heds-973x series small optical encoder modules data sheet esd warning: normal handling precautions should be taken to avoid static discharge. description thef heds-973xf seriesf isf af highf performance,f lowf cost,f opticalf incrementalf encoderf module.f whenf operatedf inf conjunctionf withf eitherf af codewheelf orf codestrip,f thisf modulef detectsf rotaryf orf linearf position.f thef modulef consistsfoffaflensedfledfsourcefandfafdetectorficfenclosedf infafsmallfc-shapedfplasticfpackage.fdueftofafhighlyfcolli - matedflightfsourcefandfafuniquefphot o detectorfarray,fthef modulefisfextremelyftolerantftofmountingfmisalignment. package dimensions mounting option #50 - standard (baseplane mounting) features ? smallfsize ? lowfcost ? multiplefmountingfoptions ? widefresolutionfrange ? linearfandfrotaryfoptionsfavailable ? nofsignalfadjustmentfrequired ? insensitiveftofradialfandfaxialfplay ? - 40cftof+85cfoperatingftemperature ? highfresolutionfversionfoffthefheds-970x ? twofchannelfquadraturefoutput ? ttlfcompatible ? singlef5fvfsupply ? wavefsolderable 5.5 0.217 2x ? (optical center) r pin 1 identifier h97x0 : : 8 8 t x 50 ch b v cc ch a gnd dimensions are millimeters inches lead thickness: 0.25 0.010 lead thickness 0.25 mm lead pitch 2.54 mm 0.50 0.020 03.8 0.150 6.40 0.252 1.4 0.055 0.14 0.006 7.5 0.295 10.1 0.398 5.0 0.198 2.00 0.079 3.9 0.152 1.4 0.055 20.2 0.795 15.0 0.591 7.0 0.276 12.6 0.496 1.7 0.067 3.9 0.154 4.2 0.167 0.8 0.031 3.0 0.118 10.8 0.425 9.8 0.386 1.8 0.071 contact factory for detailed package dimensions
asfseenfinfthefbloc k fdiagram,fthefmodulefcontainsfafsinglef lightfemittingfdiodef(led)fasfitsflightfsource.ftheflightfisf collimatedfintofafparallelfbeamfbyfmeansfoffafsingleflensf locatedfdirectlyfoverfthefled.foppositefthefemitterfisfthef integratedf detectorf circuit.f thisf icf consistsf off multiplef setsfoffphotodetectorsfandfthefsignalfprocessingfcircuitryf necessaryftofproducefthefdigitalfwaveforms. thefcodewheel/codestripfmovesfbetweenfthefemitterfandf detector,fcausingftheflightfbeamftofbefinte r ruptedfbyfthef patternf off spacesf andf barsf onf thef codewheel/cod e strip.f thef photodiodesf whichf detectf thesef interruptionsf aref arrangedfinfafpatternfthatfcorr e spondsftofthefradiusfandf countfdensityfoffthefcodewheel/cod e strip.fthesefdetectorsf aref alsof spacedf suchf thatf af lightf periodf onf onef pairf off detectorsf correspondsf tof af dar k f periodf onf thef adjacentf pairfoffdetectors.fthefphotodiodefoutputsfareffedfthroughf thef signalf processingf circuitry.ftwof co m paratorsf receivef thesefsignalsfandfproduceftheffnalfoutputsfforfchannelsf af andf b.f duef tof thisf integratedf phasingf technique,f thef digitalfoutputfoffchannelfafisfinfquadraturefwithfchannelf bf(90fdegreesfoutfoffphase). block diagram theftwofchannelfdigitalfoutputsfandf5fvfsupplyfinputfaref accessedfthroughffourfsolder-platedfleadsflocatedfonf .54f mmf(0.1finch)fcenters. thef standardf heds-973xf isf designedf forf usef withf anf 11f mmf opticalf radiusf codewheel,f orf linearf codestrip.f otherf optionsfarefavailable.fpleasefcontactffactoryfforfmorefin - formation. applications thefheds-973xfprovidesfsophist i catedfmotionfdetectionf atfaflowfcost,fma k ingfclosed-loopfcontrolfveryfcost-com - petitive!f typicalf applicationsf includef printers,f plotters,f copiers,fandfofcefautomationfequipment. note:f avagof technologiesf encodersf aref notf recommendedf forf usef inf safetyfcriticalfapplications.feg.fabsfbra k ingfsystems,fpowerfsteering,flifef supportf systemsf andf criticalf caref medicalf equipment.f pleasef contactf salesfrepresentativefiffmorefclarifcationfisfneeded. theory of operation thef heds-973xf isf af c-shapedf emitter/detectorf module.f coupledfwithfafcodewheel,fitftranslatesfrotaryfmotionfintof aftwo-channelfdigitalfoutput.fcoupledfwithfafcodestrip,fitf translatesflinearfmotionfintofafdigitalfoutput.
3 output waveforms defnitions countf(n)f=fthefnumberfoffbarfandfwindowfpairsforfcountsf perfrevolutionf(cpr)foffthefcodewheel,forfthefnumberfoff linesfperfinchfoffthefcodestripf(lpi). 1fshaftfrotation f =f 360fmechanicalfdegrees f =ff nfcycles 1fcyclef(c)f f =f 360felectricalfdegreesf(e) f =f 1fbarfandfwindowfpair pulsefwidthf(p):fthefnumberfoffelectricalfdegreesfthatfanf outputf isf highf duringf onef cycle.fthisf valuef isf nominallyf 180eforf1/ fcycle. pulsefwidthferrorf( p):fthefdeviation,finfelectricalfdegrees,f offthefpulsefwidthffromfitsfidealfvaluefoff180e. statefwidthf(s):fthefnumberfoffelectricalfdegreesfbetweenf aftransitionfinfthefoutputfoffchannelfafandfthefneighbor - ingftransitionfinfthefoutputfoffchannelfb.ftherefaref4fstatesf perfcycle,feachfnominallyf90e. statefwidthferrorf( s):fthefdeviation,finfelectricalfdegrees,f offeachfstatefwidthffromfitsfidealfvaluefoff90e. phasef( ):fthefnumberfoffelectr i calfdegreesfbetweenfthef centerfoffthefhighfstatefoffchannelfafandfthefcenterfoffthef highf statef off channelf b.fthisf valuef isf nominallyf 90ef forf quadraturefoutput. phaseferrorf( ? ):fthefdeviationfoffthefphaseffromfitsfidealf valuefoff90e. directionf off rotation:f whenf thef codewheelf rotatesf counterclockwise,fasfviewedfloo k ingfdownfonfthefmodulef (softhefmar k ingfisfvisible),fchannelfafwillfleadfchannelfb.fiff thefcodewheelfrotatesfinfthefoppositefdirection,fchannelf bfwillfleadfchannelfa. opticalfradiusf(rop):fthefdistanceffromfthefcodewheelsf centerf off rotationf tof thef opticalf centerf (o.c.)f off thef encoderfmodule. angularf misalignmentf errorf (e a ):f angularf misalignmentf offthefsensorfinfrelationftoftheftangentialfdirection.fthisf appliesfforfbothfrotaryfandflinearfmotion. mountingfpositionf(r m ):fdistanceffromfmotorfshaftfcenterf offrotationftofcenterfoffalignmentftabfreceivingfhole.
4 electrical characteristics electricalfcharacteristicsfoverfrecommendedfoperatingfrange,ftypicalfatf 5c. parameter symbol min. typ. max. units notes supplyfcurrentf i cc f 17f 40f maf optionfaf&fqf 57f 85f f allfotherfoptions highflevelfoutputfvoltagef v ohf .4f vf i oh f=f-00f af lowflevelfoutputfvoltagef v olf 0.4f vf i ol f=f3.86fmaf riseftimef t r f 180f nsf c l f=f 5fpf,f f r l f=f3.3fk fpull-upf fallftimef t f f 40f nsf absolute maximum ratings parameter symbol min. max. units notes storageftemperaturef t s f -40f f 85f cf optionfaf&fqf 70f allfotherfoptions operatingftemperaturef t a f -40f f 85f cf optionfaf&fqf 70 allfotherfoptions supplyfvoltagef v ccf -0.5f 7f vf outputfvoltagef v of -0.5f v cc f vf outputfcurrentfperfchannelf i o f -1.0f 5f maf solderingftemperaturef 60f cf tff5fsec.f recommended operating conditions parameter symbol min. typ. max. units notes temperaturef tf -40 85f c optionfaf&fqf 70 allfotherfoptions supplyfvoltagef v cc f 4.5f 5.0f 5.5f vf ripplef 5 encoding characteristics encodingf characteristicsf overf recommendedf operatingf conditionf andf recommendedf mountingf tolerances.f thesef characteristicsfdofnotfincludefcodewheel/codestripfcontribution.ftheftypicalfvaluesfarefaveragesfoverftheffullfrotationf offthefcodewheel.fforfoperationfabovef40f k hz,fseeffrequencyfderatingfcurves. parameter symbol typical maximum units pulsefwidthferrorf pf 5f 45f ef logicfstatefwidthferrorf sf 3f 45f ef phaseferrorf ? f f 15f ef note:f3.3f k fpull-upfresistorsfusedfonfallfencoderfmodulefoutputs. frequency derating curves typicalfperformancefoverfextendedfoperatingfrange.fthesefcurvesfwerefderivedfusingfaf 5fpffloadfwithfaf3.3 fk fpull-upf resistor.fgreaterfloadfcapacitancesfwillfcausefmoreferrorfthanfshownfinfthesefgraphs. a change in state width error (electrical degrees) 0 200 0 -15 100 -10 -5 50 150 -40 c +25 c +85 c change in pulse width error (electrical degrees) 0 200 15 -5 frequency (khz) frequency (khz) 5 100 0 10 50 150 -40 c +25 c +85 c b
6 recommended codewheel and codestrip characteristics optional packages available parameter symbol min. max. units notes window/barfratiof ww/wbf 0.7f 1.4f windowflengthf(rotary)f lwf 1.80f f (0.071)f .30f f (0.091)f mmf f (inch)f absolutefmaximumf f codewheelfradiusf(rotary)f rcf ropf+f3.40f f (ropf+f0.134)f mmf f (inch)f includesfeccenCftricityferrorsf centerfoffpostftofinsidef f edgefoffwindowf w1f 1.04f f (0.041)f mmf f (inch)f centerfoffpostftofoutsidef f edgefoffwindowf wf 0.76f f (0.030)f mmf f (inch)f centerfoffpostftofinsidef f edgefoffcodestripf lf 3.60f f (0.14)f mmf f (inch)f mounting option #51 C screwmount (baseplane mounting) 5.5 0.217 2x ? (optical center) ? pin 1 identifier h97x0 : : 8 8 t x 51 ch b v cc ch a gnd dimensions are millimeters inches lead thickness: 0.25 0.010 0.50 0.020 3.8 0.150 6.40 0.252 2.8 0.110 0.14 0.006 7.5 0.295 10.1 0.398 2.00 0.079 3.9 0.152 4.34 0.171 20.2 0.795 15.0 0.591 7.0 0.276 12.6 0.496 1.7 0.067 3.9 0.154 4.2 0.167 0.8 0.031 3.0 0.118 10.8 0.425 9.8 0.386 1.8 0.071
7 optional packages available (contd.) mounting option #53 C standard with posts (baseplane mounting) mounting option #52 C backplane (backplane mounting)
8 mounting option #54 C tabless (baseplane mounting) mounting option #55 C backplane with posts (backplane mounting) optional packages available (contd.)
9 forflinearfmotion,fangularfmisalignment,fea,fmustfbefff fdegreesftofachievefencodingfcharacteristics. allfdimensionsfforfmountingfthefmodulefandfcodestripfshouldfbefmeasuredfwithfrespectftoftheftwofmountingfposts,fshownfabove. recommendedfscrewfsize:fm .5fxf0.45forf-56 mounting considerations bent lead option e a
10 recommended wave solder conditions flux fCfrmafwaterfsolublef(perfmil-f-14 56d) process parameters 1.f flux .f pre-heatf60fsecondsftotal f nominalfpreheatftemp:f90c f min:f85c f max:f110c 3.f solderfpotfzone f nominalfdipfinftime:f f f f f f .5f-f4.5fseconds f min:f .5fsecondsf f max:f5fseconds f pcbftopfside:f140f-160c f pcbfbottomfside:f 40f-f60c 4.f wavefsolderf 55c,f1. fmeters/minuteflinefspeed 5.f hotfwaterfwash f 1st:f30cf45fseconds f nd:f70cf90fseconds 6.f rinse f 1st:f 3cf45fseconds f nd:f 3cf45fseconds 7.f dry f 1st:f80cf105fseconds f nd:f95cf105fseconds
for product information and a complete list of distributors, please go to our web site: www.avagotech.com avago, avago technologies, and the a logo are trademarks of avago technologies in the united states and other countries. data subject to change. copyright ? 2005-2009 avago technologies. all rights reserved. obsoletes 5988-8044en av02-1747en - january 19, 2009 ordering information note:fpleasefcontactffactoryfforfcodewheelfandfcodestripfinformation. heds-973 lead bend 0fCfstraightfleads 1fCfbentfleads fCfstraightfleads 3fCfbentfleads resolution options af Cf500fcpr,f11fmmfrop bff Cf1000fcpr,f11fmmfrop jff Cf10 4fcpr,f11fmmfrop qf Cf180flpi,flinear f Cf f300flpi,flinear 1f Cf f360flpi,flinear tfCf000fcpr,f 3.36fmmfrop ufCf048fcpr,f 3.36fmmfrop mounting options 50fCfstandard 51fCfscrewmount 5fCfback plane 53fCfstandardfw/posts 54fCftabless 55fCfback planefw/posts option 50 51 52 53 54 55 heds-9730f af *f *f qf *f *f f *f 1f bf jf heds-9731f af *f qf *f f *f *f *f *f *f *f 1f *f *f *f *f *f *f bf *f *f *f *f *f *f jf *f *f *f *f *f *f heds-973 /33f tf *f *f *f *f *f *f uf *f *f *f *f *f *f
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