Thaum muaj ib qho yuav tsum tau hloov IC hauv PCB Circuit Tsim, cia peb qhia qee cov lus qhia thaum hloov cov qauv tsim tau zoo tshaj plaws hauv PCB Circuit Tsim.

1. Hloov pauv
Kev hloov pauv ncaj qha yog hais txog xa cov thawj IC uas tsis muaj kev hloov kho, thiab cov ntsuas kev ua tau zoo thiab cov ntsuas ntawm lub tshuab hloov.

Qhov hloov pauv kuj yog: txoj haujlwm, kev ua tau zoo tshaj tawm, pob daim ntawv, tus lej PIN, tus lej PIN, tus lej ntawm cov hloov pauv yog tib yam. Tib yam kev ua haujlwm ntawm cov IC tsis yog hais txog tib yam haujlwm, tab sis kuj yog cov zis txheej polarity, voltage, qhov tam sim no yuav tsum zoo ib yam. Cov cim ntsuas kev ua tau zoo xa mus rau IC lub qhov hluav taws xob loj (lossis cov cim hluav taws xob tseem ceeb, thiab cov zis ntau tshaj plaws uas tau ua rau cov ntawm tus thawj ic. Hloov chaw nrog lub zog qis yuav tsum nce cov tshuab hluav taws.

01
Hloov chaw ntawm tib hom ic
Qhov hloov ntawm tib hom ntawm IC yog feem ntau ntseeg tau. Thaum txhim kho PCB Circuit Court, ceev faj kom tsis txhob ua yuam kev, txwv tsis pub, PCB Circuit Court tuaj yeem hlawv thaum lub hwj chim tig mus. Qee qhov kev ua haujlwm hauv kab hluav taws xob amplifier iics muaj tib tus qauv, muaj nuj nqi, tab sis kev coj ntawm lub pin kev txiav txim siab sib txawv. Piv txwv li, lub zog dual-channel amplifier iCla4507 muaj "cov cim Pits" thiab lwm yam M5115P thiab M5115RP.

02
Hloov chaw ntawm ICS nrog tib daim ntawv ua ntej thiab cov lej sib txawv
Tsuav tus pin ua haujlwm ntawm hom kev hloov pauv no yog qhov zoo ib yam, cov hluav taws xob pcbeters zoo ib yam, thiab lawv kuj tuaj yeem hloov ncaj qha rau ib leeg. Piv txwv li: ICLA1363 thiab LA1365 tau muab tso rau hauv lub suab, tom qab ntxiv dua ib zener diode hauv iC 5 dua li cov qub, thiab lwm tus yog tib yam.

Feem ntau, tsab ntawv ua ntej qhia txog cov chaw tsim tshuaj paus thiab qeb ntawm PCB Circuit Court. Cov naj npawb tom qab tsab ntawv ua ntej yog tib yam, thiab feem ntau ntawm lawv tuaj yeem hloov ncaj qha. Tab sis kuj tseem muaj qee kis tshwj xeeb. Txawm hais tias tus lej yog tib yam, cov haujlwm yog txawv kiag li. Piv txwv li, ha1364 yog lub suab IC, thiab UPC1364 yog xim cov khoom khov kho IC; Tus lej yog 4558, 8-tus pin yog ib tug ua haujlwm tshaj plaws NJM4558, thiab 14 tus lej yog CD4558 digital pcb circuit Court; Yog li ntawd, ob qho ob tsis tuaj yeem hloov txhua. Yog li peb yuav tsum saib tus lej PIN.

Qee cov tuam ntxhab ua kom pom cov chips tsis tau thiab ua rau lawv cov khoom muaj npe tom qab lub Hoobkas, thiab qee cov khoom tsim txhim kho los txhim kho qee yam tsis zoo. Cov khoom no feem ntau muaj npe nrog cov qauv sib txawv lossis qhov txawv los ntawm cov qauv ua tiav. Piv txwv li, An380 thiab UPC1380 tuaj yeem hloov ncaj qha, thiab all5620, tshuaj yej aws5620, thiab lwm yam. Hloov ncaj qha.

2. Kev tsis raug
Kev hloov pauv tsis ncaj ncees yog hais txog ib txoj kev uas tsis tuaj yeem hloov kho ib qho me me lossis kev rho tawm lossis tshem tawm tus kheej lub IC.

Kev hloov chaw ntawm kev hloov chaw: IC siv nyob rau hauv lub chaw hloov pauv tuaj yeem sib txawv, tab sis cov nuj nqis yuav tsum yog tib yam thiab cov yam ntxwv yuav tsum zoo sib xws; Cov kev ua tau zoo ntawm lub tshuab qub yuav tsum tsis muaj kev cuam tshuam tom qab hloov chaw.

01
Hloov chaw ntawm cov pob sib txawv
Rau icips ntawm tib hom, tab sis nrog cov pob sib txawv, tsuas yog cov pins ntawm cov cuab yeej tshiab yuav tsum tau rov kho dua raws li cov duab thiab kev npaj ntawm cov khoom siv qub. Piv txwv li, tus AFPCB Circuit Coill ca304 thiab Ca3064E, tus qub yog ib qho zoo ib yam, thiab lawv tuaj yeem txuas nrog rau tus lej PIN. Dual-kab Ican7114, AN7114, AN7115 thiab LA4100, LA4100, LA4102 yog qhov txhuas nyob hauv daim ntawv pob, thiab cov hmoov txhuas thiab cov cua sov yog raws nraim 180 degrees sib nrug. Lub aworementioned A5620 Dual hauv-Kab 16-Npwv pob nrog lub tshuab cua sov thiab Tea5620 Dual hauv-Kab 18-Npwv pob. PINS 9 thiab 10 nyob rau sab xis ntawm Pcb Circuit Coaccuit Court, uas yog sib npaug rau lub tshav kub tog ntawm AN5620. Lwm cov pins ntawm ob yog npaj ua tib txoj kev. Txuas lub 9th thiab 10 pins rau hauv av los siv.

02
PCB Circuit haum yog tib yam tab sis tus kheej tus lej PIN zog yog LC hloov
Cov hloov pauv tuaj yeem nqa tawm raws li cov tsis muaj tseeb thiab cov lus qhia ntawm txhua hom IC. Piv txwv li, AGC thiab cov teeb liab teeb liab hauv TV muaj qhov sib txawv ntawm qhov sib txawv thiab cov inverter txuas nrog rau cov zis tawm tswv yim, nws tuaj yeem hloov chaw.

03
Hloov chaw ntawm ICS nrog tib lub yas tab sis sib txawv tus pin muaj nuj nqi
Qhov kev hloov pauv zoo no tau hloov pauv cov pecboral pcb Circuit Court thiab pin kev npaj, uas yuav tsum muaj qee yam kev paub zoo, ua tiav cov ntaub ntawv thiab kev txawj ntse.

04
Qee qhov khoob yuav tsum tsis txhob ua av tsis muaj kev tso cai
Qee qhov ntawm cov pins hmoov txhuas hauv sab hauv kab sib npaug PCB Circuit Court thiab daim ntawv thov PCB Circuit Court tsis cim. Thaum muaj cov pins lead ua, lawv yuav tsum tsis txhob ua kom tsis muaj kev tso cai. Cov pins lead lead no yog hloov lossis spare pins, thiab qee zaum lawv kuj tau siv los ua kev sib txuas sab hauv.

05
Kev sib xyaw ua ke hloov chaw
Hloov ua ke hloov yog kom rov ua tiav cov undamide seem ntawm ntau tus qauv rau hauv ib lub cim ua tiav los hloov cov haujlwm ua haujlwm tsis zoo. Nws yog siv tau heev thaum thawj ic tsis muaj. Tab sis nws yog qhov yuav tsum tau hais tias ib pcb circuit Coaccuit hauv lub ic siv yuav tsum muaj ib tug interface pin.

Tus yuam sij rau kev tsis ncaj ncees yog txhawm rau nrhiav cov hluav taws xob hauv PCB, cov haujlwm sab hauv ntawm txhua tus PIN, thiab kev sib txuas ntawm cov sib txuas ntawm cov khoom ntawm IC. Ua tib zoo ua haujlwm.

(1) Cov lej ua ntu zus ntawm cov PCB Circuit Coaccuit Pins yuav tsum tsis txhob sib txuas nrog;
(2) Txhawm rau hloov cov yam ntxwv ntawm lub IC hloov, cov cheebtsam ntawm lub peripheral pcb sib txuas nrog nws yuav tsum tau hloov kom haum;
(3) Lub hwj huam muab hluav taws xob voltage yuav tsum muaj raws li cov hloov IC. Yog lub hwj chim muab voltage nyob rau hauv thawj PCB Circuit Court yog qhov siab, sim txo cov hluav taws xob; Yog tias qhov hluav taws xob tsawg, nws nyob ntawm seb puas yog IC tuaj yeem ua haujlwm;
(4) Tom qab hloov, cov quiescent ua haujlwm tam sim no ntawm IC yuav tsum ntsuas. Yog tias qhov tam sim no loj dua tus nqi ib txwm muaj, nws txhais tau tias PCB Circuit Court yuav yog tus kheej zoo siab. Lub sijhawm no, decoupling thiab kev hloov kho yuav tsum muaj. Yog tias qhov nce ntawm qhov sib txawv ntawm cov thawj, qhov tsis kam ntawm cov tswv yim tiv thaiv tuaj yeem hloov kho;
(5) Tom qab hloov chaw, cov tswv yim thiab tso tawm cov impedance ntawm IC yuav tsum sib phim tus thawj pcb Circuit Court; Txheeb xyuas nws lub peev xwm tsav;
(6) siv tag nrho cov pin qhov thiab ua rau cov PcB Circ Circuit Court thaum ua kev hloov pauv, yog li los tiv thaiv tus kheej qhov kev txaus siab rau tus kheej;
(7) Nws yog qhov zoo tshaj plaws txuas DC tam sim no hauv series nyob rau hauv VCC lub zog ntawm lub zog ua ntej ntawm tag nrho cov kev hloov pauv ntawm Pcb Circuit Court yog ib txwm los ntawm loj mus rau me me.

06
Hloov cov IC nrog cov khoom sib txawv
Qee zaum cov khoom sib txawv tuaj yeem siv los hloov ib feem uas tsis zoo ntawm IC los kho nws txoj haujlwm. Ua ntej hloov, koj yuav tsum nkag siab txog lub luag haujlwm sab hauv ntawm IC, qhov kev siv hluav taws xob ib txwm ntawm PCB Circuit Coents. Kuj tseem xav:

(1) Puas yuav raug teeb liab tuaj yeem nqa tawm los ntawm kev ua haujlwm C thiab txuas nrog lub tswv yim lub davhlau ya nyob ntawm lub pob tw pecheral:
(2) seb puas muaj lub teeb liab pcb Circuit Court tuaj yeem txuas nrog rau qib tshiab sab hauv lub pcbessing (cov teeb liab sib txuam Yog hais tias intermediate amplifier iC yog puas, los ntawm PCB Circuit Court, nws yog muaj los ntawm etolfioforization thiab zaus kev txhawb nqa. Cov qauv teeb liab yuav siv tau los nrhiav qhov tsis zoo. Yog tias lub suab amplifier feem yog puas, cov khoom sib txawv tuaj yeem siv xwb.