Lapho kunesidingo sokufaka esikhundleni se-IC ku-PCB Circular Design, ake sabelane ngamathiphu lapho sithatha indawo yokubuyisela abaklami ukuba baphelele ku-PCB Circular Design.
1. Ukufakwa ngqo
Ukufakwa okuqondile kubhekisele ukufaka esikhundleni ngokuqondile i-IC yangempela namanye ama-ICS ngaphandle kokuguqulwa, kanye nokusebenza okuyinhloko kanye nezinkomba zomshini ngeke zithinteke ngemuva kokufakwa esikhundleni.
Umgomo wokufaka esikhundleni yilesi: Umsebenzi, inkomba yokusebenza, ifomu lephakheji, ukusetshenziswa kwe-PIN, inombolo ye-PIN nokuphumula kokubuyiselwa kwe-IC kuyafana. Umsebenzi ofanayo we-IC akagcini nje ngokubhekisela kumsebenzi ofanayo, kepha futhi ubumbano olufanayo lwe-logic, okungukuthi, umphumela kanye ne-polarity yeleveli yokufaka, i-amplitude yamanje, kanye ne-amplitude yamanje kumele ibe efanayo. Izinkomba Zokusebenza zibhekisela kumapharamitha kagesi amakhulu we-IC (noma ijika eliyisisekelo), ukuncipha kwamandla okuphezulu, ukukhishwa kwamandla okusebenza okuphezulu, uhla lwemvamisa, kanye nemingcele ehlukahlukene yokufaka kanye nokukhishwa okuhlukile okufana nalawo asekuqaleni kwe-IC. Indawo enamandla aphansi kufanele akhuphule ukucwila kokushisa.
01
Ukufakwa esikhundleni sohlobo olufanayo lwe-IC
Ukufakwa esikhundleni kohlobo olufanayo lwe-IC kuvame ukwethenjwa. Lapho ufaka umjikelezo we-PCB ohlanganisiwe, qaphela ukuthi ungazenzi iphutha ngokuqondile, uma kungenjalo, umjikelezo ohlanganisiwe we-PCB angashiswa lapho kuvulwa amandla. Amanye ama-amplifier akwindla angenayo e-Line Amplifier ics anemodeli efanayo, umsebenzi, kanye nesici, kepha ukuqondiswa kwe-oda lokuhlelela i-PIN kuhlukile. Isibonelo, i-amplifier enesiteshi esimbaxambili ye-ICLA4507 ine-pins "enhle" futhi "emibi" yokumakwa kwe-PIN (amachashazi anemibala) isesimweni esihlukile: ngokwesibonelo i-M5115RP.
02
Ukufaka esikhundleni se-ICS ngenhlamvu efanayo nenombolo nezinombolo ezihlukile
Uma nje imisebenzi ye-PIN yalolu hlobo lokufaka esikhundleni ifana ncamashi, umjikelezo we-PCB wangaphakathi kanye namapharamitha kagesi ahlukile kancane, futhi angafakwa esikhundleni ngokuqondile komunye nomunye. Isibonelo: ICLA1363 neLa1365 bafakwa emsindoni, okwedlule kwengeza i-zener diode ngaphakathi ngaphakathi kwe-IC Pin Pin 5 kunangaphambili, kanti abanye bafana.
Ngokuvamile, incwadi ye-prefix ikhombisa umenzi kanye nesigaba se-PCB Circuit. Izinombolo ngemuva kwencwadi ye-prefix ziyafana, futhi iningi lazo lingashintshwa ngqo. Kepha futhi kukhona amacala akhethekile ambalwa. Yize izinombolo ziyefana, imisebenzi ihluke ngokuphelele. Isibonelo, i-HA1364 i-IC enomsindo, futhi i-UPC1364 ingumbala we-IC; Inombolo yi-4558, i-8-PIN iyi-amplifier ye-Amplifier NJM4558, kanye ne-PIN-PIN iyi-PCB PCB ye-CD4558; Ngakho-ke, laba bobabili abakwazi ukushintshwa nhlobo. Ngakho-ke kufanele sibheke umsebenzi we-PIN.
Abanye abakhiqizi bazisa ama-Chips e-IC avumelekile futhi bawacubungule abe yimikhiqizo ebizwa ngegama elithi ngemuva kwefekthri, kanti eminye imikhiqizo ethuthukise ukuthuthukisa amapharamitha athile. Le mikhiqizo ivame ukubizwa ngamamodeli ahlukene noma ahlukaniswe yizijobelelo zemodeli. Isibonelo, i-AN380 ne-UPC1380 ingashintshwa ngqo, kanye no-A5620, i-TG5620, i-DG5620, njll. Ingashintshwa ngqo.
2. Ukufakwa esikhundleni okuqondile
Ukufakwa esikhundleni okungaqondile kubhekise indlela lapho i-IC engeke ithathelwe indawo ngokuqondile iyindlela yokushintsha kancane i-Peripheral PCB Circuit, eshintsha ilungiselelo lokuqala noma ukususa noma ukususa i-IC.
Umgomo wokufaka esikhundleni Ukusebenza komshini wokuqala akufanele kuthinteke ngemuva kokufakwa esikhundleni.
01
Ukufaka indawo ye-ics ehlanganisiwe ehlanganisiwe
Okwe-IC CHIPS yohlobo olufanayo, kepha ngezimo ezahlukahlukene zephakeji, izikhonkwane zedivayisi entsha kuphela ezidinga ukunqunyelwa kabusha ngokuya ngesimo sedivayisi yoqobo. Isibonelo, i-AFTPCB Circuit CA3064 ne-CA3064E, okwangaphambili kuyiphakheji eyindilinga enezikhonkwane ze-radial: Lesi sakhiwo siyiphakethe lepulasitiki elibili: Izici zangaphakathi zalaba bobabili ziyefana, futhi zingaxhunyaniswa ngokomsebenzi wePin. I-Dual-Row ICAN7114, AN7115 neLa4100, iLa4102 ngokuyisisekelo ngendlela yephakheji, futhi ukuhola nokushisa nokushisa kungokweziqu ezingama-180. Iphakethe le-AN5620 elishiwo ngenhla le-AN-LINE Line Line-I-16-PIN nge-Tea5620 iphakethe le-18-PIN entanjeni. Izikhonkwane 9 no-10 zitholakala ohlangothini lwesokunene lomjikelezo ohlanganisiwe we-PCB, olingana nokushisa ukushisa kwe-AN5620. Ezinye izikhonkwane zalaba bobabili zihlelwe ngendlela efanayo. Xhuma izikhonkwane ze-9 ne-10 emhlabathini ongazisebenzisa.
02
Imisebenzi yesekethe ye-PCB iyafana kodwa imiphumela ye-PIN ngayinye ihlukile esikhundleni se-LC
Ukufakwa esikhundleni kungenziwa ngokuya ngamapharamitha athile nemiyalo yohlobo ngalunye lwe-IC. Isibonelo, okukhishwe i-AGC ne-Video Signal ku-TV kunomehluko phakathi kwenqwaba nenhle, in inverter ixhumeke kwi-terminal yokuphuma, ingashintshwa.
03
Ukufaka esikhundleni kwe-ICS enemisebenzi efanayo ye-PIN kodwa ye-PIN ehlukile
Lolu hlobo lokufaka esikhundleni ludinga ukushintsha i-peripheral PCB Circuit kanye nohlelo lwe-PIN, oludinga ulwazi oluthile lwethiyori, imininingwane ephelele, kanye nokuhlangenwe nakho okucebile okusebenzayo kanye namakhono.
04
Ezinye izinyawo ezingenalutho akufanele zisuswe ngaphandle kokugunyazwa
Ezinye zezikhonkwane eziholayo kwi-PCB Circuit yangaphakathi efanayo kanye ne-PCB PURCEUT yesicelo azimakwe. Lapho kunezikhonkwane ezingenalutho zokuhola, akufanele zibe khona ngaphandle kokugunyazwa. Lezi zinhlafo eziholayo zishintshana ngezinye izindlela noma izikhonkwane, futhi kwesinye isikhathi zisetshenziswa njengokuxhumeka kwangaphakathi.
05
Ukuhlanganiswa okufakwa esikhundleni
Ukushintshwa kokunye ukuhlanganisa kabusha izingxenye ze-PCB ezilimazayo zama-ICS amaningi emodeli efanayo kwi-IC ephelele ukuze ungene esikhundleni sokusebenza kahle kwe-IC. Kuyasebenza kakhulu lapho i-IC yangempela ingatholakali. Kepha kuyadingeka ukuthi umjikelezo omuhle we-PCB ngaphakathi kwe-IC esetshenzisiwe kufanele ube ne-PIN ye-interface.
Isihluthulelo sokufakwa esikhundleni esingaqondile ukuthola amapharamitha alinganiselwe kagesi ama-ICS amabili afakwa esikhundleni komunye nomunye, umjikelezo we-PCB wangaphakathi, umsebenzi wephini ngalinye, nobudlelwano be-PIN ngayinye, kanye nobudlelwano bokuxhuma phakathi kwezakhi ze-IC. Qaphela ekusebenzeni kwangempela.
(1) Ukulandelana kwezinombolo kwezinombolo ezihlanganisiwe zePCB Circuit akufanele zixhumeke ngokungafanele;
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(3) I-Power Supply Voltage kufanele ihambisane ne-IC evuthiwe. Uma amandla okuhlinzeka nge-voltage kumjikelezo wokuqala we-PCB aphezulu, zama ukunciphisa amandla kagesi; Uma i-voltage iphansi, kuya ngokuthi i-IC evuthiwe ingasebenza;
(4) Ngemuva kokufakwa esikhundleni, i-quieientcental esebenza yamanje ye-IC kufanele ilinganiswe. Uma okwamanje kukhulu kakhulu kunenani elijwayelekile, kusho ukuthi umjikelezo we-PCB angajabulisa. Ngalesi sikhathi, ukusondelana nokulungiswa kuyadingeka. Uma inzuzo ihlukile kweyangempela, ukumelana komhlaseli wempendulo kungalungiswa;
(5) Ngemuva kokufakwa esikhundleni, okokufaka nokukhishwa kwe-IC kumele kuhambisane nomjikelezo wokuqala we-PCB; Bheka amandla ayo we-drive;
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06
Buyisela i-IC ngezakhi ezi-discrete
Kwesinye isikhathi izingxenye ze-discreete zingasetshenziswa ukufaka esikhundleni ingxenye eyonakele ye-IC yokubuyisa umsebenzi wayo. Ngaphambi kokubuyiselwa, kufanele uqonde umgomo wokusebenza wangaphakathi we-IC, i-voltage ejwayelekile yephinithi ngayinye, umdwebo we-waveform kanye nomgomo wokusebenza we-PCB Palcidents enezakhi ze-peripheral. Futhi cabanga:
(1) Ukuthi isiginali ingasuswa yini emsebenzini c futhi ixhunywe kwi-terminal yokufaka ye-peripheral PCB Circle:
. Uma i-Ildimediacier Amplifier IC ilimele, kusuka ku-PCB Circuit ejwayelekile yesicelo kanye ne-PCB Yangaphakathi, yakhiwa nge-Audio Intermediate Amplifier, Ukubandlululwa Kwemvamisa kanye Njalo Ukukhuthaza. Indlela yokufaka yesiginali ingasetshenziswa ukuthola ingxenye eyonakele. Uma ingxenye ye-audio amplifier ilimele, izingxenye ze-dicrete zingasetshenziswa esikhundleni salokho.
