一文让你掌握晶振性能的关键因素
晶振主要起到为芯片提供精准时钟信号的作用,晶振作为芯片的“心脏”,在振荡电路中起到不可替代的作用。那么晶振的基本参数包括哪些呢?晶振厂商应达利带您一起看看。
图 1
一、晶振可以分为无源晶振和有源晶振,首先是无源晶振(晶体谐振器)的参数:
需求方提出的基本参数要求:
●标称频率:Frequency
●负载电容:CL
●等效阻抗:Rr(ohms)
●频率温度特性:TC(Relative to 25℃)
●其它要求:工作温度范围、C0、C1等
需要由供方控制的参数:
●频率精度:FL or FR(ppm)
●等效电阻:Rr(ohms)
●静态电容:C0(pF)
●动态电容:C1(fF)
●等效电感:L(mH)
●品质因数:Q(k)
●牵引能力:TS(ppm /pF)
●驱动功率依赖性:DLD
●頻率温度特性:TC(Relative to to 25℃)
二、有源晶振(晶体振荡器)的参数:
●常温频率偏差(Frequency Tolerance)
晶体振荡器(基准条件下)输出频率与标准频率的偏差。如+/-25PPM…
●频率温度偏差(Frequency Stability)
晶体振荡器在工作温度内频率的变化。如+25PPM、+/-30PPM..
●频率总偏差(Overall Stability)
在规定的工作条件范围内允许的频率偏差。频率总偏差包括频率偏差,频率温度偏差,电压频率变化,负载变化,老化等。
频率稳定度要求±20ppm或以上的应用,晶体振荡器;
频率稳定度要求±0.5至±10ppm的应用,TCXO;
频率稳定度要求±1ppm或以下的应用,OCXO。
●电源和负载
晶体振荡器的频率受电源电压变动,和负载变动的影响。
额定的电压有:3.3V+/-10%或5V+/-10%,1.8V+/-5%,2.8V+/5%等,CMOS输出额定的负载为15pF。
●输出波形
晶体振荡器有CMOS、TTL、PECL、LVPECL、LVDS、HCSL
测量仪器包含频率计,示波器等。
应达利电子集团于1995年在深圳成立,专业研发生产销售石英晶体谐振器、振荡器。晶振尺寸小至1.2X1.0mm,频率范围32.768KHz ~200MH,包含无源晶体、热敏晶体、32.768KHz音叉晶体、温补钟振TCXO、压控钟振VCXO、差分振荡器等,广泛应用于5G、智能家居、消费电子、汽车电子(符合AEC-Q200)、通讯产业、医疗电子、安防行业、工业设备等行业。
公司工厂面积超过40,000平米,年产能超过1,000,000,000颗,已通过ISO 9001、IATF 16949、ISO 14001体系认证,拥有超53项发明专利和实用新型专利。产品远销欧美、亚太等地区,销售办事处遍布北京、重庆、苏州、福州、深圳、香港、台湾。
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本文由三年不鸣转载自应达利,原文标题为:【科普】晶振都有哪些参数?一文让你掌握晶振性能的关键因素,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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【选型】晶光华(JGHC)贴片有源晶振 & 贴片无源晶振(物料型号对照表)选型指南
目录- 有源晶振/无源晶振
型号- S3227000121040,49SAC18080162060,S2126000121080,Y20600327122075,49SAC07600202060,S2232000091050JY,O32125000153325,S5325000201040,M49SAT08000201080,SMD2520,S32080001220500,G53080000850100A,GLASS5032,49SAT04000201080JY,O5326000153325,S2100327121090,49ASC28800202040,S3230000201040,49SAC25000182040,S5327000202040,MC30600327122050,S3224000151060,S3228375201060,O7540000153325,S3227000201040,49ASC60350202040,49SAT25000201040JY,S5312000201080,S53080001510100A,S3240000121060,G53080000830100A,OSC2016,49SAC24000201040,49SBT06745201060,O5316000153325,OSC3225,S3224000151050,49SBT12000181060,M49SAT24000121060,O7512000153325,HC-49S,49SAC16000201060,S3224000121060A,O2200327153325,G5308000201080,49SAC035792020100,49ASC27138152040,O7520000153325,S3224000121060,S2224000121060JY,S5313253201060,O3200327151825,49SAT26000201040JY,G3216000183080,SMD3100327122090,S2224000091060JY,G3212288121080,O5300327153325,O5308000153325,49SAC04096202080,HC-49SMD,S2132000101080,O7527000153325,49SAC04194202080,S5312000202080A,O7512288153325,49SAC16934182060,S3212000121080,O22088001533100,49ASC27000182040,49SBT33868201040,O7550000153325,S32300000651040,S2132000121080,S5319687141040A,S3224000061050,49SAC22118202040,49SBT04000201080,S5313560152040A,S3212000201080,S3232000081040,49ASC26000202040,P7426000091040,S712000201040,49SAC08000202060,O7525000153325,O2100327153325,49SAC24000122040,O3225000153325,S3225000121060,49SAT08000201060,S3216000121060,S2240000101050JY,S32120002010100A,O3237125153325,J3224000091080,49SAC26000152040,49SAC16000222060,49SAT13560161050JY,O3216000153325,HC-49SSMD,O7524000153325,TCO22260002805,Y20600327122040,O5340000153325,S2140000091070JY,49SAC25000122040,S2227120101080,G3232000121060A,O3212288153325,49SAC24545082040JY,O3226000153325,S2132000091080,S5340659081540,49SAC10000201060,S2226000071060,S3224000201060,S3213000201060JY,49SAC27000182040,49SAC20000202040,S2219200121080,PFP7040,49ASC50000201040,O5324000153325,S5318080141040A,49SAC036862020100,O3240000153330JY,S3230000201060,49SBT25000181040,TCXO2520,G3226000161060,O3248000153325,S3237400201040JY,S3226000091060,S3219200071060,S3240000121040,S2240000101050,49ASC40233202030,G3224000102060,TSX22260000781040,S5348000202040,OSC7050,SMD3225,SMD2016,O75100000153325,O2224000153325,S3214318201060,S3227000181040,MC14600327122090,49SAC06745202060,S3250000121060,O3240000153325,S3240000101040,O75125000153325,49SAC36480122040,S724000101030,J3225000121080,S2216000091080,O7502048153325,O5324576153325,S22160000910100JY,O5320000153325,M49SAT26000091060,S3232000091040,49SAC10000132060,S3213253202070,S2132000091070JY,49SAC25000201040,S2226000120860,O5312288153325,S3230000101040,SMD3100327092090,O32540001533525,O2227000153325,Y30800327122075,49SAT14318201060,O3204000153325,SMD6035,49SAC08000182060,49SAC20500202040,O3227000153325,O3200327153320JY,49SAC21250182040,S3212000181080,O3233330153325,49SAC260000852040,O5310000153325,S2226000091060JY,O3232000153325,S3226000081040,49ASC27120102040,S720000202040,O3250000153325,O2250000153325,S2126000091080,G5308000123080,S5324000201040,G3232000121050,S2100327072090,O5327000153325,O5312000153325,S5308000201080,S2225000181060,O2220000153325,O3218432153325,O7508000153325,O22072001533100,S3213560201060,S2124000121080JY,O3220000153325,S3216000091060,S3237400121040,49SAC17950162060,OSC2520,49SBT04904201060,49SAC06000202060,49SBT26000151040,49SAC12000202060,S3224000121060JY,O7533000153325,O75125000LD3320,O7511059153325,S3220000181060,O2224576153325,O5325000153325,49SAC08000163060,49ASC32768202030,S3224576202040,S2250000091050,S3225000151040,49SAC08192202060,M49SAT16000091060,O3206000153325,O2212000153325,S32080002010500,O3224576153325,TSX2226000091040,O3212000153325,49SBT24000181040,S2226000081060,S3219200101060,S3226000121060,O5350000153325,49SAT04000201080,SMD5032,S3224576121060,49SAC13560101060,G3225000201060,S5308000222080,S5308704223080,S5313526142040A,S3212000101080,O2225000153325,O2237125153325,S5313526141060,49SAC11059202060,HC-49SBSMD,S3216000091060JY,TSX2226000071040,Y20624000202050JY,M49SAT12000121060,4SSAC27000202040,49SAC04897202080,S3240000091040JY,49SAC13560201060,S3225000201060,TCO22384001805,S6316000202040,49SAC04000202080,49SAC13598102060,M49SAT27000201060,49SAC16934202060,49SAC08000FS2060,S3232000121040,S2132000081070JY,G3236864062050,J3220000181080,O7524576153325,S2125000101080,S21160000910120JY,S3226000071060,S3218080141080A,S3240000151040,M49SSMD,49SAC27000202030JY,G3226000071060,S3240000101060JY,S2216000121080,49SAC16000182060,O3227000153320JY,49ASC27125202040,S3226000091040JY,G3225000101560A,49SAC14745202060,O7548000153325,S5327000181040,O2248000153325,49SAC16000202060,S3227141201060A,S2240000091050JY,O3230000153325,O32100000153325,O7510000153325,O3224000153325,49SAC20480202040,OSC5032,S3216000201060,G3236864062060A,S2126000091080JY,O5348000153325,49SAC25000202040
应达利26MHz无源晶振SMCE3225,仅消耗大约180kHz的带宽,可完美应用于NB-IoT模块中
应达利晶振SMCE3225为表贴缝焊式陶瓷封装石英晶体谐振器,其尺寸参数为3.2mm×2.5mm,尺寸小巧,符合RoHS标准且无铅,具备高可靠性、频率范围广的优质特性,可完美应用于NB-IoT模块中。
【解析】晶振的ppm值以及计算方式
电路中常见的晶振分为有源晶振(即石英晶体振荡器)和无源晶振(即石英晶体谐振器),它是一种应用在许多电子设备中时钟信号源。本文中浩都频率将为大家解析晶振的ppm值以及计算方式。
PC电脑都用到哪些晶振?
尽管上半年全球PC电脑市场行情不景气,然而2023年第三季度全球电脑出货量迎来了环比增长,IDC等机构纷纷预测,随着PC去库存化,且微软将在2025年10月14日结束对Windows 10系统的支持,AI PC的需求,这都将刺激PC的后续增长。那么PC电脑都会用到哪些晶振呢? 电脑常用的晶振解决方案: Ÿ 32.768kHz晶振:主要用于实时时钟(RTC)模块,用于计算机系统的时间管理。
40MHz高精度10ppm无源晶振SMCE3225,工作温度范围-40℃~+125℃,适用于汽车毫米波雷达
应达利晶振SMCE3225为表贴缝焊式陶瓷封装石英晶体谐振器,其尺寸参数为3.2mm×2.5mm,尺寸小巧,符合RoHS标准且无铅,具备高可靠性、频率范围广的优质特性,满足毫米波雷达应用的全部要求。
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