HCNR200HCNR201线性光耦19页wordWord格式.docx
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HCNR200HCNR201线性光耦19页wordWord格式.docx
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这些成语典故“贮藏”在学生脑中,自然会出口成章,写作时便会随心所欲地“提取”出来,使文章增色添辉。
HCNR200andHCNR201
High-LinearityAnalogOptocouplers
我国古代的读书人,从上学之日起,就日诵不辍,一般在几年内就能识记几千个汉字,熟记几百篇文章,写出的诗文也是字斟句酌,琅琅上口,成为满腹经纶的文人。
为什么在现代化教学的今天,我们念了十几年书的高中毕业生甚至大学生,竟提起作文就头疼,写不出像样的文章呢?
吕叔湘先生早在1978年就尖锐地提出:
“中小学语文教学效果差,中学语文毕业生语文水平低,……十几年上课总时数是9160课时,语文是2749课时,恰好是30%,十年的时间,二千七百多课时,用来学本国语文,却是大多数不过关,岂非咄咄怪事!
”寻根究底,其主要原因就是腹中无物。
特别是写议论文,初中水平以上的学生都知道议论文的“三要素”是论点、论据、论证,也通晓议论文的基本结构:
提出问题――分析问题――解决问题,但真正动起笔来就犯难了。
知道“是这样”,就是讲不出“为什么”。
根本原因还是无“米”下“锅”。
于是便翻开作文集锦之类的书大段抄起来,抄人家的名言警句,抄人家的事例,不参考作文书就很难写出像样的文章。
所以,词汇贫乏、内容空洞、千篇一律便成了中学生作文的通病。
要解决这个问题,不能单在布局谋篇等写作技方面下功夫,必须认识到“死记硬背”的重要性,让学生积累足够的“米”。
DataSheet
Features
•Lownonlinearity:
0.01%
•K3(IPD2/IPD1)transfergainHCNR200:
±
15%HCNR201:
5%
•Lowgaintemperaturecoefficient:
65 ppm/°
C
•Widebandwidth–DCto>
1MHz
•Worldwidesafetyapproval– UL1577recognized(5kVrms/1minrating)– CSAapproved– IEC/EN/DINEN60747-5-2approvedVIORM=1414Vpeak(option#050)
•Surfacemountoptionavailable(Option#300)
•8-PinDIPpackage-0.400”spacing
•Allowsflexiblecircuitdesign
Applications
•Lowcostanalogisolation
•Telecom:
Modem,PBX
•Industrialprocesscontrol:
TransducerisolatorIsolatorforthermocouples4 mAto20mAloopisolation
•SMPSfeedbackloop,SMPSfeedforward
•Monitormotorsupplyvoltage
•Medical
Description
TheHCNR200/201high-linearityanalogoptocouplerconsistsofahigh-performanceAlGaAsLEDthatilluminatestwocloselymatchedphotodiodes.Theinputphotodiodecanbeusedtomonitor,andthereforestabilize,thelightoutputoftheLED.Asaresult,thenon-linearityanddriftcharacteristicsoftheLEDcanbevirtuallyeliminated.TheoutputphotodiodeproducesaphotocurrentthatislinearlyrelatedtothelightoutputoftheLED.Theclosematchingofthephoto-diodesandadvanceddesignofthepackageensurethehighlinearityandstablegaincharacteristicsoftheoptocoupler.
TheHCNR200/201canbeusedtoisolateanalogsignalsinawidevarietyofapplicationsthatrequiregoodstability,linearity,bandwidthandlowcost.TheHCNR200/201isveryflexibleand,byappropriatedesignoftheapplicationcircuit,iscapableofoperatinginmanydifferentmodes,including:
unipolar/bipolar,ac/dcandinverting/non-inverting.TheHCNR200/201isanexcellentsolutionformanyanalogisolationproblems.
Schematic
CAUTION:
Itisadvisedthatnormalstaticprecautionsbetakeninhandlingandassemblyofthiscomponenttopreventdamageand/ordegradationwhichmaybeinducedbyESD.
OrderingInformation
HCNR200/HCNR201isULRecognizedwith5000Vrmsfor1minuteperUL1577.
PartRoHSnonRoHSSurfaceGullTapeUL5000Vrms/60747-5-2NumberCompliantCompliantPackageMountWing&
Reel1MinuteratingVIORM=1414VpeakQuantity
-000Enooption400milX42pertube
-300E#300WidebodyXXX42pertube
HCNR200-500E#500DIP-8XXXX750perreel
HCNR201-050E#050XX42pertube
-350E#350XXXX42pertube
-550E#550XXXXX750perreel
Toorder,chooseapartnumberfromthepartnumbercolumnandcombinewiththedesiredoptionfromtheoptioncolumntoformanorderentry.
Example1:
HCNR200-550EtoorderproductofGullWingSurfaceMountpackageinTapeandReelpackagingwithIEC/EN/DINEN60747-5-2VIORM=1414VpeakSafetyApprovalandUL5000Vrmsfor1minuteratingandRoHScompliant.Example2:
HCNR201toorderproductof8-PinWidebodyDIPpackageinTubepackagingwithUL5000Vrmsfor1minuteratingandnonRoHScompliant.
Optiondatasheetsareavailable.ContactyourAvagosalesrepresentativeorauthorizeddistributorforinformation.
Remarks:
Thenotation‘#XXX’isusedforexistingproducts,while(new)productslaunchedsinceJuly15,2019andRoHScompliantwilluse‘–XXXE.’
PackageOutlineDrawings
Figure1.
GullWingSurfaceMountOption#300
SolderReflowTemperatureProfile
RecommendedPb-FreeIRProfile
RegulatoryInformation
TheHCNR200/201optocouplerfeaturesa0.400”wide,eightpinDIPpackage.Thispackagewasspecificallydesignedtomeetworldwideregulatoryrequirements.TheHCNR200/201hasbeenapprovedbythefollowingorganizations:
UL
RecognizedunderUL1577,ComponentRecognitionProgram,FILEE55361
CSAApprovedunderCSAComponentAcceptanceNotice#5,FileCA88324
IEC/EN/DINEN60747-5-2
ApprovedunderIEC60747-5-2:
2019+A1:
2019EN60747-5-2:
2019+A
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