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MB88R157A

更新时间: 2024-09-17 07:20:35
品牌 Logo 应用领域
富士通 - FUJITSU 时钟发生器
页数 文件大小 规格书
4页 663K
描述
Spread Spectrum Clock Generator Capable of Freely Setting the Output Clock Frequency

MB88R157A 技术参数

生命周期:Active包装说明:TSSOP,
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.78
JESD-30 代码:R-PDSO-G8长度:4.4 mm
端子数量:8最高工作温度:85 °C
最低工作温度:-20 °C最大输出时钟频率:134 MHz
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
主时钟/晶体标称频率:50 MHz认证状态:Not Qualified
座面最大高度:1.2 mm最大供电电压:3.6 V
最小供电电压:3 V标称供电电压:3.3 V
表面贴装:YES技术:CMOS
温度等级:OTHER端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
宽度:3.1 mmuPs/uCs/外围集成电路类型:CLOCK GENERATOR, OTHER
Base Number Matches:1

MB88R157A 数据手册

 浏览型号MB88R157A的Datasheet PDF文件第2页浏览型号MB88R157A的Datasheet PDF文件第3页浏览型号MB88R157A的Datasheet PDF文件第4页 
MB88R157A  
New Products  
Spread Spectrum Clock Generator  
Capable of Freely Setting the Output  
Clock Frequency  
MB88R157A  
We have added MB88R157A with built-in FRAM to our lineup of spread spectrum  
clock generator (SSCG) products that are effective measures against EMI noise.  
The output frequency can be set at the user,s discretion between 1MHz and 134MHz  
for the input frequency of 10MHz to 50MHz.  
SSCG: Spread Spectrum Clock Generator  
*
*
FRAM: Ferroelectric Random Access Memory (nonvolatile memory utilizing ferroelectric)  
Introduction  
ꢀ OurSSCGꢀcontrolsꢀtheꢀclockꢀfrequencyꢀinꢀanꢀidealꢀfashionꢀ  
byapplyingourproprietarydigitallycontrolled(currentD/Aꢀ  
converter)ꢀ“frequencyꢀmodulationꢀtechnology”ꢀandꢀ“compositeꢀ  
ꢀ Inrecentꢀyears,ꢀelectronicꢀdevicesꢀhaveꢀadoptedꢀhigherꢀ  
performance(speed)andsmallersizes(higherdensity)and,asꢀ  
aresult,theirnoiseemissionhasbeengrowingsteadily.Noiseꢀ  
problemsareoftenthefinalchallengetoovercomepriortotheꢀ  
massproductionofaproductfollowingthetrialanderrorofꢀ  
productdesignandevaluation.Aselectricalsignals(theclockꢀ  
frequencythatoperatesasystem)andnoiseareintrinsicallyꢀ  
thesame,itisimportanttotakenoisecountermeasuresintoꢀ  
considerationꢀatꢀtheꢀboardꢀsystemꢀdesignꢀstageꢀofꢀaꢀproduct.  
ꢀ Thisproductnotonlysimplifiesnoisecountermeasuresbutꢀ  
alsodramaticallyꢀsavesꢀonꢀtheꢀtimeꢀspentꢀdevelopingꢀnoiseꢀ  
countermeasuresꢀlater,ꢀtherebyꢀminimizingꢀtheꢀcostꢀandꢀevaluationꢀ  
time.  
modulationtechnology.Itachievesꢀ 19dB(measurementvaluebyꢀ  
FUJITSU,ꢀ1.5ꢀmodulationꢀdegreeꢀused),ꢀwhichꢀcorrespondsꢀ  
Photo 1 External View  
What is SSCG?  
ꢀ SSCGꢀisꢀaꢀproductꢀthatꢀreducesꢀtheꢀemissionꢀofꢀunnecessaryꢀnoiseꢀ  
byꢀslightlyꢀfluctuatingꢀ(modulating)ꢀtheꢀclockꢀfrequencyꢀthatꢀisꢀtheꢀ  
sourceꢀofꢀnoiseꢀinꢀaꢀrangeꢀthatꢀdoesꢀnotꢀaffectꢀtheꢀsystemꢀoperation.  
2010 No.3  
FIND Vol.28  

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