Thaum muaj qhov xav tau los hloov IC hauv PCB Circuit Court tsim, cia peb qhia qee cov lus qhia thaum hloov IC los pab cov neeg tsim qauv zoo tshaj hauv PCB Circuit Court tsim.
1. Kev hloov pauv ncaj qha
Kev hloov pauv ncaj qha hais txog kev hloov pauv tus thawj IC nrog lwm cov ICs yam tsis muaj kev hloov kho, thiab cov kev ua haujlwm tseem ceeb thiab cov ntsuas ntawm lub tshuab yuav tsis cuam tshuam tom qab hloov pauv.
Lub hauv paus ntsiab lus hloov yog: kev ua haujlwm, kev ua haujlwm Performance index, pob ntawv, kev siv tus pin, tus lej tus lej thiab lub sijhawm hloov IC yog tib yam.Tib txoj haujlwm ntawm IC tsis yog tsuas yog hais txog tib txoj haujlwm xwb, tab sis kuj yog tib lub logic polarity, uas yog, cov zis thiab cov tswv yim theem polarity, voltage, thiab tam sim no amplitude yuav tsum yog tib yam.Cov ntsuas kev ua tau zoo yog xa mus rau IC lub ntsiab hluav taws xob tsis zoo (lossis cov yam ntxwv tseem ceeb nkhaus), qhov siab tshaj plaws lub zog dissipation, siab tshaj plaws kev khiav hauj lwm voltage, ntau zaus, thiab ntau yam teeb liab input thiab output impedance tsis zoo ib yam li cov thawj IC.Kev hloov pauv nrog lub zog qis yuav tsum ua kom lub dab dej kub.
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Hloov ntawm tib hom IC
Kev hloov ntawm tib hom IC feem ntau txhim khu kev qha.Thaum txhim kho qhov sib xyaw PCB Circuit Court, ceev faj kom tsis txhob ua yuam kev hauv kev taw qhia, txwv tsis pub, kev sib xyaw PCB Circuit Court yuav raug hlawv thaum lub hwj chim qhib.Qee lub tshuab hluav taws xob hauv-kab hluav taws xob ICs muaj tib tus qauv, kev ua haujlwm, thiab cov yam ntxwv, tab sis cov kev taw qhia ntawm tus pin kev txiav txim sib txawv.Piv txwv li, dual-channel fais fab amplifier ICLA4507 muaj "zoo" thiab "negative" pins, thiab thawj tus pin cim (xim dots lossis pits) yog nyob rau hauv cov lus qhia sib txawv: tsis muaj cov lus xaus thiab cov lus xaus yog "R", IC, thiab lwm yam, piv txwv li M5115P thiab M5115RP.
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Hloov cov ICs nrog tib tsab ntawv ua ntej thiab cov lej sib txawv
Raws li ntev raws li tus pin lub zog ntawm hom kev hloov pauv no zoo ib yam, cov khoom siv hluav taws xob hauv PCB thiab cov hluav taws xob tsis sib txawv me ntsis, thiab lawv tuaj yeem hloov tau ncaj qha rau ib leeg.Piv txwv li: ICLA1363 thiab LA1365 tau muab tso rau hauv lub suab, tom kawg ntxiv ib lub Zener diode hauv IC tus pin 5 dua li qub, thiab lwm yam zoo ib yam.
Feem ntau, tsab ntawv ua ntej qhia txog cov chaw tsim khoom thiab qeb ntawm PCB Circuit Court.Cov lej 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 qhov tshwj xeeb.Txawm hais tias cov lej yog tib yam, cov haujlwm sib txawv kiag li.Piv txwv li, HA1364 yog lub suab IC, thiab uPC1364 yog xim xim IC;tus xov tooj yog 4558, 8-pin yog ib qho kev ua haujlwm amplifier NJM4558, thiab 14-pin yog CD4558 digital PCB Circuit Court;yog li ntawd, ob qho tib si tsis tuaj yeem hloov tau txhua.Yog li peb yuav tsum saib tus pin muaj nuj nqi.
Qee lub tuam txhab qhia txog cov khoom siv tsis tau ntim IC chips thiab ua lawv rau hauv cov khoom muaj npe tom qab lub Hoobkas, thiab qee cov khoom lag luam txhim kho los txhim kho qee qhov tsis zoo.Cov khoom no feem ntau muaj npe nrog cov qauv sib txawv lossis txawv los ntawm cov qauv suffixes.Piv txwv li, AN380 thiab uPC1380 tuaj yeem hloov ncaj qha, thiab AN5620, TEA5620, DG5620, thiab lwm yam tuaj yeem hloov ncaj qha.
2. Kev hloov pauv tsis ncaj
Kev hloov pauv tsis ncaj yog hais txog ib txoj hauv kev uas IC tsis tuaj yeem hloov pauv ncaj qha yog ib txoj hauv kev hloov kho me ntsis ntawm PCB Circuit Court, hloov pauv tus pin qub lossis ntxiv lossis tshem tawm cov khoom ntiag tug, thiab lwm yam, ua kom nws hloov tau IC.
Kev hloov lub hauv paus ntsiab lus: IC siv nyob rau hauv kev hloov pauv tuaj yeem sib txawv ntawm tus thawj IC nrog lub zog sib txawv thiab qhov sib txawv, tab sis cov haujlwm yuav tsum zoo ib yam thiab cov yam ntxwv yuav tsum zoo sib xws;kev ua haujlwm ntawm lub tshuab qub yuav tsum tsis txhob cuam tshuam tom qab hloov pauv.
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Hloov cov ntim sib txawv ICs
Rau IC chips ntawm tib hom, tab sis nrog cov pob ntawv sib txawv, tsuas yog cov pins ntawm cov cuab yeej tshiab yuav tsum tau hloov kho raws li cov duab thiab kev teeb tsa ntawm cov pins ntawm cov khoom qub.Piv txwv li, AFTPCB Circuit Court CA3064 thiab CA3064E, yav dhau los yog ib lub voj voog pob nrog radial pins: tom kawg yog ob lub hnab yas hauv-kab, cov yam ntxwv sab hauv ntawm ob yog tib yam, thiab lawv tuaj yeem txuas tau raws li qhov pin function.Dual-kab ICAN7114, AN7115 thiab LA4100, LA4102 yog qhov pib zoo ib yam hauv daim ntawv pob, thiab cov hlau lead thiab cov dab dej kub yog qhov sib nrug ntawm 180 degrees.Cov lus hais saum toj no AN5620 dual hauv-kab 16-pin pob nrog lub dab dej kub thiab TEA5620 dual hauv kab 18-pin pob.Pins 9 thiab 10 nyob rau sab xis ntawm kev sib xyaw PCB Circuit Court, uas yog sib npaug rau lub dab dej kub ntawm AN5620.Lwm tus pins ntawm ob yog teem rau tib txoj kev.Txuas tus pin 9 thiab 10 rau hauv av siv.
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PCB Circuit Court ua haujlwm zoo ib yam tab sis tus kheej tus pin ua haujlwm sib txawv lC hloov pauv
Kev hloov pauv tuaj yeem ua tau raws li cov kev txwv tshwj xeeb thiab cov lus qhia ntawm txhua hom IC.Piv txwv li, AGC thiab video teeb liab tso zis hauv TV muaj qhov sib txawv ntawm qhov zoo thiab qhov tsis zoo polarity, tsuav yog lub inverter txuas nrog lub qhov tso zis tawm, nws tuaj yeem hloov tau.
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Hloov cov ICs nrog tib cov yas tab sis txawv tus pin ua haujlwm
Qhov kev hloov pauv no yuav tsum tau hloov pauv ntawm PCB Circuit Court thiab pin kev teeb tsa, uas yuav tsum muaj qee yam kev paub txog kev xav, cov ntaub ntawv ua tiav, thiab kev paub siv tau zoo thiab kev txawj ntse.
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Qee cov ko taw khoob yuav tsum tsis txhob muaj av tsis muaj kev tso cai
Qee cov hlau lead pins nyob rau hauv qhov sib npaug PCB Circuit Court thiab daim ntawv thov PCB Circuit Court tsis raug cim.Thaum muaj cov hlau lead khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoobCov hlau lead pins no yog lwm tus pins spare, thiab qee zaum lawv kuj tau siv los ua kev sib txuas sab hauv.
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Kev sib hloov hloov
Kev hloov pauv kev sib txuas yog rov ua dua qhov tsis raug PCB Circuit Court ntawm ntau ICs ntawm tib tus qauv rau hauv IC tiav los hloov IC ua haujlwm tsis zoo.Nws siv tau heev thaum tsis muaj IC thawj.Tab sis nws yuav tsum muaj PCB zoo hauv IC siv yuav tsum muaj tus pin interface.
Tus yuam sij rau kev hloov pauv tsis ncaj yog txhawm rau txheeb xyuas qhov ntsuas hluav taws xob tsis zoo ntawm ob lub ICs uas tau hloov pauv rau ib leeg, qhov sib npaug ntawm PCB Circuit Court, kev ua haujlwm ntawm txhua tus pin, thiab kev sib txuas ntawm cov khoom ntawm IC.Ceev faj hauv kev ua haujlwm tiag tiag.
(1) Tus lej lej ntawm kev sib koom ua ke ntawm PCB tus pins yuav tsum tsis raug txuas nrog yuam kev;
(2) Txhawm rau hloov mus rau cov yam ntxwv ntawm IC hloov pauv, cov khoom ntawm cov khoom siv hluav taws xob PCB txuas nrog nws yuav tsum tau hloov pauv raws li;
(3) Lub zog hluav taws xob hluav taws xob yuav tsum ua raws li kev hloov IC.Yog hais tias lub hwj chim mov voltage nyob rau hauv thawj PCB Circuit Court yog siab, sim txo qhov voltage;yog tias qhov hluav taws xob tsawg, nws nyob ntawm seb qhov hloov IC tuaj yeem ua haujlwm li cas;
(4) Tom qab kev hloov pauv, lub quiescent ua hauj lwm tam sim no ntawm IC yuav tsum tau ntsuas.Yog tias qhov tam sim no loj dua li tus nqi ib txwm muaj, nws txhais tau tias PCB Circuit Court tej zaum yuav ua rau nws tus kheej zoo siab.Lub sijhawm no, kev txiav tawm thiab kev hloov kho yog xav tau.Yog tias qhov nce txawv ntawm qhov qub, qhov kev tawm tsam ntawm cov lus tawm tswv yim tuaj yeem hloov kho;
(5) Tom qab kev hloov pauv, qhov kev tawm tswv yim thiab cov zis impedance ntawm IC yuav tsum ua raws li qhov qub PCB Circuit Court;xyuas nws lub peev xwm tsav;
(6) Ua kom siv tag nrho cov pin qhov thiab ua rau ntawm thawj PCB Circuit Court board thaum hloov pauv, thiab cov coj sab nraud yuav tsum zoo huv si thiab tsis txhob hla pem hauv ntej thiab nraub qaum, txhawm rau xyuas thiab tiv thaiv PCB Circuit Court los ntawm tus kheej excitation, tshwj xeeb tshaj yog kom tsis txhob muaj qhov siab ntawm tus kheej excitation;
(7) Nws yog qhov zoo tshaj plaws los txuas lub ntsuas hluav taws xob DC tam sim no hauv koob hauv Vcc lub voj voog ntawm lub hwj chim ua ntej lub hwj chim, thiab saib seb qhov kev hloov pauv ntawm tag nrho cov tam sim no ntawm PCB Circuit Court yog ib txwm los ntawm loj mus rau me me.
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Hloov IC nrog cov khoom sib cais
Qee zaum cov khoom sib cais tuaj yeem siv los hloov qhov puas ntawm IC los kho nws txoj haujlwm.Ua ntej hloov, koj yuav tsum nkag siab txog lub hauv paus ntsiab lus ntawm IC, qhov voltage ntawm txhua tus pin, daim duab waveform thiab lub hauv paus ntsiab lus ntawm PCB Circuit Court nrog cov khoom siv peripheral.Kuj xav txog:
(1) Txawm hais tias lub teeb liab tuaj yeem raug tshem tawm los ntawm kev ua haujlwm C thiab txuas nrog lub input davhlau ya nyob twg ntawm peripheral PCB Circuit Court:
(2) Txawm hais tias lub teeb liab ua tiav los ntawm peripheral PCB Circuit Court tuaj yeem txuas mus rau qib tom ntej hauv kev sib xyaw PCB Circuit Court rau kev rov ua dua (lub teeb liab sib piv thaum sib txuas yuav tsum tsis txhob cuam tshuam rau nws qhov tseem ceeb thiab kev ua haujlwm).Yog hais tias qhov nruab nrab amplifier IC puas lawm, los ntawm cov ntawv thov PCB Circuit Court thiab sab hauv PCB Circuit Court, nws yog tsim los ntawm lub suab intermediate amplifier, zaus kev ntxub ntxaug thiab zaus boosting.Lub teeb liab input txoj kev yuav siv tau los nrhiav qhov puas.Yog hais tias lub suab amplifier ib feem puas lawm, discrete Cheebtsam yuav siv tau xwb.