Nekuwedzera kweakaunganidzwa wedunhu kuburitsa switching kumhanya uye Pcb bhodhi density, Signal Kutendeseka yave imwe yenyaya dzinofanirwa kuve nehanya nepamusoro-kumhanya dijitari PCB dhizaini. Iyo parameter yezvinhu uye pcb board, kurongedzwa kwezvinhu zvePCBboard, iyo wiring yeiyo-yekumhanyisa Signal mutsara uye zvimwe zvinhu, Inogona kukonzera matambudziko nekuvimbika kwechiratidzo.

Kune marongero ePBB, chiratidzo chekuvimbika chinoda bhodhi dhizaini isingakanganise chiratidzo chenguva kana magetsi, nepo kune wedunhu wiring, chiratidzo chekuvimbika chinoda kugumisa zvinhu, marongero ehurongwa, uye wiring ruzivo. Yakakwira chiratidzo kumhanya pane pcb, kuiswa zvisirizvo kwemagumo, kana wiring isiriyo yemasaini-ekumhanyisa masaini kunogona kukonzera matambudziko ekuvimbika, izvo zvinogona kukonzeresa kuti system iburitse data risiri iro, dunhu rinoshanda zvisirizvo kana kusashanda zvachose. Maitiro ekutora chiratidzo kutendeka mukufunga kwakazara uye kutora anoshanda ekudzora matanho muPCB dhizaini rave musoro unopisa muPCB dhizaini indasitiri.

Signal kuvimbika Dambudziko Rakanaka chiratidzo kutendeseka zvinoreva kuti chiratidzo chinogona kupindura neyakakodzera nguva uye nemagetsi mwero hunhu kana zvichidikanwa. Sezvineiwo, kana chiratidzo chikasapindura nemazvo, pane chiratidzo chekutendeseka dambudziko. Matambudziko ekutendeseka kwechiratidzo anogona kutungamirira kune kana kutungamirira zvakananga kukukanganiswa kwechiratidzo, kukanganisa nguva, data isiriyo, kero uye mitsara yekudzora, uye system misoperation, kana kunyange kuparara kwehurongwa. Mukuita kwePCB dhizaini dhizaini, vanhu vakaunganidza yakawanda PCB dhizaini mitemo. Mukugadzirwa kwePBB, chiratidzo chePBB chinogona kuve zvirinani nekunyatso tarisa kune aya magadzirirwo mitemo.

Paunenge uchigadzira PCB, isu tinofanira kutanga tanzwisisa ruzivo rwekugadzira rwese redunhu bhodhi, iro rinonyanya kusanganisira:

1. Kuwanda kwemidziyo, saizi yedhizaini, chipakeji, chip chiyero, ingave PCB yakakamurwa kuita yakaderera kumhanya, yepakati kumhanya uye yekumhanya nzvimbo, inova iyo yekuisa interface uye yekubuda nzvimbo;

2.Zvese zvimiro zvekumisikidzwa, dhizaini dhizaini nzvimbo, kunyangwe paine chakakwira simba chishandiso, chip mudziyo kupisa kupisa kudzora kwakakosha zvinodiwa;

3. Rudzi rwechiratidzo chemutsara, kukurumidza uye kutungamira kwekufambisa, impedance yekudzora zvinodiwa zvechiratidzo mutsara, bhasi rinomhanya kutungamira uye mamiriro ekutyaira, masaini akakosha uye matanho ekudzivirira;

4. Rudzi rwemagetsi, mhando yepasi, ruzha rwekushivirira zvinodiwa kune magetsi uye pasi, kumisikidza uye kupatsanurwa kwesimba magetsi uye pasi ndege;

5. Mhando uye zviyero zvemaraini ewachi, sosi uye kutungamira kwewara mitsara, wachi kunonoka zvinodiwa, zvakarebesa mutsetse zvinodiwa.

Pcb akaturikidzana design

Mushure mekunzwisisa ruzivo rwekutanga rwebhodhi redunhu, zvinodikanwa kuyera zvinodiwa zvekugadzira zvemutengo webhodhi redunhu uye kutendeseka kwechiratidzo, uye sarudza nhamba inonzwisisika ye wiring layer. Parizvino, bhodhi redunhu rakagadziridzwa zvishoma nezvishoma kubva kune imwechete layer, kaviri layer uye mana layer kusvika kune akawanda-layer redunhu bhodhi. Multi-rukoko pcb dhizaini inogona kunatsiridza iro remberi pamusoro pechiratidzo mugwagwa uye nekupa yekudzokera shure nzira yechiratidzo, inova ndiyo huru chiyero chekuwana yakanaka chiratidzo kutendeka. Paunenge uchigadzira pcb yekuisa, tevera inotevera mitemo:

1. Ndege yereferensi ichave iri pasi pasi. Zvese magetsi uye epasi ndege inogona kushandiswa seinongedzo ndege, uye ese ari maviri ane mamwe ekudzivirira mashandiro. Nekudaro, iyo inodzivirira mhedzisiro yemagetsi emagetsi yakadzikira kupfuura iyo yepasi ndege nekuda kweiyo yepamusoro hunhu impedance uye yakakura inogona mutsauko pakati pesimba rekupa simba uye referensi yepasi level.

2. Dhijitari redunhu uye analoginen redunhu akaturikidzana. Iko kunobvumirwa mutengo wekugadzira, zviri nani kuronga dhijitari uye analog maseketi pazvikamu zvakasiyana. Kana uchifanira kuda kuronga mune imwechete wiring dura, inogona kushandisa gomba, wedzera pevhu mutsetse, iyo nzira sekukamura tambo kugadzirisa. Analogi nedhijitari simba uye pasi zvinofanirwa kupatsanurwa, zvisina kumbosanganiswa.

3. Iyo yakakosha chiratidzo nzira yekufamba padyo nematanho haiyambuke chikamu chikamu. Zviratidzo zvinoumba chihokodhi chikuru chechiratidzo mudunhu rese uye nekugadzira yakasimba radiation. Kana tambo yechiratidzo ikayambuka nharaunda kana tambo yepasi yakakamurwa, poindi imwechete inogona kusunganidzwa pakati pevhu kuti igadzire zambuko rekubatanidza pakati penzvimbo mbiri dzepasi, uye ipapo tambo inogona kufambiswa kuburikidza neyekubatanidza zambuko.

4. Panofanira kuva nendege yepasi yakakwana pasi pechikamu chepamusoro. Kutendeseka kwendege yepasi kunofanira kuchengetedzwa sezvinobvira kune multilayer plate. Hapana mitsetse yechiratidzo inowanzo bvumidzwa kumhanya mundege yepasi.

5, high frequency, high speed, wachi uye mamwe makiyi mitsara yechiratidzo inofanira kuva nendege yepasi yakatarisana. Nenzira iyi, chinhambwe pakati pechiratidzo mutsetse uye mutsara wepasi chinhambwe chete pakati pePCB akaturikidzana, saka chaiyo ikozvino inogara ichiyerera mumutsara wepasi zvakananga pazasi pechiratidzo mutsara, ichigadzira diki chiratidzo loop nzvimbo uye kuderedza mwaranzi.

Maitiro ekugadzira chiratidzo chekuvimbika PCB

PCB dhizaini dhizaini

Iko kiyi yechiratidzo chekuvimbika dhizaini yakadhindwa bhodhi dhizaini uye wiring, iyo inoenderana zvakananga nekuita kwePCB. Pamberi pekurongeka, saizi yePCB inofanirwa kutsunga kusangana nebasa nemutengo wakaderera unobvira. Kana iyo pcb yakanyanya kukura uye ikagoverwa, tambo yekufambisa inogona kunge yakareba kwazvo, zvichikonzera kuwedzera impedance, kudzikisira ruzha kuramba, uye kuwedzera mutengo. Kana izvo zvikamu zvakaiswa pamwechete, kupisa kupisa kwakashata, uye coupling crosstalk inogona kuitika mune yakatarisana wiring. Naizvozvo, marongerwo anofanirwa kuve anoenderana neanoshanda zvikamu zvedunhu, uchifunga nezve electromagnetic kuenderana, kupisa kupisa uye interface zvinhu.

Kana uchiisa kunze kwePCB ine yakavhenganiswa yedhijitari uye analogo masaini, usasanganisa dijitari uye analogo masaini. Kana zviratidzo zveanalogog nedhijitari zvikafanira kunge zvakasanganiswa, ita shuwa kutwasuka zvichidzika kuti udzikise mhedzisiro yekubatanidza. Iyo dhijitari yedhijitari, analogi sedunhu, uye inoburitsa ruzha pabhodhi redunhu inofanirwa kuparadzaniswa, uye inonzwisa dunhu inofanira kufambiswa kutanga, uye nzira yekubatanidza pakati pemaseketi inofanira kubviswa. Kunyanya, funga nezve wachi, reset uye nekukanganisa mitsara, usafananidze mitsara iyi neiyo yepamusoro yazvino switch mitsetse, zvikasadaro zvinokuvara zviri nyore nemagetsi ekubatanidza masigineti, zvichikonzera kusatarisika kugadzirisa kana kukanganisa. Urongwa hwese hunofanira kutevedzera zvinotevera nheyo:

1. Inoshanda partition marongerwo, analogi sedunhu uye digitaalinen dunhu paPCB inofanira kuva akasiyana spatial marongerwo.

2. Maererano nedhipatimendi rechiratidzo chekugadzirisa maitiro ekugadzirisa mashizha emagetsi, kuitira kuti chiratidzo chiyerere kuchengetedza hutungamiri hwakafanana.

3.Tora zvimisikidzo zvezvikamu zvega zvega zvinoshanda sedunhu senzvimbo, uye zvimwe zvinhu zvakarongedzwa kutenderedza.

4. Kupfupisa kuwirirana pakati pe-high-frequency components sezvinobvira uye edza kuderedza maitiro avo ekugovera.

5. Zvikamu zvinovhiringidza zviri nyore hazvifanirwe kunge zviri pedyo kune mumwe nemumwe, zvinopinda uye zvinobuda zvikamu zvinofanira kunge zviri kure.

Maitiro ekugadzira chiratidzo chekuvimbika PCB

Pcb wiring dhizaini

Yese mitsara yemasaini inofanirwa kuverengerwa pamberi pePCB wiring. Chekutanga, mutsara wewachi, mutsara wechiratidzo, uyezve mutsara wekumhanya-mhanya, kuitira kuti uve nechokwadi chekuti rudzi urwu rwechiratidzo kuburikidza negomba rwakakwana, kugovera paramita yehunhu hwakanaka, uyezve general isingakoshi mutsara wechiratidzo.

Mitsara isingaenderane yemasaini inofanirwa kunge iri kure kubva kune mumwe nemumwe uye isingaenderane newiring, senge dijitari neanalogog, kumhanya nekumhanyisa, kukwirira kwazvino uye kudiki ikozvino, kwakanyanya magetsi uye kwakaderera magetsi. Masignal cables pamatanho akasiyana anofanirwa kufambiswa wakatwasuka kune mumwe nemumwe kudzikisa crosstalk. Kurongeka kwemitsara yemasaini yakanyatsorongedzwa zvinoenderana nekutenderera kwekutenderera kwechiratidzo. Iyo inobuda chiratidzo mutsara wedunhu haifanirwe kudzoserwa kumashure kune yekupinza chiratidzo mutsara nzvimbo. High-speed signal mitsara inofanira kuchengetwa sepfupi sezvinobvira kudzivirira kupindira nemamwe mitsara yezviratidzo. Pane kaviri mapaneru, kana zvichidikanwa, iyo yekuzviparadzanisa pasi waya inogona kuwedzerwa pamativi ese eiyo yepamusoro-yekumhanya chiratidzo mutsara. Tambo dzese-dzekumhanyisa-kuwanda mitsara pane multilayer bhodhi inofanirwa kudzivirirwa zvinoenderana nehurefu hwetambo dzemawachi.

Izvo zvakajairika misimboti yeiyo wiring ndeiyi:

1. Nepazvinobvira kusarudza yakaderera density wiring dhizaini, uye chiratidzo wiring sezvinobvira ukobvu kunopindirana, kunobatsira kune impedance matching. Kune rf wedunhu, iyo isinganzwisisike dhizaini yechiratidzo mutsara kutungamira, hupamhi uye mutsara mutsara zvinogona kukonzera kupindirana pakati pemitsara yekutumira masaini.

2. Sezvingabvira kudzivirira pedyo nekuisa uye kubuda waya uye kureba-kure parallel wiring. Kuderedza crosstalk yemitsara yemasaini yakafanana, nzvimbo pakati pemitsara yemasaini inogona kuwedzerwa, kana mabhandi ekuzviparadzanisa anogona kuiswa pakati pemitsara yemasaini.

3. Mutsetse wemutsara paPCB uchave wakafanana uye hapana kuchinja kwehupamhi hwemutsara kuchaitika. Pcb wiring bend haifanirwe kushandisa 90 degrees kona, inofanirwa kushandisa arc kana 135 degrees Angle, kusvika pazvinogona kuchengetedza kuenderera kwemutsara impedance.

4. Deredza nzvimbo yechiuno chazvino. Iyo yekunze radiation intensity yeazvino-inotakura wedunhu inoenderana neyazvino inopfuura, iyo loop nzvimbo uye sikweya yechiratidzo frequency. Kuderedza yazvino chiuno nzvimbo kunogona kudzora ELECTROMAGNETIC kupindirwa kwePCB.

5. Kusvika pakuderedza kureba kwetambo, kuwedzera upamhi hwetambo, zvinobatsira kudzikisira kukanganiswa kwetambo.

6. Nezve switch switch control, iyo nhamba yeSIGNAL PCB wiring iyo inoshandura nyika panguva imwechete inofanira kudzikiswa kusvika pazvinogoneka.