Bayanin Fasaha na Nunin LED LTC-2624JD - Tsayin Lamba 0.28-inch - Jan AlInGaP - Ƙarfin Wutar Gaba 2.6V - Takardun Fasaha na Hausa

1. Bayanin Samfur

LTC-2624JD wani ingantaccen tsari ne na nunin lamba uku da sassa bakwai, wanda aka tsara don aikace-aikacen da ke buƙatar karanta lambobi a sarari tare da ƙarancin amfani da wutar lantarki. Babban aikinsa shine samar da nunin lambobi a cikin na'urorin lantarki kamar kayan gwaji, masu sarrafa masana'antu, allunan kayan aiki, da na'urorin lantarki na mabukaci. Babban fa'idar wannan na'urar ya ta'allaka ne a cikin amfani da fasahar LED ta AlInGaP (Aluminum Indium Gallium Phosphide), wacce ke ba da ingantaccen inganci na haske da tsaftar launi idan aka kwatanta da kayan LED na gargajiya. Wannan yana haifar da kyakkyawan bayyanar haruffa, babban haske, da babban bambanci, wanda ke sa lambobin su zama masu sauƙin karantawa ko da a cikin wurare masu haske. An rarraba na'urar don ƙarfin haske, yana tabbatar da daidaiton matakan haske a cikin samfuran samarwa, wanda ke da mahimmanci ga aikace-aikacen da ke buƙatar daidaiton ingancin nuni.

2. Zurfin Bayanan Fasaha

2.1 Halayen Gani

Aikin gani shine tsakiyar aikin nuni. Na'urar tana fitar da haske a cikin bakan jan launi. Matsakaicin tsayin tsayin fitarwa (λp) shine nanomita 656, tare da babban tsayin tsayi (λd) na 640 nm, yana samar da jan launi mai tsafta. Ramin layin bakan (Δλ) shine 22 nm, yana nuna ƙunƙuntaccen bandwidth wanda ke ba da gudummawa ga jikewar launi. Babban ma'auni don haske shine matsakaicin ƙarfin haske (Iv), wanda yake da mafi ƙarancin 200 μcd, ƙimar al'ada, da matsakaicin 600 μcd lokacin da aka tuka a cikin gaba na yanzu (IF) na kawai 1 mA kowane sashi. Wannan siffa ta ƙarancin wutar lantarki, babban haske, siffa ce mai mahimmanci. Bugu da ƙari, sassan sun dace da ƙarfin haske tare da ma'aunin daidaitawa (IV-m) na 2:1 mafi girma lokacin da aka tuka a 10 mA, yana tabbatar da daidaiton haske a duk sassan duk lambobi.

2.2 Halayen Lantarki

Ma'auni na lantarki suna ayyana yanayin aiki da buƙatun wutar lantarki. Ƙarfin wutar lantarki na gaba (VF) kowane sashi yawanci Volts 2.6 ne, tare da matsakaicin 2.6V a gwajin na yanzu na 20 mA. Juyin baya na yanzu (IR) kowane sashi yana da ƙasa sosai, tare da matsakaicin 10 μA lokacin da aka yi amfani da juyin baya na wutar lantarki (VR) na 5V. An tsara na'urar don aiki mai ƙarancin wutar lantarki, tare da sassan da ke da ikon tuka yadda ya kamata a cikin igiyoyin da suka kai ƙasa da 1 mA, wanda shine babban burin ƙira da aka bayyana a cikin bayanin. An tsara da'irar ciki azaman anode gama gari, ma'ana an haɗa anodes na LEDs na kowane lamba tare, yana buƙatar tsarin tuƙi da yawa inda ake haskaka lambobi a jere a babban mitar.

2.3 Matsakaicin Matsakaicin Matsakaici

Waɗannan ƙididdiga suna ƙayyade iyakokin da za a iya haifar da lalacewa ta dindindin. Matsakaicin rarrabawar wutar lantarki na ci gaba kowane sashi shine 75 mW. Matsakaicin gaba na yanzu kowane sashi shine 100 mA, amma wannan yana halatta ne kawai a ƙarƙashin yanayin bugun jini tare da aikin 1/10 da faɗin bugun jini na 0.1 ms. Dole ne a rage yawan gaba na yanzu kowane sashi a layi daga 25 mA a 25°C. Matsakaicin juyin baya na wutar lantarki kowane sashi shine 5V. Yankin zafin jiki na aiki da ajiya daga -35°C zuwa +85°C, yana nuna dacewa ga yanayin masana'antu da faɗaɗa muhalli. Matsakaicin zafin gishiri shine 260°C na matsakaicin dakika 3 a nisan 1.6mm ƙasa da matakin wurin zama, wanda shine jagorar gishiri na reflow.

3. Bayanin Tsarin Binning

Bayanin ya nuna cewa an "rarraba na'urar don ƙarfin haske." Wannan yana nuna tsarin binning ko rarrabuwa bisa ga aikin haske da aka auna. Duk da yake ba a bayar da cikakkun bayanan lambar kwandon a cikin wannan takarda ba, irin wannan tsarin yawanci yana rarraba na'urori bisa ga ƙarfin haske da aka auna a daidaitaccen gwajin na yanzu (misali, 1mA ko 10mA). Wannan yana tabbatar da cewa masu ƙira da masana'antu za su iya zaɓar nunin tare da daidaitattun matakan haske don samfuran su, suna guje wa bambance-bambancen da ake iya gani tsakanin raka'a daban-daban a cikin haɗuwa ɗaya. Ma'aunin daidaiton ƙarfin haske na 2:1 yana ƙara tabbatar da cewa a cikin na'ura ɗaya, bambancin haske tsakanin mafi ƙarancin sashi da mafi haske ba zai wuce wannan abu ba.

4. Bincike na Lanƙwasa Aiki

Duk da yake an ambaci takamaiman jadawali don lanƙwasa halaye na lantarki/na gani a shafi na 5 na bayanin amma ba a yi cikakken bayani ba a cikin rubutun da aka bayar, irin waɗannan lanƙwasa sune daidaitattun abubuwan LED. Yawanci za su haɗa da:

• Gaba na Yanzu da Gaba na Wutar Lantarki (Lanƙwasa I-V):Wannan jadawalin yana nuna alaƙar da ba ta dace ba tsakanin igiyar da ke gudana ta LED da wutar lantarki a cikinta. Yana da mahimmanci don ƙirar da'irar iyakance na yanzu.
• Ƙarfin Hasken Gani da Gaba na Yanzu (Lanƙwasa I-L):Wannan yana nuna yadda fitowar haske ke ƙaruwa tare da ƙara tuƙi na yanzu. Yana da mahimmanci don tantance yawan aiki na yanzu da ake buƙata don cimma matakin haske da ake so.
• Ƙarfin Hasken Gani da Yanayin Yanayi:Wannan lanƙwasa yana nuna yadda fitowar haske ke raguwa yayin da zafin yanayi ya tashi. Fahimtar wannan raguwa yana da mahimmanci ga aikace-aikacen da ke aiki a cikin yanayi mai zafi.
• Rarraba Bakan:Jadawali na ƙarfin dangi da tsayin tsayi, yana nuna kololuwa a 656 nm da siffar bakan hasken da aka fitar.

Waɗannan lanƙwasa suna ba da damar injiniyoyi su yi hasashen halayen nuni a ƙarƙashin yanayin aiki daban-daban waɗanda ba a rufe su a cikin bayanan tebur ba.

5. Bayanin Injiniya da Marufi

LTC-2624JD yana zuwa a cikin daidaitaccen kunshin nunin LED. Tsayin lamba shine 0.28 inches (7.0 mm). Zanen girmamin kunshin (wanda aka ambata a shafi na 2) yana ba da ainihin jigon jiki, tazarar fil, da girman gabaɗaya a cikin milimita. Matsakaicin iyakoki don waɗannan girma yawanci ±0.25 mm sai dai idan an faɗi akasin haka. Na'urar tana da fuskar launin toka tare da fararen sassa, wanda ke haɓaka bambance-bambance ta hanyar rage hasken yanayi da aka nuna daga wuraren da ba a haskaka su na nuni. Teburin haɗin fil yana ba da cikakken taswira na fil 26, yana ba da cikakken bayani game da haɗin cathode na kowane sashi (A-G, DP) na kowane lamba (1-3) da fil ɗin anode gama gari na lambobi. Wannan taswirar daidai yana da mahimmanci don ƙirar shimfidar PCB da da'irar direba.

6. Jagororin Gishiri da Haɗawa

Babban jagorar haɗawa da aka bayar yana da alaƙa da zafin gishiri. Na'urar na iya jure matsakaicin zafin gishiri na 260°C na matsakaicin tsawon dakika 3, wanda aka auna a wani wuri 1.6mm (1/16 inch) ƙasa da matakin wurin zama na kunshin. Wannan daidaitaccen ƙayyadaddun tsari ne don gishirin igiyar ruwa ko hanyoyin gishiri na reflow. Dole ne masu ƙira su tabbatar da bayanan martabar gishirin su ba su wuce waɗannan iyakokin ba don hana lalata guntuwar LED na ciki ko kunshin filastik. Don ajiya, an ƙayyade kewayon zafin jiki daga -35°C zuwa +85°C. Yana da kyau a adana abubuwan a cikin busasshiyar muhalli, mai hana tashin hankali don hana ɗaukar danshi da lalacewar fitar da wutar lantarki kafin amfani.

7. Shawarwari na Aikace-aikace

7.1 Yanayin Aikace-aikace na Al'ada

Wannan nuni yana da kyau ga kowane na'urar da ke amfani da baturi ko ƙarancin wutar lantarki da ke buƙatar karanta lambobi masu yawa a sarari. Aikace-aikacen gama gari sun haɗa da na'urori masu ɗaukar hoto masu yawa, ma'aunin zafin jiki na dijital, nunin agogo, alamomin sarrafa tsari, alamomin matakin cajin baturi, da nunin saituna akan na'urorin mabukaci. Aikinsa na ƙarancin wutar lantarki yana sa ya dace da na'urorin da ke da fifiko na kiyaye wutar lantarki.

7.2 Abubuwan Tunani na Ƙira

• Da'irar Direba:A matsayin nuni na anode gama gari, yana buƙatar direba mai yawa. Dole ne a yi amfani da microcontroller tare da isassun fil ɗin I/O ko takamaiman direban nuni IC (kamar MAX7219 ko makamancinsa) don samar da wutar lantarki ta hanyar anode gama gari na kowane lamba yayin da ake nutsewa ta hanyar madaidaicin cathode na sashi.
• Iyakance na Yanzu:Dole ne a sami resistors masu iyakance na yanzu na waje don kowane layin cathode na sashi (ko an gina su a cikin direba IC) don saita gaba na yanzu zuwa ƙimar da ake so (misali, 1-20 mA). Ana ƙididdige ƙimar resistor ta amfani da dabara R = (Vcc - VF) / IF, inda Vcc shine wutar lantarki ga anode gama gari, VF shine ƙarfin wutar lantarki na gaba na LED (typ. 2.6V), kuma IF shine yanzu na sashi da ake so.
• Ƙimar Sabuntawa:Lokacin haɗa lambobi uku, dole ne ƙimar sabuntawa kowane lamba ta yi yawa sosai don guje wa kyan gani, yawanci sama da 60 Hz kowane lamba, yana haifar da jimlar mitar haɗawa >180 Hz.
• Kusurwar Dubawa:Bayanin ya ambaci faɗin kusurwar dubawa, amma don mafi kyawun sanyawa, yi la'akari da yanayin duban mai amfani na ƙarshe dangane da allon nuni.

8. Kwatancen Fasaha da Bambance-bambance

Babban abubuwan banbance na LTC-2624JD sune fasahar kayan aiki da aikin ƙarancin wutar lantarki. Idan aka kwatanta da nunin da ke amfani da tsohuwar fasahar LED ta GaAsP ko GaP, AlInGaP tana ba da ingantaccen inganci na haske sosai, yana haifar da fitarwa mai haske a cikin wutar lantarki ɗaya ko daidaitaccen haske a ƙarancin wutar lantarki. Takamaiman ambaton "gwaji da zaɓe don kyawawan halayensa na ƙarancin wutar lantarki" da dacewa a 1mA kowane sashi yana nuna ingantaccen sa don ƙira masu ingancin makamashi. Ƙirar fuskar launin toka/fararen sashi kuma tana ba da mafi girman ma'auni na bambanci idan aka kwatanta da duk-baƙi ko duk-launin toka, yana inganta karantawa. Rarrabuwa don ƙarfin haske yana ba da ƙarin matakin ingancin sarrafawa da daidaito waɗanda ba koyaushe ake samu ba a cikin ainihin tsarin nunin.

9. Tambayoyin da ake yawan yi (Dangane da Ma'auni na Fasaha)

Q: Shin zan iya tuka wannan nuni tare da microcontroller 5V kai tsaye?

A: A'a, ba za ku iya haɗa sassan kai tsaye zuwa fil ɗin microcontroller ba. Kuna buƙatar resistors masu iyakance na yanzu a jere tare da kowane cathode na sashi. Bugu da ƙari, saboda tsarin anode gama gari da buƙatun haɗawa, da alama za ku buƙaci tsarin transistor ko direba IC don sarrafa igiyoyin sashi da sauyawar lamba.

Q: Menene bambanci tsakanin tsayin tsayi (656 nm) da babban tsayin tsayi (640 nm)?

A: Tsayin tsayi shine tsayin tsayin da bakan fitarwa yake da matsakaicin ƙarfinsa. Babban tsayin tsayi shine tsayin tsayin haske guda ɗaya wanda ya dace da launin da ake gani na LED. Bambancin ya samo asali ne daga siffar bakan fitarwa na LED. Dukansu suna nuna launin ja.

Q: Matsakaicin ci gaba na yanzu shine 25 mA, amma yanayin gwaji don VF shine 20 mA. Wanne ya kamata in yi amfani da shi don ƙira?

A: Don aiki mai dogaro na dogon lokaci, yana da hikima a ƙira don wutar lantarki a ko ƙasa da yanayin gwaji na al'ada na 20 mA. Yin aiki a matsakaicin matsakaicin 25 mA baya barin gefe kuma yana iya rage rayuwa. Dacewar 1 mA yana nuna an tsara shi don ƙananan igiyoyin ruwa, don haka zaɓi wutar lantarki bisa ga hasken da kuke buƙata da kasafin wutar lantarki.

Q: Ta yaya zan fassara ma'aunin daidaiton ƙarfin haske na 2:1?

A: Wannan yana nufin cewa a cikin na'urar nuni ɗaya, ƙarfin haske na mafi ƙarancin sashi ba zai zama ƙasa da rabin ƙarfin mafi haske ba lokacin da aka auna a ƙarƙashin yanayi ɗaya (IF=10mA). Wannan yana tabbatar da daidaiton gani.

10. Yanayin Ƙira da Amfani na Aiki

Yi la'akari da ƙirar ma'aunin dijital mai ɗaukar hoto. Babban abubuwan da ake buƙata sune ƙarancin amfani da wutar lantarki don dogon rayuwar baturi da nuni mai tsabta a ƙarƙashin yanayin haske daban-daban. LTC-2624JD zaɓi ne mai kyau. Ƙirar za ta ƙunshi microcontroller tare da na'urar jujjuyawar analog-zuwa-dijital don auna wutar lantarki/na yanzu/juriya. Tashoshin I/O na microcontroller, ta hanyar jerin resistors masu iyakance na yanzu (waɗanda aka ƙidaya don ~5-10 mA kowane sashi don daidaita haske da wutar lantarki), za su haɗa zuwa cathode na sashi. Za a yi amfani da transistors uku na NPN (ko tsarin transistor guda ɗaya) don canza anode gama gari na kowane lamba zuwa wutar lantarki (misali, 3.3V ko 5V) ƙarƙashin sarrafa software. Firmware zai aiwatar da haɗawa, canza ƙimar da aka auna zuwa daidaitattun ƙirar sashi na kowane lamba da kuma zagaye ta cikin su da sauri. Ƙarancin ikon 1mA yana ba da damar yanayin duhu don ƙara adana wutar lantarki lokacin da ba a buƙatar cikakken haske.

11. Gabatarwar Ka'idar Fasaha

LTC-2624JD ya dogara ne akan kayan semiconductor na AlInGaP da aka girma akan ma'auni mara ganuwa na GaAs. AlInGaP wani semiconductor ne kai tsaye na bandgap daga rukunin III-V. Lokacin da aka yi amfani da ƙarfin wutar lantarki na gaba a kan mahaɗin p-n, ana shigar da electrons da ramuka cikin yanki mai aiki. Suna sake haɗuwa da haske, suna sakin makamashi a cikin nau'in photons. Takamaiman abun da ke ciki na Aluminum, Indium, Gallium, da Phosphide yana ƙayyade ƙarfin bandgap, wanda kai tsaye yake ƙayyade tsayin tsayi (launi) na hasken da aka fitar—a wannan yanayin, ja. Ma'auni mara ganuwa yana taimakawa jagorar yawancin hasken da aka samar daga saman na'urar, yana inganta ingancin waje. Sa'an nan kuma ana ɗora guntuwar LED ɗaya kuma ana haɗa su da waya a cikin kunshin filastik don samar da sassa bakwai da maki goma na kowane lamba.

12. Trends na Fasaha da Mahallin

Duk da yake nunin LED na sassa bakwai ya kasance ingantaccen mafita mai tsada don karanta lambobi, faɗin yanayin fasahar nuni ya samo asali. Yarjejeniya a yawancin aikace-aikacen mabukaci da na masana'antu shine zuwa ga nunin OLED ko LCD na matrix-dot waɗanda za su iya nuna haruffa lambobi da zane-zane. Duk da haka, don aikace-aikacen da ake buƙatar lambobi kawai, ana buƙatar amincin matuƙar gaske, aiki a kan kewayon zafin jiki yana da mahimmanci, ko babban haske da kusurwoyin dubawa suna da mahimmanci, nunin LED na sassa bakwai kamar LTC-2624JD suna riƙe da matsayi mai ƙarfi. Ci gaba da ci gaba a cikin kayan LED, kamar AlInGaP da InGaN (don shuɗi/kore), yana ci gaba da inganta ingancinsu, haske, da kewayon launi. Bugu da ƙari, yunƙurin zuwa IoT da ƙananan na'urorin lantarki yana daidaitawa da ƙarancin ikon wutar lantarki na nunin LED na zamani.