features ? ? ? refective ? technology ? ? ? surface ? mount?small?outline?leadless? package ? ? ? direct ? replacement?of?hedr-8000? encoder? ? ? ? single?channel? incremental?output ? ? ? two ? channels? quadrature ? outputs? for ? direction ? sensing ? ? ? single?5? v? supply,? ttl ? compatible?output ? ? ? -20c? to?85c? absolute? operating? temperature ? ? ? lead-free ? package ? ? ? encoding ? resolution?options: ? 75,? 150? and? 180? (lines/inch)? or? 2.95,? 5.91,? 7.09? (lines/mm) ? ? ? pcb? height? profle?options: ? 1.0?mm?pcb? thickness?1.5?mm?pcb? thickness ? description by ? introducing ? an? additional? pcb? top-up ? thickness ? at - tached? to ? the? encoder, ? the? aedr-8000? encoder ? series ? could ? easily? solve ? the? height ? issue? in? various ? applica - tions. ? furthermore, ? this? great ? feature ? is? enhanced ? with? the? ofering?of? diferent? height? profle? options.? direct ? replacement ? of? hedr-8000? encoder ? series ? is? now ? possible? with? the? aedr-8000? encoder ? series. ? such? migra - tion? is? always ? simple? and? easy? due? to ? the? perfect ? match - ing? of? the? height ? profles ? as? well ? as? same? footprints ? in? both? encoder? series. the ? aedr-8000? encoder ? series ? employs ? refective ? tech - nology? for ? rotary ? and? linear? movement ? control. ? the ? en - coder ? houses? an? led? light ? source ? and? a? photo-detecting ? circuitry ?in?a?single? package.? in ? adding? on? to ? the? main? features, ? the ? aedr-8000? en - coder ? series ? ofers ? two-channel ? quadrature ? digital ? out - puts? (ttl ? compatible) ? where ? signal ? could ? be? interfaced ? directly ? with? most? of? the? signal ? processing ? circuitries. ? thus, ? its ? bound? to ? reduce ? the? design ? time? of? an? applica - tion. applications the ? aedr-8000? encoder ? series ? provides ? motion? sensing? at ? a? competitive ? price, ? making ? it? ideal? for ? high? volume ? applications. ? its ? small? size ? and? surface ? mount ? package ? make? it? ideal? for ? printers, ? copiers, ? card ? readers ? and? many ? consumer ? products, ? particularly ? where ? space ? and? weight ? are ? design? constraints. note: ? all? specifcations? are? subject? to?change?without? prior? notifcation. aedr-8000 series refective surface mount optical encoder data sheet
2 block diagram of aedr-8000 encoder phase ? error ? ( df ):? the ? deviation ? of? phase, ? in? electrical ? de - grees, ? from?its?ideal? value?of? 90e.? pulse ? width ? (p):? the ? duration ? of? high? state ? of? the? output, ? in? electrical ? degrees, ? within? one? cycle. ? nominally? 180e? or?half?a? cycle.? pulse ? width ? error ? ( d p):? the ? deviation ? of? pulse? width,? in? electrical ? degrees,? from?its?ideal? value?of? 180e. count ? (n):? the ? number? of? window ? and? bar? pairs? per? revo - lution? (cpr) ? of? codewheel. ? for ? linear? codestrip, ? defned? as? the? number? of? window ? and? bar? pairs? per? unit? length? (lines?per?inch?[lpi]?or?lines?per?mm? [lpmm]).? one? cycle ? (c): ? 360? electrical ? degrees ? (e).? equivalent ? to ? one? window?and?bar? pair.?? one? shaft ? rotation: ? 360? mechanical? degrees. ? also ? equiv - alent ? to?n? counts? (codewheel?only).? line? density: ? the ? number? of? window ? and? bar? pairs? per? unit? length,? expressed ? in? either? lines? per? inch? (lpi)? or? lines?per?mm? (lpmm).? optical? radius ? (rop): ? the ? distance ? between ? the? code - wheel? center ? and? the? centerline ? between ? the? two ? domes? of?the? encoder.? gap ? (g): ? the ? distance ? from ? the? surface ? of? the? encoder ? to ? the? surface?of? codewheel?or?? codestrip.? specular? refectance ? (r f ):? the ? amount ? of? incident ? light ? refected ? by ? a? surface. ? quantifed ? in? terms ? of? the? per - centage ? of? incident ? light. ? a? spectrometer ? can? be? used? to ? measure ? specular? refectance ? of? a? surface ? (contact ? fac - tory ? for? more? information). radial ? and? tangential ? misalignment ? error ? (e r ,? e t ):? for ? ro - tary ? motion,? mechanical? displacement ? in? the? radial ? and? tangential ? directions? relative? to?the?nominal? alignment.? angular ? misalignment ? error ? (e a ):? angular ? displacement ? of?the? encoder? relative? to?the? tangential? line.? signal processing circuitry v cc ch a v led gnd ch b gnd r codewheel or codestrip theory of operation the ? aedr? 8000? encoder ? series ? combines ? an? emitter ? and? a? detector ? in? a? single? surface ? mount ? leadless? package. ? when ? used? with? a? codewheel ? or? linear? codestrip, ? the? en - coder ? translates ? rotary ? or? linear? motion? into ? digital ? out - puts. ? as ? seen? in? the? block? diagram, ? the? aedr-8000? en - coder ? series ? consists ? of? three ? major? components: ? a? light ? emitting? diode? (led) ? light ? source, ? a? detector ? ic? consist - ing? photodiodes, ? and? lens? to ? focus ? light ? beam? from ? the? emitter ?as? well?as? light?falling?on?the? detector. the ? operation ? of? the? encoder ? is? based? on? the? principle ? of? optics? where ? the? detector ? photodiodes ? sense? the? absence ? and? presence ? of? light. ? in ? this? case, ? the? rotary/linear ? mo - tion? of? an? object ? being? monitored ? is? converted ? to ? equiv - alent ? light ? pattern ? via? the? use? of? codewheel/codestrip. ? as ? shown ? in? the? above ? diagram, ? the? refective ? area ? (win - dow) ? of? the? codewheel ? (or? codestrip) ? refects ? light ? back? to ? the? photodetector ? ic,? whereas ? no? light ? is? refected ? by ? the? non-refective ? area ? (bar).? an ? alternating ? light ? and? dark ? pattern, ? corresponding ? to ? the? window ? and? bar, ? falls? on? the? photodiodes ? as? the? codewheel ? rotates. ? the ? mov - ing? light ? pattern ? is? exploited ? by ? the? detector ? circuitry ? to ? produce ? digital ? outputs? representing ? the? rotation ? of? the? codewheel. ? when ? the? codewheel ? is? coupled ? to ? a? motor, ? the? encoder ? outputs? are ? then? a? direct ? representation ? of? the? motor ? rotation. ? the ? same? concept ? applies? to ? the? use? of?a? codestrip? to? detect?linear?motion.? defnitions state ? width ? (s):? the ? number? of? electrical ? degrees ? be - tween ? a? transition ? in? channel? a? and? the? neighboring ? transition ? in? channel? b. ? there ? are ? 4? states ? per? cycle, ? each? nominally? 90e. state ? width ? error ? ( d s):? the ? deviation ? of? state ? width,? in? electrical ? degrees,? from?its?ideal? value?of? 90e. phase ? ( f ):? the ? number? of? electrical ? degrees ? between ? the? center ? of? high? state ? of? channel? a? and? the? center ? of? high? state ?of?channel? b.?nominally? 90e.
3 output waveform ch. a all four st a tes (s1 to s4) are maint ained. ch. b s1 p c s2 s3 codewheel rot a tion or linear movement amplitude s4 shaft radial (e r ) t angential (e t ) aedr -8000 codewheel shaft angular (e a ) aedr -8000 codewheel absolute maximum ratings storage ? temperature, ? t s ? -40c? to?85c? operating ? temperature, ? t a ? -20c? to?85c? supply? voltage, ? v cc ? -0.5? v? to?7? v? output ? voltage, ? v o ? -0.5? v? to? v cc ? output ? current?per? channel,?i out ? -1.0?ma? to?8?ma? esd?? human? body? model? jesd22-a114-a?class?2? ? machine ? model? jesd22-a115-a?class?b? notes: 1.? exposure ? to? extreme? light? intensity?(such?as? from?fashbulbs?or? spotlights)? may?cause? permanent?damage? to?the? device. 2.? caution: ? it?is?advised? that? normal? static? precautions?should?be?taken?when?handling?the? encoder?in? order? to? avoid?damage?and/or? degrada - tion? induced? by? esd. 3.? proper ? operation?of?the? encoder?cannot?be? guaranteed?if?the?maximum? ratings? are? exceeded.
4 recommended operating conditions parameter sym. min. typ. max. units notes temperature ?? t a ? 0? 25? 85? c ? ? supply? voltage ? v cc ? 4.5? 5.0? 5.5? v? ripple ? 5 ? recommended codewheel and codestrip characteristics parameter symbol min. max. unit notes window/bar ? ratio? ww/wb ? 0.9? 1.1 window/bar ? length? l w ? 1.80?(0.071)? 2.31?(0.091)? mm?(inches) specular? refectance? r f ? 60? 85? ? refective ? area.? see? note?1. ? ? C? 10? ? nonrefective ? area ? ? ? ? ? ?? 2.95?(75) ? ? aedr-80x0-k ? ? ? ? ? ?? 5.91?(150)? ? aedr-8100-p ? ? ? ? ? ?? 7.09?(180)? ? aedr-8100-q optical? radius? rop ? 11? C? mm? recommended ? value notes: 1.? measurements ? from? tma ? scan? meter.? contact? factory? for? more? information.? 2.? contact ? factory? for? more? information?on? compatibility?of? codewheel/strip.? led current limiting resistor a? resistor ? to ? limit? current ? to ? the? led? is? required. ? the ? recommended ? value ? is? 220? ?? (10? %)? and? the? resistor ? should? be? placed ? in? series ? between ? the? 5? v? supply? and? pin? 3? of? the? device ? (v led ).? this ? will? result ? in? an? led? current ? of? approximately?15?ma. w b w w w w w b l w r op l w
6 package outline drawing 6.2 4.4 top view 3.2 2.7 1.0 1.5 side view (low resolution) side view (high resolution) all dimensions are in millimeters tolerance x.xx 1.5 mm nc gnd ch a v cc v led nc ch b gnd 0.62 1.28 0.64 0.4 1.02 0.4 1.54 0.84 1.62 bottom view
7 encoder orientation the ? aedr-8000? series ? is? designed ? such? that ? both? the? led? and? detector ? ic? should? be? placed ? parallel ? to ? the? window/ bar? orientation, ? as? shown. ? as ? such,? the? encoder ? is? toler - ant ? against? radial ? play ? of? ? 0.38?mm.? the ? emitter ? side? should?be? placed?closer? to?the? rotating? shaft.? mounting consideration direction of codewheel rotation with ? the? emitter ? side? of? the? encoder ? placed ? closer? to ? the? codewheel ? centre, ? channel? a? leads? channel? b? when? the? codewheel ? rotates? anti-clockwise?and? vice? versa.? viewed from top codestrip direction of radial pla y codewheel direction of radial pla y ch. a leads ch. b emitter anti-clockwise ch. b leads ch. a emitter clockwise r op 11.00 mm (0.433 in) < r op < codewheel/codestrip gap
8 recommended lead-free refow soldering temperature profle preheat ? temperature ?40c? to?125c? =?120? sec.?max. temperature ? maintain? above?217c? =?60?C?150? sec. peak ? temperature ? ?? =?255??5c time ? above?250c? ?? =?10?C?20? sec. note: ? due? to? treatment?of?high? temperature,?aedr-8000? transparent? compound?is? expected? to? turn? yellow? after?ir? refow. resolution indicator since ? the? encoder ? is? too ? small? to ? imprint ? resolution ? marking ? on? its? package, ? color-coding ? the? package ? is? em - ployed ? to? diferentiate? resolutions.? the ?details? are: lpi? 75? 150? 180? color ? clear? red ? amber ? 300 250 200 150 100 50 0 1 2 2 4 5 6 6 8 7 108 129 150 171 192 213 235 256 278 299 320 341 363 384 255 c 250 c 217 c 40 c 125 c 10 - 20 sec. 120 sec. max. 60 - 150 sec. time (sec.) hea t up solder p aste dry solder reflow cool dow n tempera ture ( c)
ordering information ? ? ? ? ? ? ? ? ? ? ? ? ? aedr-8 ?? ? ?0 ? ????? ??option ? pcb? thickness ? number?of? packaging ? lines?per? inch? shipping?units ? 0?-?1.5?mm? (low? channels? 1?-? tape ?and? k?-?75?lpi? 0?-?1000?pcs ? ? resolution) ? 1?-?one?channel ? ? reel ? p?-?150?lpi? 1?-?500?pcs ? 1?-?1.0?mm? (high? 0?-? two ?channels ? ? q?-?180?lpi? 2?-?100?pcs ? ? resolution) note: ? encoders? are?packed?in?tape?of? quantity?1000?pcs?or?500?pcs?or?100? pcs. available options resolution shipping units ? ??k?C ?? ??p?C ?? ??q?C ? ????0?C ?? ???1?C ?? ??2?C? ? encoder ? 75?lpi? 150?lpi?? 180?lpi? 1000?pcs? 500?pcs? 100?pcs aedr-8000? * ? ? ? *? *? * aedr-8010? * ? ? ? ? ? * aedr-8100 ? ? * ? ? *? *? * aedr-8100 ? ? ? *? *? *? for product information and a complete list of distributors, please go to our website: www.avagotech.com avago, avago technologies, and the a logo are trademarks of avago technologies limited in the united states and other countries. data subject to change. copyright ? 2006 avago technologies pte. all rights reserved. obsoletes 5989-3067en av02-0971 january 9, 2008
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