Kuongorora kwemhangura kwakapararira mukati PCB

Kana paine dzakawanda pcb pasi, SGND, AGND, GND, nezvimwewo, zvinodikanwa kuti ushandise iyo inonyanya kukosha pasi sekureva kune yakasununguka kupfeka mhangura zvinoenderana neakasiyana pcb bhodhi chinzvimbo, ndiko kuti, batanidza pasi pamwechete.

Pane zvikonzero zvinoverengeka zvekuisa mhangura zvakawandisa. 1, EMC. Kwenzvimbo huru yevhu kana magetsi ekuisa mhangura, ichaita basa rekudzivirira, mamwe akakosha, akadai sePGND anotamba chinodzivirira.

2. PCB maitiro anodikanwa. Kazhinji, kuitira kuona electroplating maturo, kana pasina deformation pamusoro lamination, nokuti pcb bhodhi pamwe zvishoma wiring rukoko mhangura.

3. Ehezve, kune kupisa kupisa, kwakakosha kuisirwa chishandiso zvinodiwa shopu mhangura zvichingodaro. Pane zvikonzero zvinoverengeka zvekuisa mhangura zvakawandisa.

1, EMC. Kwenzvimbo yakakura yevhu kana magetsi anoparadzira mhangura, ichaita basa rekudzivirira, mamwe akakosha, akadai sePGND anotamba chinodzivirira.

2. PCB maitiro anodikanwa. Kazhinji, kuitira kuona electroplating maturo, kana pasina deformation pamusoro lamination, nokuti pcb bhodhi pamwe zvishoma wiring rukoko mhangura.

3. Ehezve, kune kupisa kupisa, kwakakosha kuisirwa chishandiso zvinodiwa shopu mhangura zvichingodaro.

Chitoro, mukana wakakura wemhangura ndeyekuderedza pasi impedance (paive nechikamu chikuru cheinonzi anti-jamming kudzora pasi impedance) yedhijitari redunhu iripo mune yakawanda nhamba yepamusoro yekupomba ikozvino, nekudaro ichideredza ivhu impedance yakanyanya kudikanwa kune vamwe, inowanzofungidzirwa kuti kune iyo dunhu rese rakagadzirwa nemadhijitari madhiragi inofanira kunge iri huru pasi, kune dunhu reanalogog, Iyo pasi chiuno chakaumbwa nekuisa mhangura chinokonzeresa electromagnetic coupling kupindira (kunze kwekukwirira frequency maseketi). Naizvozvo, kwete ese matunhu anoda wepasirose mhangura (BTW: network mhangura yekugadzira mashandiro iri nani pane iro rese bhuroka)

Chechipiri, kukosha kwedunhu kuisa mhangura kuri mu: 1, kuisa waya yemhangura uye yepasi kwakabatana pamwechete, kuti tikwanise kudzora dunhu 2, takaparadzira nzvimbo yakakura yemhangura yakaenzana kudzikisa kusagadzikana kwepasi, kudzikisira kudonha kwekumanikidza mune aya maviri mapoinzi, kana manhamba. kuisa mhangura kuitira kuti iwedzere kugona kwekupokana-kupindirana, uye panguva yekukwirisa inofanirwa kuparadzira yavo yedhijitari uye yeanalogog pasi kuti vaparadzanise mhangura, ivo vanobva vabatana nepfungwa imwechete, Iyo imwechete poindi inogona kusunganidzwa netambo ronda rakatenderedza rin’i rin’in’i kakawanda. Nekudaro, kana iyo frequency isina kunyanyisa kukwirira, kana mashandiro ezvinhu echiridzwa asina kushata, anogona kunge akareruka. Iko kristaro oscillator inoshanda senge yepamusoro-frequency transmitter mudunhu. Iwe unogona kuisa mhangura kwakatenderedza uye wozadza iro rekristaro goko, izvo zviri nani.

Ndeupi musiyano uripo pakati pebhokisi rese remhangura neiyo gridhi? Yakananga kuongorora nezve matatu marudzi emhedzisiro: 3 yakanaka 1 ruzha rwekudzvinyirira 2 kuitira kudzikisira kukwirisa-kwakawanda (mune redunhu vhezheni yechikonzero) zvinoenderana nemirairidzo yewiring: simba pamwe nekuumbwa kwakawanda sezvinobvira nei kuwedzera grid ah haisi nemutemo haina kuenderana nazvo? Kana kubva pakuona kwekukwirira kwakawanda, hazvina kukodzera mukukwirisa wiring apo iyo yakawanda taboo iri yakapinza wiring, mune yemagetsi dura rine n inopfuura 90 degrees ndiwo matambudziko mazhinji. Nei uchizviita nenzira iyoyo inyaya yehunyanzvi: tarisa kune iwo akasungirirwa nemaoko uye uone kana vakapendwa nenzira iyoyo. Iwe unoona ichi kudhirowa uye ndine chokwadi chekuti paive nechip pairi nekuti paive nenzira yainzi wave soldering pawanga uchiiisa uye iye aizo pisa bhodhi munharaunda imomo uye kana iwe ukaiisa yese mumhangura iyo chaiyo kupisa coefficients pamativi maviri aive akasiyana uye bhodhi raisimuka uyezve dambudziko rosimuka, Muchifukidzo chesimbi (icho chinodikanwawo nemaitiro acho), zviri nyore kwazvo kuita zvikanganiso paPIN yechip, uye mwero wekuramba uchakwira munzira yakatwasuka. Muchokwadi, nzira iyi zvakare ine zvayakaipira: Pasi peyedu yazvino ngura maitiro: Zviri nyore kwazvo kuti iyo firimu inamatire pairi, uyezve muchirongwa cheacid, iyo pfungwa inogona kusakora, uye kune yakawanda marara, asi kana paine, ingori bhodhi rakatyoka uye ndicho chip chinodzikira bhodhi! Kubva pane ino maonero, iwe unoona here kuti nei yakavezwa saizvozvo? Ehezve, kune zvekare mamwe tafura yekunamatira isina gridhi, kubva pakuona kusagadzikana kwechigadzirwa, panogona kunge paine mamiriro maviri: 2, maitiro ake engura akanaka kwazvo; 2. Panzvimbo pekusungirirwa kwemasaisai, iye anotora yakanyanya kumberi yekutsisa yevira, asi mune ino kesi, kudyara kweiyo yose gungano mutsara ichave iri katatu zvakapetwa.