">yle="font-size:16px">

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">什么是yle="font-size:16px">>1MHzyle="font-family:宋体;font-size:16px">振荡器的电源噪声灵敏度指标yle="font-size:16px">?

yle=" text-indent: 2em;"> yle="font-size:16px">MHzyle="font-family:宋体;font-size:16px">振荡器的电源噪声灵敏度yle="font-size:16px">(PSNR)yle="font-family:宋体;font-size:16px">是根据在指定噪声频率下注入的每yle="font-size:16px">mVyle="font-family:宋体;font-size:16px">电源噪声引起的抖动量来量化的yle="font-size:16px">.SiTime MEMS MHzyle="font-family:宋体;font-size:16px">振荡器旨在实现同类最佳yle="font-size:16px">PSNRyle="font-family:宋体;font-size:16px">性能yle="font-size:16px">,yle="font-family:宋体;font-size:16px">在yle="font-size:16px">10kHzyle="font-family:宋体;font-size:16px">至yle="font-size:16px">20MHzyle="font-family:宋体;font-size:16px">频率范围内yle="font-size:16px">,yle="font-family:宋体;font-size:16px">每yle="font-size:16px">mVyle="font-family:宋体;font-size:16px">注入电源噪声可实现低至yle="font-size:16px">0.21psyle="font-family:宋体;font-size:16px">的集成相位抖动yle="font-size:16px">(12kHzyle="font-family:宋体;font-size:16px">至yle="font-size:16px">20MHz).

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">什么是yle="font-size:16px"><1MHzyle="font-family:宋体;font-size:16px">振荡器的电源噪声灵敏度指标yle="font-size:16px">?

yle=" text-indent: 2em;"> yle="font-size:16px">kHzyle="font-family:宋体;font-size:16px">振荡器系列yle="font-size:16px">(SiT153x,SiT1552,SiT1630)yle="font-family:宋体;font-size:16px">的电源噪声灵敏度yle="font-size:16px">(PSNR)yle="font-family:宋体;font-size:16px">根据SiTime晶振频率偏差进行量化yle="font-size:16px">,yle="font-family:宋体;font-size:16px">在yle="font-size:16px">10KHzyle="font-family:宋体;font-size:16px">至yle="font-size:16px">10MHzyle="font-family:宋体;font-size:16px">的频率范围内进行yle="font-size:16px">300mVyle="font-family:宋体;font-size:16px">峰峰值正弦噪声注入yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">村田制作所通过开发和供应石英贴片晶振yle="font-size:16px">,yle="font-family:宋体;font-size:16px">电容器和传感器等电子元件来支持汽车信息yle="font-size:16px">/yle="font-family:宋体;font-size:16px">舒适yle="font-size:16px">/yle="font-family:宋体;font-size:16px">配件yle="font-size:16px">,yle="font-family:宋体;font-size:16px">这些元件利用了高可靠性（与yle="font-size:16px">CEyle="font-family:宋体;font-size:16px">兼容的产品）yle="font-size:16px">,yle="font-family:宋体;font-size:16px">例如陶瓷特有的耐热性和抗振性yle="font-size:16px">.
yle="font-family:宋体;font-size:16px">我们将通过利用yle="font-size:16px">3Gyle="font-family:宋体;font-size:16px">和yle="font-size:16px">4Gyle="font-family:宋体;font-size:16px">信息通信设备中培养的高频技术的连接模块yle="font-size:16px">,yle="font-family:宋体;font-size:16px">为汽车导航和yle="font-size:16px">IVIyle="font-family:宋体;font-size:16px">（车载信息娱乐）的传播以及汽车yle="font-size:16px">M2Myle="font-family:宋体;font-size:16px">（yle="font-size:16px">Telematicsyle="font-family:宋体;font-size:16px">）的实现做出贡献yle="font-size:16px">.

yle="margin-left: 24px;text-indent: 2em"> yle="font-size:16px">1、yle="font-variant-numeric:normal;font-stretch:normal;font-size:16px;font-family:'times new roman'">  yle="font-family:宋体;font-size:16px">导航yle="font-size:16px">/yle="font-family:宋体;font-size:16px">信息娱乐

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">加速度传感器yle="font-size:16px">SCAyle="font-family:宋体;font-size:16px">系列、陶瓷过滤器yle="font-size:16px">SFECFyle="font-family:宋体;font-size:16px">系列、压电发声器yle="font-size:16px">PKLCS/PKMCSyle="font-family:宋体;font-size:16px">系列yle="font-size:16px">、蓝牙模块、yle="font-size:16px">Wi-Fiyle="font-family:宋体;font-size:16px">模块、yle="font-size:16px">DC-DCyle="font-family:宋体;font-size:16px">转换器、yle="font-family:宋体;color:windowtext;font-size:16px">陶瓷谐振器yle="color:windowtext;font-size:16px">CERALOCK®/yle="font-size:16px">CSTyle="font-family:宋体;font-size:16px">系列、晶体振荡器yle="font-size:16px">XRCyle="font-family:宋体;font-size:16px">系列

yle="text-indent: 2em"> yle="text-indent:2em;font-size:16px">2yle="text-indent:2em;font-family:宋体;font-size:16px">、遥控无钥匙进入

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">陶瓷过滤器yle="font-size:16px">Cerafil®/SFECFyle="font-family:宋体;font-size:16px">系列、陶瓷谐振器yle="font-size:16px">CERALOCK®/CSTyle="font-family:宋体;font-size:16px">系列、晶体振荡器yle="font-size:16px">XRCyle="font-family:宋体;font-size:16px">系列、压电发声器yle="font-size:16px">PKLCS/PKMCSyle="font-family:宋体;font-size:16px">系列、天线线圈yle="font-size:16px">STA8121yle="font-family:宋体;font-size:16px">系列、天线线圈yle="font-size:16px">SA3M08yle="font-family:宋体;font-size:16px">系列、天线线圈yle="font-size:16px">SA3D12/SA3D14yle="font-family:宋体;font-size:16px">系列、硬币型二氧化锰锂电池yle="font-size:16px">/yle="font-family:宋体;font-size:16px">标准型

yle="text-indent: 2em"> yle="font-size:16px">SiTimeyle="font-family:宋体;font-size:16px">公司是yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">计时的市场领导者yle="font-size:16px">,yle="font-family:宋体;font-size:16px">也是yle="font-size:16px">Mega Chipsyle="font-family:宋体;font-size:16px">公司（东京证券交易所：yle="font-size:16px">6875yle="font-family:宋体;font-size:16px">）的全资子公司yle="font-size:16px">,yle="font-family:宋体;font-size:16px">提供基于yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">的硅计时系统解决方案yle="font-size:16px">.SiTime Crystalyle="font-family:宋体;font-size:16px">的可配置解决方案提供丰富的功能集yle="font-size:16px">,yle="font-family:宋体;font-size:16px">使客户能够以高性能yle="font-size:16px">,yle="font-family:宋体;font-size:16px">小尺寸yle="font-size:16px">,yle="font-family:宋体;font-size:16px">低功耗和高可靠性使其产品与众不同yle="font-size:16px">.yle="font-family:宋体;font-size:16px">通过使用标准半导体工艺和大批量封装yle="font-size:16px">,SiTimeyle="font-family:宋体;font-size:16px">可缩短交付周期yle="font-size:16px">,yle="font-family:宋体;font-size:16px">并可满足不可预测的需求yle="font-size:16px">.yle="font-family:宋体;font-size:16px">以下所介绍到的是用于yle="font-size:16px">5Gyle="font-family:宋体;font-size:16px">网络无线电同步的yle="font-size:16px">Sitime TCXOyle="font-family:宋体;font-size:16px">晶振yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-size:16px">SiTimeyle="font-family:宋体;font-size:16px">专注于为用户提供高性能频率元件yle="font-size:16px">,SiTimeyle="font-family:宋体;font-size:16px">提供yle="font-size:16px">105yle="font-family:宋体;font-size:16px">℃ yle="font-size:16px">Elite Platformyle="font-family:宋体;font-size:16px">™yle="font-size:16px">MEMS Super-TCXOsyle="font-family:宋体;font-size:16px">™批量生产yle="font-size:16px">,yle="font-family:宋体;font-size:16px">用于同步在恶劣环境中运行的yle="font-size:16px">5Gyle="font-family:宋体;font-size:16px">和yle="font-size:16px">4G+yle="font-family:宋体;font-size:16px">无线电yle="font-size:16px">.SiTime TCXOyle="font-family:宋体;font-size:16px">晶振可在电话杆yle="font-size:16px">,yle="font-family:宋体;font-size:16px">建筑物和灯柱上实现更小yle="font-size:16px">,yle="font-family:宋体;font-size:16px">更密集部署的无线电yle="font-size:16px">,yle="font-family:宋体;font-size:16px">并且仍然保持网络服务质量yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">越来越多地使用车载电子系统增加了对可靠汽车级的需求参考定时组件yle="font-size:16px">.yle="font-family:宋体;font-size:16px">今天yle="font-size:16px">,yle="font-family:宋体;font-size:16px">最高质量的汽车定时解决方案基于yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">定时技术yle="font-size:16px">,yle="font-family:宋体;font-size:16px">这种技术本质上比石英晶体技术更强大yle="font-size:16px">.yle="font-family:宋体;font-size:16px">硅yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">定时组件使用由yle="font-size:16px">ICyle="font-family:宋体;font-size:16px">开发的严格控制和标准制造行业yle="font-size:16px">.yle="font-family:宋体;font-size:16px">这些工艺和标准与yle="font-size:16px">SiTimeyle="font-family:宋体;font-size:16px">专有的yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">和模拟yle="font-size:16px">ICyle="font-family:宋体;font-size:16px">相结合技术带来了超高品质的产品yle="font-size:16px">.yle="font-family:宋体;font-size:16px">而且因为这些定时器件都是基于硅的yle="font-size:16px">,yle="font-family:宋体;font-size:16px">它们符合yle="font-size:16px">AEC-Q100yle="font-family:宋体;font-size:16px">标准yle="font-size:16px">,yle="font-family:宋体;font-size:16px">与yle="font-size:16px">AEC-Q200yle="font-family:宋体;font-size:16px">相比具有更高的认证要求yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">硅yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">制造工艺

yle="text-indent: 2em"> yle="font-size:16px">SiTime MEMSyle="font-family:宋体;font-size:16px">谐振器采用单晶硅制造yle="font-size:16px">,yle="font-family:宋体;font-size:16px">是一种yle="font-size:16px">15yle="font-family:宋体;font-size:16px">倍的无缺陷材料比钛强yle="font-size:16px">.SiTimeyle="font-family:宋体;font-size:16px">的谐振器采用获得专利的yle="font-size:16px">MEMSFirstyle="font-family:宋体;font-size:16px">™和yle="font-size:16px">EpiSealyle="font-family:宋体;font-size:16px">™制造工艺yle="font-size:16px">,yle="font-family:宋体;font-size:16px">可在yle="font-size:16px">1100℃yle="font-family:宋体;font-size:16px">下对谐振器进行退火yle="font-size:16px">.yle="font-family:宋体;font-size:16px">因此yle="font-size:16px">,yle="font-family:宋体;font-size:16px">极端汽车环境中存在的温度对yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">谐振器没有任何有意义的影响yle="font-size:16px">.yle="font-family:宋体;font-size:16px">这种高温工艺生产出一种密封的高质量谐振器没有污染物yle="font-size:16px">.yle="font-family:宋体;font-size:16px">谐振器完全封装在硅芯片内yle="font-size:16px">,yle="font-family:宋体;font-size:16px">非常适合能抵抗外部伤害yle="font-size:16px">.MEMSyle="font-family:宋体;font-size:16px">谐振器可以像标准yle="font-size:16px">CMOSyle="font-family:宋体;font-size:16px">芯片一样处理并使用标准yle="font-size:16px">ICyle="font-family:宋体;font-size:16px">封装工艺封装yle="font-size:16px">.yle="font-family:宋体;font-size:16px">通过使用yle="font-size:16px">MEMSFirstyle="font-family:宋体;font-size:16px">工艺yle="font-size:16px">,ISO/TSyle="font-family:宋体;font-size:16px">经过yle="font-size:16px">16949yle="font-family:宋体;font-size:16px">认证的半导体供应链yle="font-size:16px">,yle="font-family:宋体;font-size:16px">以及标准封装工艺yle="font-size:16px">,MEMSyle="font-family:宋体;font-size:16px">振荡器都有更高的质量和可靠性yle="font-size:16px">,yle="font-family:宋体;font-size:16px">以及几乎无限的容量yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">对于低带宽yle="font-size:16px">PLL,yle="font-family:宋体;font-size:16px">高yle="font-size:16px">Qyle="font-family:宋体;font-size:16px">控制振荡器yle="font-size:16px">(CO)yle="font-family:宋体;font-size:16px">因其低增益而成为首选器件稳定性高yle="font-size:16px">.yle="font-family:宋体;font-size:16px">本文讨论了两种不同的实现方式电压控制振荡器yle="font-size:16px">(yle="color:#ff0000">VCXOyle="font-family:宋体;font-size:16px">yle="color:#ff0000">晶振yle="font-size:16px">)yle="font-family:宋体;font-size:16px">的思路yle="font-size:16px">,yle="font-family:宋体;font-size:16px">基于变容二极管和基于yle="font-size:16px">PLLyle="font-family:宋体;font-size:16px">的yle="font-size:16px">.yle="font-family:宋体;font-size:16px">它还讨论了数字控制振荡器yle="font-size:16px">(DCXO)yle="font-family:宋体;font-size:16px">增加系统设计的灵活性和稳健性考虑到量化的影响yle="font-size:16px">,yle="font-family:宋体;font-size:16px">更新延迟yle="font-size:16px">,yle="font-family:宋体;font-size:16px">和循环过滤器实现循环性能yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-size:16px">1yle="font-family:宋体;font-size:16px">、简介

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">高稳定性受控振荡器yle="font-size:16px">(CO)yle="font-family:宋体;font-size:16px">用于同步或抖动清除用于网络的yle="font-size:16px">PLL,yle="font-family:宋体;font-size:16px">电信yle="font-size:16px">,yle="font-family:宋体;font-size:16px">视频yle="font-size:16px">/yle="font-family:宋体;font-size:16px">音频和仪器应用yle="font-size:16px">.yle="font-family:宋体;font-size:16px">这种yle="font-size:16px">PLLyle="font-family:宋体;font-size:16px">通常具有非常低的带宽yle="font-size:16px">,yle="font-family:宋体;font-size:16px">例如更少超过yle="font-size:16px">1kHz,yle="font-family:宋体;font-size:16px">滤除大部分相位噪声和来自参考输入时钟的抖动yle="font-size:16px">.yle="font-family:宋体;font-size:16px">这些电路使用高yle="font-size:16px">Qyle="font-family:宋体;font-size:16px">机械谐振器实现非常低频率控制增益和高稳定性设计稳定的低带宽yle="font-size:16px">PLLyle="font-family:宋体;font-size:16px">所必需的yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">两个主要的高稳定性受控振荡器如下yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-size:16px">1.yle="font-family:宋体;font-size:16px">基于可牵引的压控振荡器高yle="font-size:16px">Qyle="font-family:宋体;font-size:16px">谐振器yle="font-size:16px">(VCXO)

yle="text-indent: 2em"> yle="font-size:16px">2.yle="font-family:宋体;font-size:16px">基于高yle="font-size:16px">Qyle="font-family:宋体;font-size:16px">值的数字控制振荡器谐振器yle="font-size:16px">(DCXO)

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">多年来电子工业一直使用yle="font-size:16px">DIPyle="font-family:宋体;font-size:16px">通孔封装晶振yle="font-size:16px">,yle="font-family:宋体;font-size:16px">也就是我们所说的带有插脚的插件封装yle="font-size:16px">.yle="font-family:宋体;font-size:16px">引线插件晶体仍然是较受欢迎的封装使用类型yle="font-size:16px">,yle="font-family:宋体;font-size:16px">早期频率控制行业落后于其他电子行业yle="font-size:16px">,yle="font-family:宋体;font-size:16px">但如今很多制造商已经开发出适用的表面贴装yle="font-size:16px">SMDyle="font-family:宋体;font-size:16px">晶振封装yle="font-size:16px">.yle="font-family:宋体;font-size:16px">在应用石英晶体yle="font-size:16px">,yle="font-family:宋体;font-size:16px">贴片晶振时应考虑以下一些因素：

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">通孔晶振：

yle=" text-indent: 2em;"> yle="font-size:16px">1.yle="font-family:宋体;font-size:16px">通常yle="font-size:16px">,yle="font-family:宋体;font-size:16px">组装到印刷电路板是手工操作yle="font-size:16px">.

yle=" text-indent: 2em;"> yle="font-size:16px">2.yle="font-family:宋体;font-size:16px">切割引线时必须小心yle="font-size:16px">,yle="font-family:宋体;font-size:16px">以防止损坏内部的晶体yle="font-size:16px">.

yle=" text-indent: 2em;"> yle="font-size:16px">3.yle="font-family:宋体;font-size:16px">焊接操作必须限制热量yle="font-size:16px">,yle="font-family:宋体;font-size:16px">以防止内部任何焊料回流yle="font-size:16px">.

yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">   每个yle="word-spacing:-1.5px;font-size:16px">Eliteyle="word-spacing:-1.5px;font-family:宋体;font-size:16px">系列都为其目标应用提供了独到的差异化因素yle="word-spacing:-1.5px;font-size:16px">.yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">统一电子是国内有名的进口晶振代理商yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">不仅代理台湾yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">日本进口晶振品牌yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">并且提供优异的欧美晶振yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">包括yle="word-spacing:-1.5px">yle="font-size:16px">SiTimeyle="font-family:宋体;font-size:16px">晶振yle="word-spacing:-1.5px;font-size:16px">,ECSyle="word-spacing:-1.5px;font-family:宋体;font-size:16px">晶振yle="word-spacing:-1.5px;font-size:16px">,CTSyle="word-spacing:-1.5px;font-family:宋体;font-size:16px">晶振等yle="word-spacing:-1.5px;font-size:16px">.yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">下列表格中介绍基于yle="word-spacing:-1.5px;font-size:16px">Eliteyle="word-spacing:-1.5px;font-family:宋体;font-size:16px">系列振荡器产品的关键差异化因素是什么yle="word-spacing:-1.5px;font-size:16px">?

yle="word-spacing:-1.5px;font-size:16px">yle="word-spacing:-1.5px;font-size:16px">   SiTimeyle="word-spacing:-1.5px;font-family:宋体;font-size:16px">是一家yle="word-spacing:-1.5px;font-size:16px">MEMSyle="word-spacing:-1.5px;font-family:宋体;font-size:16px">和模拟半导体公司yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">是基于yle="word-spacing:-1.5px;font-size:16px">MEMSyle="word-spacing:-1.5px;font-family:宋体;font-size:16px">的频率控制解决方案的领导者yle="word-spacing:-1.5px;font-size:16px">.yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">我们结合创新yle="word-spacing:-1.5px;font-size:16px">MEMSyle="word-spacing:-1.5px;font-family:宋体;font-size:16px">和可编程模拟技术凭借我们的系统专业知识yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">突破传统石英晶振产品的局限性提供业界最佳的时序解决方案yle="word-spacing:-1.5px;font-size:16px">.yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">我们的可配置产品提供最稳定的时序yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">使客户能够区分他们的系统具有更高的性能yle="word-spacing:-1.5px;font-size:16px">,yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">更小的尺寸和更好的可靠性yle="word-spacing:-1.5px;font-size:16px">.yle="word-spacing:-1.5px;font-family:宋体;font-size:16px">更多详细yle="word-spacing:-1.5px;font-size:16px">SiTimeyle="word-spacing:-1.5px;font-family:宋体;font-size:16px">晶振资料信息欢迎登入统一官网查看了解yle="word-spacing:-1.5px;font-size:16px">.

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">历史上yle="font-size:16px">,yle="font-family:宋体;font-size:16px">振荡器是由连接到模拟的石英晶体谐振器制成的维持谐振器以特定频率振动的维持电路yle="font-size:16px">.yle="font-family:宋体;font-size:16px">现在yle="font-size:16px">,yle="font-family:宋体;font-size:16px">有一个替代方案yle="font-size:16px">-yle="font-family:宋体;font-size:16px">硅yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">振荡器yle="font-size:16px">-yle="font-family:宋体;font-size:16px">这些器件的性能优于石英晶体振荡器嘈杂的环境yle="font-size:16px">.yle="font-family:宋体;font-size:16px">推动高速电信和移动应用的发展对时钟源的要求更高yle="font-size:16px">.yle="font-family:宋体;font-size:16px">此外yle="font-size:16px">,yle="font-family:宋体;font-size:16px">更复杂的电子设备和更高的时钟频率需要时钟设备在嘈杂的环境中继续表现良好yle="font-size:16px">.yle="font-family:宋体;font-size:16px">本文展示了在石英和石英上进行的对比实验的结果硅yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">振荡器yle="font-size:16px">.yle="font-family:宋体;font-size:16px">数据表明yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">振荡器的性能优于石英现实的环境条件yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">振荡器供应商为每种产品提供数据表yle="font-size:16px">,yle="font-family:宋体;font-size:16px">说明性能参数作为频率稳定性yle="font-size:16px">,yle="font-family:宋体;font-size:16px">抖动和相位噪声yle="font-size:16px">.yle="font-family:宋体;font-size:16px">虽然数据表是一个很好的指标选择定时设备时yle="font-size:16px">,yle="font-family:宋体;font-size:16px">用户还必须评估这些设备在现实生活中的表现环境条件yle="font-size:16px">.yle="font-family:宋体;font-size:16px">在模仿真实操作中看到的条件下进行测试环境提供有关真实组件性能的有价值信息该受到环境压力的振荡器的性能yle="font-size:16px">,yle="font-family:宋体;font-size:16px">如电磁来自电源或其他系统组件的干扰yle="font-size:16px">(EMI),yle="font-family:宋体;font-size:16px">振动和噪声与理想条件下的振荡器相比yle="font-size:16px">,yle="font-family:宋体;font-size:16px">它会降低yle="font-size:16px">.yle="font-family:宋体;font-size:16px">最终yle="font-size:16px">,yle="font-family:宋体;font-size:16px">环境压力可能会降低设备的可靠性和寿命yle="font-size:16px">.yle="font-family:宋体;font-size:16px">考虑性能很重要在选择定时装置时yle="font-size:16px">,yle="font-family:宋体;font-size:16px">在逼真yle="font-size:16px">,yle="font-family:宋体;font-size:16px">嘈杂yle="font-size:16px">,yle="font-family:宋体;font-size:16px">苛刻的条件下振荡器yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-size:16px">1yle="font-family:宋体;font-size:16px">、硅yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">优势

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">硅yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">振荡器与允许它们的石英振荡器相比具有一些固有的优势在各种环境中可靠地运行yle="font-size:16px">.SiTimeyle="font-family:宋体;font-size:16px">开发了yle="font-size:16px">MEMS FirstTMyle="font-family:宋体;font-size:16px">工艺哪些谐振器完全封装在硅中并封闭在微真空室内yle="font-size:16px">[1].yle="font-family:宋体;font-size:16px">谐振器的非常小的质量的组合和其硬硅晶体结构使它们耐用并且极其耐受外部应力yle="font-size:16px">,yle="font-family:宋体;font-size:16px">例如冲击和振动yle="font-size:16px">.yle="font-family:宋体;font-size:16px">此外yle="font-size:16px">,yle="font-family:宋体;font-size:16px">振荡器中优化设计的模拟电路可提供高性能电噪声条件yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">图yle="font-size:16px">1yle="font-family:宋体;font-size:16px">中的yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">振荡器架构示意图显示了关键部件有助于提高性能和可靠性yle="font-size:16px">,yle="font-family:宋体;font-size:16px">包括精细调谐的硅yle="font-size:16px">MEMSyle="font-family:宋体;font-size:16px">谐振器yle="font-size:16px">,yle="font-family:宋体;font-size:16px">振荡器维持电路yle="font-size:16px">,yle="font-family:宋体;font-size:16px">高精度分数yle="font-size:16px">Nyle="font-family:宋体;font-size:16px">锁相环yle="font-size:16px">(PLL)yle="font-family:宋体;font-size:16px">和驱动器带全差分电路yle="font-size:16px">.

yle="font-family: 宋体; font-size: 16px; text-indent: 28px; "> yle="text-indent:2em">Raltronyle="text-indent:2em">晶振公司成立于yle="text-indent:2em">1983yle="text-indent:2em">年yle="text-indent:2em">,yle="text-indent:2em">是全球较受欢迎的石英晶振yle="text-indent:2em">,yle="text-indent:2em">贴片晶振yle="text-indent:2em">,yle="text-indent:2em">压电石英晶体等频率产品制造商之一yle="text-indent:2em">.Raltronyle="text-indent:2em">晶振公司提供高性能的频率控制解决方案yle="text-indent:2em">,yle="text-indent:2em">在价格、质量、应用程序工程和客户支持方面满足和超越客户期望yle="text-indent:2em">.Raltronyle="text-indent:2em">晶振被广泛使用于汽车电子yle="text-indent:2em">,yle="text-indent:2em">智能设备yle="text-indent:2em">,yle="text-indent:2em">等产品中yle="text-indent:2em">.yle="text-indent:2em">以下是拉隆yle="text-indent:2em">7050yle="text-indent:2em">有源晶体器原厂代码yle="text-indent:2em">,yle="text-indent:2em">欢迎收藏选用yle="text-indent:2em">.

yle="font-family: 宋体; font-size: 16px; text-indent: 28px; "> CO4305-25.000-T-TR晶振,C04302-27.000-EXT-T晶振,C04310-32.000-EXT-TR贴片晶振,C04610-80.000-T-TR有源晶振,C04810-20.000MHZ-EXT-TR晶振,CO43025-14.31818-T石英晶体振荡器,CO43025-24.576-T-TR晶振,CO43025S-25.000-EXT-TR贴片晶振,CO43025S-27.000-T-TR- L30有源晶振,CO4305-16.000-EXT-TR石英晶体振荡器,CO4305-20.000-T-TR美国进口晶振,CO4305-22.118M-EXT进口晶振,CO4305-24.000-TR晶振

yle=" text-indent: 2em;"> yle="font-size:16px">1yle="font-family:宋体;font-size:16px">、哪些器件组成了yle="font-size:16px">Eliteyle="font-family:宋体;font-size:16px">的yle="font-size:16px">Super-TCXOyle="font-family:宋体;font-size:16px">系列？

yle=" text-indent: 2em;"> yle="font-size:16px">Elite Super-TCXO晶振yle="font-family:宋体;font-size:16px">系列最初包括具有不同的频率稳定性等级和频率覆盖五个设备yle="font-size:16px">.

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">所有yle="font-size:16px">Elite Super-TCXO晶振yle="font-family:宋体;font-size:16px">都具备卓越的动态性能yle="font-size:16px">,yle="font-family:宋体;font-size:16px">在常见环境危害的条件下提供最稳定的时钟yle="font-size:16px">.yle="font-family:宋体;font-size:16px">此外yle="font-size:16px">,yle="font-family:宋体;font-size:16px">所有的yle="font-size:16px">Elite Super-TCXOyle="font-family:宋体;font-size:16px">在yle="font-size:16px">VC-TCXOyle="font-family:宋体;font-size:16px">操作模式下具有的可程序设计拉动范围可以达到±yle="font-size:16px">6.25ppmyle="font-family:宋体;font-size:16px">、±yle="font-size:16px">12.5ppmyle="font-family:宋体;font-size:16px">与±yle="font-size:16px">25ppm.

yle=" text-indent: 2em;"> yle="font-size:16px">2yle="font-family:宋体;font-size:16px">、为什么称这些器件为yle="font-size:16px">Super-TCXOyle="font-family:宋体;font-size:16px">？

yle=" text-indent: 2em;"> yle="font-family:宋体;font-size:16px">在真实工作条件下yle="font-size:16px">,Super-TCXOyle="font-family:宋体;font-size:16px">具有出色的动态性能yle="font-size:16px">.yle="font-family:宋体;font-size:16px">石英yle="font-size:16px">TCXO振荡器yle="font-family:宋体;font-size:16px">的一个关键问题是不能满足常见环境条件下实际系统的性能规格yle="font-size:16px">.Elite Super-TCXOyle="font-family:宋体;font-size:16px">设计用于在环境危害yle="font-size:16px">,yle="font-family:宋体;font-size:16px">如冲击、振动、气流和嘈杂电源的情况下保持额定性能规格yle="font-size:16px">,yle="font-family:宋体;font-size:16px">如稳定性、相位噪声、抖动和艾伦偏差yle="font-size:16px">.Elite Super-TCXOyle="font-family:宋体;font-size:16px">的动态稳定性有助于在直接影响使用者体验的情况下提供稳定的系统性能yle="font-size:16px">,yle="font-family:宋体;font-size:16px">例如减少手机呼叫掉线yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">统一电子多年来不仅为广大用户提供高可靠性的产品yle="font-size:16px">,yle="font-family:宋体;font-size:16px">并且不定期推出各类石英晶体yle="font-size:16px">,yle="font-family:宋体;font-size:16px">贴片晶振yle="font-size:16px">,yle="font-family:宋体;font-size:16px">以及石英晶体振荡器相关的技术资料yle="font-size:16px">,yle="font-family:宋体;font-size:16px">免费供应广大用户查阅yle="font-size:16px">.yle="font-family:宋体;font-size:16px">以下分析晶体振荡器中的石英晶体电流测量yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">定义：晶体的驱动电平是yle="font-size:16px">ayle="font-family:宋体;font-size:16px">所见功耗的测量值振荡器的放大器电路中的晶体yle="font-size:16px">.yle="font-family:宋体;font-size:16px">驱动器级别以yle="font-size:16px">.yle="font-family:宋体;font-size:16px">表示毫瓦（yle="font-size:16px">mWyle="font-family:宋体;font-size:16px">）或微瓦（μyle="font-size:16px">Wyle="font-family:宋体;font-size:16px">）yle="font-size:16px">.yle="font-family:宋体;font-size:16px">最大功耗通常是由所用石英类型和制造商指定yle="font-size:16px">,yle="font-family:宋体;font-size:16px">具有典型的额定值至yle="font-size:16px">1mWyle="font-family:宋体;font-size:16px">或yle="font-size:16px">2mW.yle="font-family:宋体;font-size:16px">晶体的驱动电平由反馈定义在晶体两侧选择的元件yle="font-size:16px">.

yle="text-indent: 2em"> yle="font-family:宋体;font-size:16px">石英晶体谐振器的机械振动幅度增加与施加的电流成比例yle="font-size:16px">.yle="font-family:宋体;font-size:16px">过度驱动晶体会导致过多长期老化yle="font-size:16px">,yle="font-family:宋体;font-size:16px">输出幅度和频率失真yle="font-size:16px">,yle="font-family:宋体;font-size:16px">或更糟破坏谐振器yle="font-size:16px">.