Yi amfani da sauƙi IC don tsawaita rayuwar baturin wayarka

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - អ្នកផ្គត់ផ្គង់ស្ថានីយ៍ថាមពលចល័ត

Rage amfani da wayar salula da kuma tsawaita rayuwar batir shine burin kowane injiniyan ƙirar wayar hannu. Injiniyoyin ƙira suna ƙara na&39;urar MP3, kyamarori, da cikakkun bidiyon mota kamar wayoyin hannu na zamani, waɗanda za su ci gaba da rage amfani da wutar lantarki. Rage ƙarfin wutar lantarki na wayar hannu muhimmin guntu (kamar guntu mai tushe na analog da guntu baseband na dijital) - yana iya zama 2.

8V ko ma 1.8V - hanyar rage amfani da wutar lantarki. Amma lokacin da injiniyan ƙira ya kamata ya riƙe guda ɗaya ko fiye da guntuwar tallafi tare da babban ƙarfin wadatar, akwai matsala.

Mafi na kowa shi ne cewa karin aikin wayoyin hannu zai kasance mafi girma. Ɗaya daga cikin misalan shine sautin ringi na kirtani, tun da iyakar siginar siginar sauti kusan 3.2V, don haka da&39;irar da ke faruwa da watsa waɗannan sautin ringi yawanci 4 ne.

2V ƙarfin wutar lantarki. Ta wannan hanyar, matsaloli suna faruwa a mu&39;amalar da&39;irori na baseband da sautin ringi. Don misalta wannan matsalar, yakamata mu yi amfani da canjin analog don canza murya ko sautin ringi zuwa lasifikar a matsayin misali.

Don canza waɗannan nau&39;ikan da&39;irori guda biyu akan toshe ɗaya (PCB), ana amfani da wutar lantarki, ko kuma ana amfani da ƙaramin ƙarfin wutan lantarki na dijital dabaru a cikin guntu na baseband. Duk da haka, ya kamata a lura cewa hanya ta ƙarshe na iya rasa wutar lantarki da aka samu daga guntu na baseband don rage ƙarfin wutar lantarki, saboda lokacin da maɓallin analog yana aiki a cikin yanayin da ba daidai ba, za a sami yawan zafin jiki na halin yanzu. Hanya ɗaya mai sauƙi don magance wannan matsala ita ce canza ma&39;anar dijital daga guntu mai tushe don kula da guntu na baseband don adana wuta ta amfani da 1.

8V irin ƙarfin lantarki, amma wannan hanya ya kamata ya zama mafi girma irin ƙarfin lantarki direba dole aiki a mafi girma irin ƙarfin lantarki. Duk wani guntu a wayarka. Domin kara bayyana wannan hanyar, yadda ake daidaita mai canzawa, bari mu ga inda ainihin halin yanzu ke gudana.

Kamar yadda aka nuna a cikin Hoto 1, shigar da dijital na canjin analog shine ainihin buffer CMOS wanda ya ƙunshi PMOS da transistor NMOS da aka haɗa da inverter. Ƙara sigina zuwa fil ɗin shigar da I/P na buffer. Lokacin da wutar lantarkin da ke shigar da ita ya fi ƙarfin ƙarfin shigarwar (VIH), ƙarfin wutar lantarki na buffer shine VDD (waɗanda ke samar da wutar lantarki), lokacin da ƙarfin shigarwar ya kasance ƙasa da ƙarancin ƙarfin shigarwa (VIL), ƙarfin fitarwa na buffer shine GND (ƙasa).

Wannan yana tabbatar da cewa ƙarfin wutar lantarki na ƙofar analog shine ƙarfin wutar lantarki na tushen wutar lantarki, ta haka yana yin kewayon siginar sa. Saka idanu lokaci guda na madaidaicin siffa ta IV wanda aka nuna a hoto na 2 yayin sa ido kan ƙarfin shigar da wutar lantarki daga 0 zuwa VDD na duba ƙarfin shigar da bayanai. Lokacin da shigar da ƙarfin lantarki shine kowane ƙarshen ƙarfin wutar lantarki, IDD yana faɗuwa zuwa mafi ƙarancin (0μA).

Koyaya, lokacin da ƙarfin shigarwar ya kusa kusa da wurin buffer, IDD ɗin ya ƙaru sosai. Don haka, lokacin da ƙarfin shigarwar dijital da aka yi amfani da shi zuwa ƙarshen I / P shine ƙarfin wutar lantarki na tushen wutar lantarki, canjin analog yana cinye mafi ƙarancin wutar lantarki. Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙadda tọn na Gudanarwa ne na Gudanarwa ) na Gudanarwa na Yanar Gizo na Yanar Gizo na Yanar Gizo na Yanar Gizo na Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙaƙwalwar Ƙwararrun Ƙwararrun Ƙwararrun Ƙwararrun Ƙwararrun NMOS da PMOS da aka yi amfani da su a cikin ƙirar buffer, haƙiƙa a matsayin mai tsayayyar wutar lantarki.

Siffofin waɗannan chips ɗin sune kamar haka: VGS> VT->Transistor Tube Tutor Ana kashe transistor VGS don samar da wutar lantarki, kuma ana yin tashar sarrafawa tsakanin tushen da magudanar ruwa lokacin da ƙarfin lantarki ya fi ƙarfin lantarki. NMOS transistor Vt shine 0.9V, PMOS transistor Vt shine -0.

9V. Don haka, lokacin da ƙarfin shigarwar ya kasance 0V, PMOS (M1) yana cikin kunnawa, kuma fitowar matakin farko shine VDD. A mataki na biyu, na&39;urar NMOS (M5) tana cikin yanayin da buffer yana da jimlar fitarwa na 0V.

Ƙarfin shigar da buffer yana ƙaruwa (kafin ya kai matsakaicin halin yanzu) ya haifar da rashin daidaituwa na M1 (M1 fara kashewa) da kuma m5 na raguwar impedance (M5 ya fara kunna), to, za mu ga VDD da GND. An kafa tashar hyper-impedance. Ƙarin haɓaka ƙarfin shigarwar zai haifar da transistor guda ɗaya kawai a cikin shigarwar da fitarwa na transistor nau&39;i-nau&39;i na buffer.

Muna amfani da ƙa&39;idodin da ke sama don ci gaba da nazarin misalan canjin analog, la&39;akari da yin amfani da adi&39;s ADG884 na&39;urorin analog don canzawa tsakanin zoben juya wayar hannu da magana. Siginar sarrafawa daga guntu mai tushe na dijital shine 1.8V.

Kamar yadda aka nuna a FIG. 2, idan simulated canza kai tsaye kore tare da dijital sigina na 1.8V, da wutar lantarki halin yanzu ya zama 120μA.

Idan ƙarfin shigarwar dijital na canjin analog ya fi 3.8V, to lallai ya kamata amfani da wutar lantarki ya zama 0. Don haka, don yin canjin analog ɗin da ke aiki a mafi ƙarancin ƙarfi, siginar dijital na guntu baseband na dijital shine canzawa zuwa mafi girman ƙarfin lantarki.

Adi&39;s SC70 matsananci-kananan kunshin kuma yawanci kawai yana cinye 0.1μA halin yanzu, kamar yadda mai canza matakin ya dace da wannan aikin. Kamar yadda aka nuna a FIG.

3, ana iya haɗa shi da ƙarfin wutar lantarki na guntu na baseband da ƙarfin wutar lantarki na canjin analog kuma ya canza matakin tunani tsakanin kwakwalwan biyu. Tabbas, canjin analog a cikin misalin da ke sama na iya zama kowane guntu da ke aiki a mafi girman ƙarfin lantarki. Wayoyin hannu na zamani sun ƙunshi da&39;irori na CMOS da yawa (ICs) don kammala ayyuka daban-daban, kamar sauti da bidiyo da kyamarori na dijital.

Waɗannan ICs yawanci suna aiki a ƙarƙashin kowane irin ƙarfin lantarki tsakanin 5V zuwa 1.8V, wani lokacin har ma da ƙananan ƙarfin wutar lantarki. A taƙaice, muna amfani da matakan ƙarfin ceton wuta don tsawaita rayuwar baturi.

Ya kamata a yi la&39;akari da waɗannan abubuwa masu zuwa: ƙananan wayoyin hannu yawanci suna amfani da ƙarfin ƙarfin 600mAh. Lokacin jiran baturi na wayar mara ƙarfi shine sa&39;o&39;i 300 (HR), kuma ƙimar sa na yanzu shine 2mA. Idan ba a yi canjin matakin ba, canjin analog ɗin da aka yi amfani da shi a cikin wannan misalin zai ɗauki halin yanzu na 4.

8%, amma idan kawai matakin da ke sama ya canza, kawai 0.04% na halin yanzu yana tunawa.