Siv IC yooj yim los txuas lub roj teeb lub neej ntawm koj lub xov tooj

著者：Iflowpower – Lieferant von tragbaren Kraftwerken

Txo cov xov tooj ntawm tes siv hluav taws xob thiab txuas ntxiv nws lub roj teeb lub neej yog lub hom phiaj ntawm txhua tus tsim qauv xov tooj ntawm tes. Cov kws tsim qauv tsim los tas li ntxiv MP3 player, koob yees duab, thiab cov yeeb yaj kiab tag nrho xws li cov xov tooj ntawm tes niaj hnub, uas yuav txuas ntxiv txo qis kev siv hluav taws xob. Txo cov fais fab mov voltage ntawm lub xov tooj ntawm tes tseem ceeb nti (xws li analog baseband nti thiab digital baseband nti) - tej zaum yuav yog 2.

8V los yog txawm 1.8V - ib txoj kev ntawm kev txo hwj chim noj. Tab sis thaum tus kws tsim qauv tsim yuav tsum khaws ib lossis ntau qhov kev txhawb nqa chips nrog cov khoom siv hluav taws xob siab, muaj teeb meem.

Qhov feem ntau yog tias qhov kev ua haujlwm ntxiv ntawm smartphones yuav siab dua. Ib qho piv txwv yog txoj hlua ringtone, txij li lub suab teeb liab siab tshaj plaws yog li ntawm 3.2V, yog li lub voj voog uas tshwm sim thiab xa cov ringtone feem ntau yog 4.

2V fais fab mov voltage. Nyob rau hauv no txoj kev, teeb meem tshwm sim nyob rau hauv lub interface ntawm baseband thiab ringtone circuits. Txhawm rau piav qhia qhov teeb meem no, peb yuav tsum siv qhov hloov pauv analog los hloov lub suab lossis lub suab nrov rau tus neeg hais lus ua piv txwv.

Txhawm rau hloov ob hom circuits ntawm tib lub thaiv (PCB), siv lub zog siv hluav taws xob, lossis qhov hluav taws xob tsis tshua muaj hluav taws xob digital logic tsav analog hloov hauv lub hauv paus nti. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias txoj kev tom kawg tuaj yeem poob lub zog siv tau los ntawm lub hauv paus nti los txo cov hluav taws xob hluav taws xob, vim tias thaum hloov pauv analog ua haujlwm hauv hom tsis zoo, yuav muaj ntau qhov perfusion tam sim no. Ib txoj hauv kev yooj yim los daws qhov teeb meem no yog hloov cov logic digital los ntawm cov chip baseband kom tswj tau cov chip baseband kom txuag hluav taws xob siv 1.

8V voltage, tab sis txoj kev no yuav tsum muaj hluav taws xob ntau dua tus tsav tsheb yuav tsum ua haujlwm ntawm qhov hluav taws xob ntau dua. Txhua nti hauv koj lub xov tooj. Yuav kom piav qhia ntxiv txog txoj kev no, yuav ua li cas rau theem lub converter, cia peb pom qhov twg tam sim no ntws.

Raws li pom hauv daim duab 1, cov tswv yim digital ntawm qhov hloov pauv analog yog qhov yooj yim CMOS tsis muaj xws li PMOS thiab NMOS transistors txuas nrog lub inverter. Ntxiv cov teeb liab rau I / P input tus pin ntawm qhov tsis. Thaum lub input voltage siab tshaj qhov input high voltage (VIH), qhov tso zis voltage ntawm qhov tsis yog VDD (lub hwj chim mov voltage), thaum lub input voltage yog qis dua qhov input voltage (VIL), cov zis voltage ntawm qhov tsis yog GND (hauv av).

Qhov no ua kom ntseeg tau tias lub rooj vag voltage ntawm qhov hloov pauv analog yog qhov hluav taws xob ntawm lub zog hluav taws xob, yog li ua rau nws cov teeb liab ntau. Kev soj ntsuam ib txhij ntawm IV tus yam ntxwv nkhaus qhia hauv daim duab 2 thaum saib xyuas cov input voltage ntawm 0 rau VDD scanning input voltage. Thaum lub input voltage yog qhov kawg voltage ntawm lub hwj chim mov voltage, IDD poob mus rau qhov tsawg kawg nkaus (0μA).

Txawm li cas los xij, thaum lub input voltage nyob ze rau qhov hopping point ntawm qhov tsis, IDD tau nce ntau heev. Yog li ntawd, thaum lub digital input voltage siv rau I / P kawg yog qhov hluav taws xob ntawm lub zog hluav taws xob, qhov hloov pauv analog siv lub zog tsawg kawg nkaus. Cov yam ntxwv nkhaus muaj cov yam ntxwv nkhaus vim NMOS thiab PMOS hloov cov raj siv nyob rau hauv tsis siv neeg tsim, ua tau raws li ib tug voltage tswj resistor.

Cov yam ntxwv ntawm cov chips no yog raws li nram no: VGS> VT-> Transistor Tube Tutor Lub VGS transistor yog muab tua los tsim ib tug pib voltage, thiab ib tug conductive channel yog tsim los ntawm qhov chaw thiab cov ntws thaum lub voltage siab tshaj qhov voltage. NMOS transistor Vt yog 0.9V, PMOS transistor Vt yog -0.

9V. Yog li ntawd, thaum lub input voltage yog 0V, PMOS (M1) nyob rau hauv lub xeev, thiab cov zis ntawm thawj theem yog VDD. Hauv theem thib ob, NMOS (M5) ntaus ntawv yog nyob rau hauv lub xeev uas tsis muaj tag nrho cov zis ntawm 0V.

Qhov tsis muaj zog input voltage nce (ua ntej mus txog qhov siab tshaj plaws tam sim no) ua rau lub impedance ntawm M1 (M1 pib tua) thiab m5 ntawm impedance poob (M5 pib tig rau), ces peb yuav pom VDD thiab GND. Hyper-impedance channel tsim. Ntxiv mus, qhov input voltage yuav ua rau tsuas yog ib tug transistor nyob rau hauv lub input thiab output transistor khub ntawm lub buffer.

Peb siv cov ntsiab lus saum toj no txhawm rau txheeb xyuas cov piv txwv hloov pauv, xav txog kev siv Adi&39;s ADG884 analog keyboards hloov ntawm lub xov tooj ntawm tes spinning rings thiab hais lus. Tswj cov teeb liab los ntawm digital baseband nti yog 1.8V.

Raws li qhia hauv FIG. 2, yog tias lub simulated hloov tau ncaj qha nrog lub teeb liab digital ntawm 1.8V, lub zog hluav taws xob tam sim no yuav tsum yog 120μA.

Yog hais tias cov input voltage ntawm lub analog hloov siab tshaj 3.8V, ces lub zog noj yuav tsum yog 0. Yog li ntawd, txhawm rau ua kom cov analog hloov ua haujlwm ntawm thaj chaw qis tshaj plaws, cov teeb liab digital ntawm digital baseband nti yog hloov mus rau qhov hluav taws xob ntau dua.

Adi&39;s SC70 ultra-me pob thiab feem ntau tsuas yog siv tsuas yog 0.1μA tam sim no, vim tias qib hloov pauv tau tsim nyog rau txoj haujlwm no. Raws li qhia hauv FIG.

3, nws tuaj yeem txuas nrog lub zog hluav taws xob ntawm lub hauv paus nti thiab lub zog hluav taws xob hluav taws xob ntawm qhov hloov pauv analog thiab hloov cov theem logic ntawm ob lub chips. Tau kawg, qhov hloov pauv analog hauv qhov piv txwv saum toj no tuaj yeem yog txhua lub nti ua haujlwm ntawm cov hluav taws xob ntau dua. Niaj hnub nimno cov xov tooj ntawm tes muaj ntau yam CMOS integrated circuits (ICs) kom ua tiav cov haujlwm sib txawv, xws li audio thiab video thiab cov koob yees duab digital.

Cov ICs no feem ntau ua haujlwm nyob rau hauv ib qho hluav taws xob ntawm 5V txog 1.8V, qee zaum txawm tias qhov hluav taws xob qis dua. Hauv cov ntsiab lus, peb siv cov theem ntawm lub zog txuag hluav taws xob kom ntev roj teeb lub neej.

Cov hauv qab no yuav tsum tau xav txog: cov xov tooj qis kawg feem ntau siv 600mAh muaj peev xwm roj teeb. Lub sijhawm siv roj teeb ntawm lub xov tooj qis kawg yog 300 teev (HR), thiab nws lub npe tam sim no yog 2mA. Yog tias qhov hloov pauv tsis tau ua tiav, qhov hloov pauv analog siv hauv qhov piv txwv no yuav nqus qhov tam sim no ntawm 4.

8%, tab sis yog tias tsuas yog theem saum toj no hloov dua siab tshiab, tsuas yog 0.04% tam sim no absorbed.