LTC-4798SW 0.39-inch Quadruple Digit White LED Display Datasheet - Digit Height 9.9mm - Forward Voltage 2.7-3.2V - Power 35mW per Segment - Takardun Fasaha na Hausa

1. Bayanin Samfur

LTC-4798SW samfur ne mai nuni na lambobi hudu, tare da alamar lamba da haruffa bakwai. Aikin sa na asali shine nuna bayanan lambobi da ƙayyadaddun haruffa a cikin na'urorin lantarki. Fasahar sa ta asali ta dogara ne akan ƙananan na'urorin LED fari na InGaN (Indium Gallium Nitride) da aka ɗora akan wani abu mai gani. Wannan na'urar tana da fuska fari da sassan fari, tana ba da bayyanar gani mai tsabta da bambanci mai girma. An rarraba shi azaman nuni na multiplex common cathode, ma'ana an haɗa katod na LED na kowane lamba tare, yana ba da damar sarrafa lambobi da yawa tare da rage adadin fil ɗin tuƙi.

1.1 Fa'idodi na Asali da Kasuwar da Ake Nufi

Nunin yana ba da fa'idodi masu mahimmanci da yawa waɗanda suka sa ya dace da aikace-aikace iri-iri. Haskensa mai ƙarfi da bambanci mai girma suna tabbatar da karantawa mai kyau ko da a cikin wurare masu haske. Kusurwar kallo mai faɗi na digiri 130 tana ba da damar kallon nunin daga matsayi daban-daban. Yana da ƙarancin buƙatun wutar lantarki, yana ba da gudummawa ga ingantaccen amfani da makamashi a cikin samfurin ƙarshe. Ingantaccen ingancin fasahar LED yana tabbatar da dogon rayuwar aiki da juriya ga girgiza da rawar jiki. Na'urar tana amfani da kunshin da ba shi da gubar, yana bin ka'idojin RoHS (Ƙuntata Abubuwa masu haɗari), yana sa ya dace da kasuwannin duniya masu ƙaƙƙarfan ƙa'idodin muhalli. Kasuwannin da ake nufi sun haɗa da kayan aikin masana'antu, kayan amfani na mabukaci, tashoshin siyarwa, na'urorin likitanci, da nunin dashboard na mota inda ake buƙatar karatun lambobi masu bayyanawa, amintattu.

2. Bincike Mai zurfi na Sigogi na Fasaha

Wannan sashe yana ba da cikakken bayani, fassarar haƙiƙa ta halayen lantarki, na gani, da na zafi da aka ƙayyade a cikin takardar bayanai.

2.1 Halayen Hoto da Na Gani

Matsakaicin ƙarfin haske (Iv) an ƙayyade shi tsakanin 71 zuwa 146 millicandelas (mcd) a daidaitaccen gwajin na'urar na 5mA. Wannan siga yana ayyana hasken kowane sashe da aka haskaka. Takardar bayanai ta lura cewa ƙarfin haske an rarraba shi, ma'ana ana rarraba na'urori kuma ana yi musu alama bisa ga abin da aka auna, yana ba masu ƙira damar zaɓar nunin tare da matakan haske masu daidaito. Kusurwar kallo (2θ1/2) ita ce digiri 130, wanda shine cikakken kusurwar da ƙarfin haske ya ragu zuwa rabin ƙimar sa mafi girma da aka auna akan-axis. Wannan faɗaɗɗen kusurwa fa'ida ce mai mahimmanci ga aikace-aikace inda mai amfani bazai kasance a gaban nunin kai tsaye ba. An ba da daidaitattun ma'auni na launi (x, y) azaman ƙima na yau da kullun (x=0.304, y=0.3) a ƙarƙashin zane-zanen launi na CIE na 1931, yana ayyana ma'anar fari na hasken da aka fitar. Ana amfani da jurewar ±0.01 ga waɗannan ma'auni a cikin tsarin rarrabawa.

2.2 Sigogi na Lantarki

Ƙarfin lantarki na gaba (Vf) kowane sashe yana tsakanin 2.7V zuwa 3.2V a ƙarfin lantarki na gaba (If) na 5mA. Wannan siga ce mai mahimmanci don ƙira da'irar iyakancewar na'urar LED. Matsakaicin ƙimar ƙididdiga yana ayyana iyakokin aiki: ci gaba da ƙarfin lantarki na gaba kowane sashe bai kamata ya wuce 10mA ba, kuma ƙimar ƙarfin lantarki na gaba (a ƙarƙashin yanayin bugun jini na 1kHz, aikin aiki 10%) bai kamata ya wuce 50mA ba. Ragewar wutar lantarki kowane sashe yana iyakance zuwa 35mW. Wuce waɗannan ƙimar na iya haifar da lalacewa na dindindin ko gazawa. Ƙarfin lantarki na baya (Ir) an ƙayyade shi azaman matsakaicin 100µA a ƙarfin lantarki na baya (Vr) na 5V. Takardar bayanai a sarari ta yi gargadin cewa wannan yanayin ƙarfin lantarki na baya don dalilai na gwaji ne kawai kuma bai kamata a ci gaba da aiki da na'urar a ƙarƙashin ƙarfin lantarki na baya ba, saboda ba a ƙera LED don jure ƙarfin lantarki na baya mai mahimmanci ba.

2.3 Halayen Zafi

Kewayon zafin aiki da ajiya na na'urar daga -35°C zuwa +85°C. Wannan faɗaɗɗen kewayon yana sa ya dace don amfani a cikin yanayin da ke fuskantar bambancin zafi mai mahimmanci. An ƙayyade ƙimar rage ƙarfin lantarki na gaba: ga kowane digiri Celsius sama da 25°C, dole ne a rage matsakaicin ƙarfin lantarki na gaba da aka yarda da shi da 0.28mA. Wannan muhimmin abu ne na ƙira don hana guduwar zafi da tabbatar da amincin dogon lokaci, musamman a aikace-aikacen yanayin zafi mai girma. An ƙayyade yanayin gishiri a matsayin 260°C na dakika 3 a nisan 1/16 inch (kusan 1.6mm) a ƙasa da matakin wurin zama, wanda shine daidaitaccen bayanin sake karkatar da mara gubar.

3. Bayanin Tsarin Rarrabawa

Samfurin yana amfani da cikakken tsarin rarrabawa don tabbatar da daidaito a cikin mahimman sigogi. Wannan yana ba masana'antun damar zaɓar abubuwan da suka dace da takamaiman buƙatunsu don daidaito a cikin saitin nuni da yawa.

3.1 Rarrabawar Ƙarfin Lantarki na Gaba (Vf)

Ana rarraba na'urori zuwa kwandon kayan aiki bisa ga ƙarfin lantarki na gaba a 5mA. Ana yiwa kwandon kayan aiki lakabi daga 3 zuwa 7, tare da kewayon Vf daga 2.7-2.8V (Kwandon 3) har zuwa 3.1-3.2V (Kwandon 7). Ana amfani da jurewar ±0.1V ga kowane kwandon kayan aiki. Zaɓar nunin daga kwandon Vf ɗaya yana taimakawa tabbatar da daidaiton haske lokacin da aka tuƙa shi ta hanyar tushen ƙarfin lantarki mai daidaitawa tare da resistors na jerin, saboda ƙarfin lantarki ta kowane sashe zai kasance mafi daidaito.

3.2 Rarrabawar Ƙarfin Hasken (Iv)

Wannan siga ce mai mahimmanci ta rarrabawa don daidaiton gani. Ana yiwa kwandon kayan aiki lakabi tare da lambobin haruffa (Q11, Q12, Q21, Q22, R11, R12). Ƙarfin haske yana tsakanin mafi ƙanƙanta na 71.0 mcd (Q11 min) zuwa matsakaicin 146.0 mcd (R12 max). Ana amfani da jurewar ±15% ga kowane kwandon kayan aiki. An yiwa lambar rarrabuwar Iv alama a kan kowace jakar tattarawa, yana sauƙaƙe bin diddigin da zaɓi.

3.3 Rarrabawar Launi (Chromaticity)

Ana sarrafa ma'anar launin fari ta hanyar rarrabawar launi. Takardar bayanai ta ayyana kwandon kayan aiki da yawa (S3-1, S3-2, S4-1, S4-2) tare da takamaiman iyakoki akan ma'auni na launi na CIE 1931 (x, y). Waɗannan iyakokin suna samar da siffofi huɗu akan ginshiƙin launi. Ana amfani da jurewar ±0.01 ga ma'auni (x, y) a cikin kowane kwandon kayan aiki. Wannan rarrabawa yana tabbatar da cewa duk sassan da lambobi a cikin nuni, da kuma a cikin nunin da yawa, suna fitar da hasken daidaitaccen launin fari, suna guje wa sauye-sauyen launi da ake iya gani.

4. Bincike na Lanƙwasa Aiki

Yayin da abin da aka fitar na PDF ya ambaci lanƙwasa halaye na yau da kullun, takamaiman zane-zane ba a haɗa su a cikin rubutun ba. Dangane da daidaitaccen halayen LED, waɗannan lanƙwasa za su nuna alaƙa tsakanin ƙarfin lantarki na gaba da ƙarfin haske (yana nuna kusan haɓaka layi a cikin kewayon aiki), alaƙa tsakanin ƙarfin lantarki na gaba da ƙarfin lantarki na gaba (lanƙwasa I-V na diode), da bambancin ƙarfin haske tare da yanayin zafi (yana nuna raguwa yayin da zafi ya ƙaru). Fahimtar waɗannan alaƙu yana da mahimmanci don ƙirar da'irori masu ƙarfi waɗanda ke kiyaye daidaitaccen haske a kan yanayin aiki da ake nufi.

5. Bayanin Injiniya da Kunshi

5.1 Girma da Jurewa

Na'urar tana da tsayin lamba 0.39 inches (9.9 mm). An ba da duk girman kunshi a cikin milimita. Jurewar gabaɗaya ±0.25 mm sai dai idan an ƙayyade. Muhimman bayanan injiniya sun haɗa da: jurewar motsin ƙarshen fil ɗin shine ±0.4 mm; kayan waje akan sashe dole ne ya zama ≤10 mils; gurɓataccen tawada a saman dole ne ya zama ≤20 mils; lanƙwasa dole ne ya zama ≤1% na tsayin mai nuna haske; kuma kumfa a cikin sashe dole ne ya zama ≤10 mils. Ana ba da shawarar diamita ramin PCB don fil ɗin shine 1.0 mm.

5.2 Pinout da Gano Polarity

Nunin yana da fil ɗin 12. Zanen da'irar ciki da tebur haɗin fil ɗin sun nuna cewa nau'in multiplex common cathode ne. An sanya anodes na sassan ɗaya (A zuwa G, da DP) da katod na gama gari na lambobi huɗu zuwa takamaiman lambobin fil ɗin. Misali, Fil ɗin 12 shine katod na gama gari na Lamba 1, Fil ɗin 9 na Lamba 2, Fil ɗin 8 na Lamba 3, da Fil ɗin 6 na Lamba 4. Gano daidai fil ɗin katod na gama gari yana da mahimmanci ga tsarin tuƙi na multiplex.

6. Jagororin Gishiri da Haɗawa

Sashen matsakaicin ƙididdiga ya ƙayyade yanayin gishiri: 260°C na dakika 3 a 1/16 inch (1.6mm) a ƙasa da matakin wurin zama. Wannan yayi daidai da daidaitaccen bayanin sake karkatar da mara gubar. Yana da mahimmanci a bi wannan don hana lalacewar zafi ga ƙananan na'urorin LED ko kunshin filastik. Takardar bayanai ta haɗa da ƙwararrun gargadi game da Fitowar Lantarki Mai Tsanani (ESD). LED suna da hankali ga ESD, kuma dole ne a bi hanyoyin sarrafawa da suka dace: amfani da igiyoyin wuyan hannu ko safofin hannu masu hana tsayayyen lantarki, da tabbatar da cewa duk kayan aiki da wuraren aiki suna da tushe daidai. Don ajiya, an ƙayyade kewayon zafin jiki daga -35°C zuwa +85°C, kuma ya kamata a ajiye na'urori a cikin jakunkun su na asali na hana danshi har sai an yi amfani da su.

7. Shawarwarin Aikace-aikace

7.1 Yanayin Aikace-aikace na Yau da Kullun

Wannan nunin yana da kyau ga aikace-aikacen da ke buƙatar karatun lambobi masu bayyanawa, lambobi da yawa. Amfanin gama gari ya haɗa da mitoci na lambobi da yawa, ƙididdiga na mitoci, nunin agogo da ƙidayar lokaci, karatun sarrafa tsarin masana'antu, kayan aikin sa ido na likitanci (misali, na'urorin auna hawan jini), kayan amfani na gida (tandu, microwave), da bangarorin kayan aiki.

7.2 Abubuwan da ake la'akari da ƙira

Da'irar Tuƙi:Ana buƙatar da'irar tuƙi ta multiplex. Wannan ya haɗa da ba da damar katod na gama gari na kowane lamba a jere yayin samar da bayanan anode na sashe da suka dace don wannan lamba. Dole ne sauyawa ya yi sauri don guje wa kallon flicker (yawanci >60Hz sabunta ƙimar).
Iyakancewar Ƙarfin Lantarki:Resistors na iyakancewar ƙarfin lantarki na waje wajibi ne ga kowane anode na sashe (ko kuma ana iya amfani da IC tuƙi mai ƙarfin lantarki mai daidaitawa). Ana ƙididdige ƙimar resistor bisa ga ƙarfin lantarki, ƙarfin lantarki na gaba na LED (amfani da Vf max don ƙira mai aminci), da ƙarfin lantarki na gaba da ake so (kada ya wuce 10mA ci gaba).
Gudanar da Zafi:A aikace-aikacen yanayin zafi mai girma, dole ne a yi amfani da rage ƙarfin lantarki na gaba (0.28mA/°C sama da 25°C). Wannan na iya buƙatar rage ƙarfin lantarki na aiki don ci gaba da kasancewa cikin iyakar raguwar wutar lantarki mai aminci.
Haɗin Gani:Yi la'akari da faɗaɗɗen kusurwar kallo na digiri 130 yayin ƙirar rufin samfur da taga. Ana iya amfani da tacewa ko masu watsawa don haɓaka bambanci a cikin hasken yanayi mai haske.

8. Tambayoyin da ake yawan yi (Dangane da Sigogi na Fasaha)

Q: Menene manufar lambobin rarrabawa akan jakar tattarawa?
A: Lambobin rarrabawa (na Vf, Iv, da Hue) suna ba ku damar zaɓar nunin tare da halayen lantarki da na gani masu kama da juna. Wannan yana da mahimmanci don cimma daidaiton haske da launi a cikin duk lambobi a cikin aikace-aikacenku, musamman idan ana amfani da nunin da yawa a gefe.
Q: Zan iya tuƙa wannan nunin tare da samar da 5V?
A: I, amma dole ne ku yi amfani da resistor mai iyakancewar ƙarfin lantarki a jere tare da kowane sashe. Misali, tare da samar da 5V kuma a ɗauka matsakaicin Vf na 3.2V da If da ake so na 5mA, ƙimar resistor zata zama R = (5V - 3.2V) / 0.005A = 360 Ohms. Daidaitaccen resistor 360Ω ko 390Ω zai dace.
Q: Me yasa akwai ƙimar ƙarfin lantarki na gaba (50mA) da yawa fiye da ƙimar ci gaba (10mA)?
A: Ƙimar kololuwa tana ba da damar aikin bugun jini, wanda shine tushen multiplexing. A cikin saitin multiplexed, kowane lamba yana samun wutar lantarki ne kawai na ɗan lokaci (aikin aiki). Don cimma daidaitaccen haske kamar sashe da aka tuƙa ci gaba, ƙarfin lantarki na bugun jini na iya zama mafi girma, muddin matsakaicin raguwar wutar lantarki ya kasance cikin iyakoki.
Q: Me zai faru idan na wuce kewayon zafin ajiya?
A: Wuce iyakoki, musamman a gefen sama, na iya hanzarta tsufa na ƙananan na'urorin LED da kunshin filastik, yana iya haifar da duhu na epoxy da wuri-wuri (rage darajar lumen) ko gazawar injiniya. A gefen ƙasa, damuwa na zafi zai iya haifar da fashewa.

9. Ka'idar Aiki

LTC-4798SW yana aiki bisa ka'idar electroluminescence a cikin kayan semiconductor. Ƙananan na'urar LED na InGaN tana fitar da hasken shuɗi lokacin da aka yi amfani da ƙarfin lantarki na gaba a kan haɗin p-n. Wannan na'urar tana amfani da shafi na phosphor (ba a bayyana a sarari ba amma an nuna shi ta "LED fari") wanda ke ɗaukar wani ɓangare na hasken shuɗi kuma ya sake fitar da shi azaman hasken rawaya. Haɗin sauran hasken shuɗi da canza hasken rawaya idon ɗan adam yana ganinsa azaman fari. Tsarin sassan bakwai tsari ne na daidaitaccen tsari na LED rectangular bakwai (sassan) waɗanda za a iya sarrafa su ɗaya ɗaya don samar da lambobi (0-9) da wasu haruffa. Gine-ginen katod na gama gari na multiplex fasaha ce ta wayoyi wanda ke rage adadin fil ɗin sarrafawa daga (sassan 7 + 1 ma'anar goma) * lambobi 4 = fil ɗin 32 zuwa anodes na sashe 7 + katod na lambobi 4 + anode DP gama gari 1 = fil ɗin 12. Ana samun wannan ta hanyar saurin zagayawa wutar lantarki ga kowane lamba a jere yayin haskaka sassan da suka dace don wannan lamba.