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LTP-2157AKA LED Nunin Tsarin Digo Datasheet - Tsawon Inci 2.0 (50.8mm) - Launi Super Orange - Tsari 5x7 - Takardar Fasaha ta Hausa

Takardar bayanan fasaha don LTP-2157AKA, nunin LED mai tsarin digo 5x7 na inci 2.0 wanda ke amfani da guntu na LED Super Orange na AlInGaP. Ya haɗa da ƙayyadaddun bayanai, pinout, ƙima, da halaye.
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Gida » Takaddun » LTP-2157AKA LED Nunin Tsarin Digo Datasheet - Tsawon Inci 2.0 (50.8mm) - Launi Super Orange - Tsari 5x7 - Takardar Fasaha ta Hausa

Teburin Abubuwan Ciki

1. Bayanin Samfur

LTP-2157AKA tsari ne na nunin LED mai tsarin digo 5x7, wanda aka tsara don nunin haruffa da lambobi. Babban aikinsa shine nuna haruffa daga daidaitattun saitin lambobi kamar USASCII da EBCDIC. Babban fa'idar wannan na'urar yana cikin amfani da fasahar semiconductor na AlInGaP (Aluminum Indium Gallium Phosphide) don guntun LED, wanda ke samar da fitar da haske mai launin Super Orange. Nunin yana da fuskar launin toka da launin farar digo, wanda ke haɓaka bambanci don ingantaccen karantawa. An rarraba na'urar don ƙarfin haske, yana tabbatar da daidaiton haske a cikin raka'a. Tsarin sa na ƙwaƙƙwaran yana ba da babban aminci, kuma ƙarancin wutar lantarki ya sa ya dace da aikace-aikacen lantarki daban-daban.

1.1 Siffofi na Asali da Aikace-aikacen Manufa

Mahimman siffofi da ke bayyana wannan samfurin sun haɗa da tsayin harafin matrix na inci 2.0 (50.8 mm), wanda ke ba da kyakkyawan gani daga nesa. Yana aiki tare da jirgin sama ɗaya kuma yana ba da fa'idar kallon faɗi, yana sa bayanan da aka nuna su kasance masu isa daga matsayi daban-daban. Tsarin 5x7 tare da ginin zaɓin XY yana ba da damar sarrafa haɗakarwa mai inganci. Wani muhimmin siffa shine iya tara shi a kwance, yana ba da damar ƙirƙirar nunin haruffa da yawa ta hanyar daidaita raka'a da yawa a gefe. Na'urar ta dace kai tsaye da daidaitattun lambobin haruffa. Waɗannan halayen sun sa LTP-2157AKA ya zama manufa don aikace-aikace kamar allunan kayan aikin masana'antu, tashoshin siyarwa, nunin bayanai na asali, karatun kayan aikin gwaji, da sauran tsarin da ke buƙatar dogaro, ƙananan-zuwa-matsakaicin ƙarancin fitarwa na haruffa da lambobi.

2. Ƙayyadaddun Fasaha da Fassarar Manufa

Wannan sashe yana ba da cikakken bincike na haƙiƙa game da sigogin lantarki, na gani, da na jiki na na'urar kamar yadda aka ayyana a cikin takardar bayanan.

2.1 Matsakaicin Matsakaicin Ƙimar

Matsakaicin Matsakaicin Ƙimar yana ayyana iyakokin damuwa waɗanda za su iya haifar da lalacewa na dindindin ga na'urar. Waɗannan ba sharuɗɗan aiki na yau da kullun ba ne.

2.2 Halayen Lantarki & Na Gani

Ana auna waɗannan ma'auni a ƙarƙashin ƙayyadaddun yanayin gwaji (yawanci Ta=25°C) kuma suna wakiltar aikin yau da kullun.

. Binning System Explanation

The datasheet indicates the device is \"Categorized for Luminous Intensity.\" This implies a binning or sorting process post-manufacturing. While specific bin codes are not listed, typical categorization for such displays involves grouping units based on measured luminous intensity under standard test conditions. This ensures that when multiple displays are used together, the brightness variation between them is minimized, providing a consistent visual output. Designers should verify the available intensity bins from the supplier for critical applications requiring matched brightness.

. Performance Curve Analysis

The datasheet references \"Typical Electrical / Optical Characteristic Curves.\" Although the specific graphs are not provided in the text, standard curves for such devices typically include:

These curves allow designers to predict performance under non-standard conditions and optimize their driver circuitry.

. Mechanical and Package Information

The device's package dimensions are provided in millimeters with a general tolerance of ±0.25 mm. The specific drawing is referenced but not detailed in the text. Key mechanical aspects include the overall footprint, height, and the spacing of the 14 pins. The pin arrangement is designed for through-hole mounting on a printed circuit board (PCB). The gray face and white dot color are part of the package design to improve contrast.

.1 Pin Connection and Internal Circuit

The display has 14 pins. The internal circuit diagram shows a matrix configuration where the anodes of the LEDs are connected by rows and the cathodes by columns (or vice-versa, as per the pinout table). This is a common common-anode or common-cathode matrix architecture that minimizes the number of control pins required (5 rows + 7 columns = 12 control lines instead of 5*7=35). The pinout table specifies the function of each pin:

. Soldering and Assembly Guidelines

The primary guideline provided is for the soldering process: the device can withstand a maximum solder temperature of 260°C for a maximum of 3 seconds, measured 1.6mm (1/16 inch) below the seating plane. This is a standard reflow profile constraint. For wave soldering, standard practices for through-hole components should be followed. General handling precautions for static-sensitive devices (ESD) should be observed, although not explicitly stated for this LED product. Storage should be within the specified temperature range of -35°C to +85°C in a dry environment.

. Application Suggestions and Design Considerations

.1 Typical Application Circuits

The LTP-2157AKA requires an external driver circuit. Due to its matrix structure, multiplexing is the standard driving method. This involves sequentially activating one row (or column) at a time while providing the appropriate data signals to the columns (or rows). A microcontroller with sufficient I/O pins or a dedicated LED display driver IC (like the MAX7219 or similar) is typically used. The driver must supply the correct current, respecting the peak and average current ratings. Current-limiting resistors are mandatory for each column or row line to set the forward current (IF). The value is calculated using the formula: R = (Vsupply- VF- Vdriver_sat) / IF.

.2 Design Considerations

. Technical Comparison and Differentiation

Compared to older technology like standard GaAsP or GaP LEDs, the AlInGaP technology in the LTP-2157AKA offers significantly higher luminous efficiency, resulting in brighter output for the same current, and better color purity. Compared to simple 7-segment displays, the 5x7 dot matrix format provides true alphanumeric capability, allowing for the display of letters, numbers, and simple symbols. The 2.0-inch height is larger than many common character displays, offering superior visibility. The horizontal stackability is a key differentiator from displays with fixed multi-character modules, providing design flexibility.

. Frequently Asked Questions (Based on Technical Parameters)

Q1: Can I drive this display with a constant DC current on all dots simultaneously?
A: Theoretically possible but impractical. It would require 35 independent current-limited channels. Multiplexing is the standard and efficient method.

Q2: What is the difference between Peak Emission Wavelength and Dominant Wavelength?
A: Peak wavelength is where the most optical power is emitted. Dominant wavelength is the single-wavelength equivalent perceived by the human eye. They are often close but not identical, especially for broader spectra.

Q3: How do I interpret the 1/16 duty cycle in the luminous intensity test condition?
A: The intensity is measured when the LED is pulsed with a 32mA current in a waveform with a 1/16 duty cycle. This simulates a multiplexed driving scheme where each row is active for 1/16th of the total cycle time. The reported intensity value is the average over time.

Q4: Why are pins 4 & 11 and 5 & 12 internally connected?
A> This is likely due to the internal layout of the matrix to simplify the chip bonding or substrate routing. Electrically, it means these pin pairs are shorted together. In your circuit, you must connect them to the same node.

. Practical Use Case Example

Scenario: Designing a simple 4-digit temperature readout for an industrial oven.
The system uses a microcontroller with a temperature sensor. Four LTP-2157AKA displays are stacked horizontally. The microcontroller's firmware contains a font map for digits 0-9, the degree symbol, and 'C'. Using a multiplexing routine, it cycles through the four displays (acting as four sets of rows/columns), calculating the appropriate column data for each row based on the current digit to be shown. Current-limiting resistors are placed on the column lines. The refresh rate is set to 100 Hz to eliminate flicker. The high brightness and wide viewing angle ensure the temperature is readable from various positions on the factory floor. The industrial temperature rating of the display ensures reliable operation in the hot environment near the oven.

. Operating Principle Introduction

The LTP-2157AKA is based on semiconductor electroluminescence. The AlInGaP chip structure forms a p-n junction. When a forward voltage exceeding the junction's threshold is applied, electrons and holes recombine in the active region, releasing energy in the form of photons. The specific alloy composition of AlInGaP determines the bandgap energy, which directly corresponds to the orange wavelength of light emitted (~621 nm). The 5x7 matrix is formed by individually addressable LED dice placed at the intersections of row and column conductors on a substrate. By selectively applying voltage to a specific row and column, only the LED at that intersection is forward-biased and lights up.

. Technology Trends and Context

AlInGaP technology represents a significant advancement in visible LED efficiency for red, orange, and yellow colors. It has largely superseded older technologies like GaAsP. Current trends in display technology are moving towards higher-density matrices (e.g., 8x8, 16x16) and full-color RGB matrices. However, single-color, low-resolution dot matrix displays like the 5x7 remain highly relevant for cost-sensitive, reliability-critical applications where simple alphanumeric information is sufficient. Their advantages include simplicity, robustness, low power consumption, and excellent longevity. The principle of matrix addressing remains fundamental to larger and more complex display technologies, including OLED and microLED displays.

Kalmomin Ƙayyadaddun LED

Cikakken bayanin kalmomin fasaha na LED

Aikin Hasken Wutar Lantarki

Kalma Naúrar/Wakilci Bayanin Sauri Me yasa yake da muhimmanci
Ingancin Hasken Wuta lm/W (lumen kowace watt) Fitowar haske kowace watt na wutar lantarki, mafi girma yana nufin mafi ingancin kuzari. Kai tsaye yana ƙayyade matakin ingancin kuzari da farashin wutar lantarki.
Gudun Hasken Wuta lm (lumen) Jimillar hasken da tushe ke fitarwa, ana kiransa "haske". Yana ƙayyade ko hasken yana da haske sosai.
Kusurwar Dubawa ° (digiri), misali 120° Kusurwar da ƙarfin haske ya ragu zuwa rabi, yana ƙayyade faɗin haske. Yana shafar kewar haskakawa da daidaito.
Zafin Launi (CCT) K (Kelvin), misali 2700K/6500K Zafi/sanyin haske, ƙananan ƙimomi rawaya/zafi, mafi girma fari/sanyi. Yana ƙayyade yanayin haskakawa da yanayin da suka dace.
CI / Ra Ba naúrar, 0–100 Ikon ba da launukan abubuwa daidai, Ra≥80 yana da kyau. Yana shafar sahihancin launi, ana amfani dashi a wurare masu buƙatu kamar shaguna, gidajen tarihi.
SDCM Matakan ellipse MacAdam, misali "5-mataki" Ma'aunin daidaiton launi, ƙananan matakai suna nufin mafi daidaiton launi. Yana tabbatar da daidaiton launi a cikin rukunin LED iri ɗaya.
Matsakaicin Tsawon Raɗaɗin Hasken nm (nanomita), misali 620nm (ja) Tsawon raɗaɗin haske daidai da launin LED masu launi. Yana ƙayyade launin ja, rawaya, kore LED masu launi ɗaya.
Rarraba Bakan Hasken Layin tsawon raɗaɗi da ƙarfi Yana nuna rarraba ƙarfi a cikin tsawon raɗaɗin haske. Yana shafar ba da launi da ingancin launi.

Ma'auni na Lantarki

Kalma Alamar Bayanin Sauri Abubuwan ƙira
Ƙarfin lantarki na gaba Vf Mafi ƙarancin ƙarfin lantarki don kunna LED, kamar "maƙallan farawa". Ƙarfin lantarki na injin dole ya zama ≥Vf, ƙarfin lantarki yana ƙara don LED a jere.
Ƙarfin lantarki na gaba If Ƙimar ƙarfin lantarki don aikin LED na yau da kullun. Yawanci tuƙi mai ƙarfi akai-akai, ƙarfin lantarki yana ƙayyade haske da tsawon rai.
Matsakaicin Ƙarfin lantarki na bugun jini Ifp Matsakaicin ƙarfin lantarki mai jurewa na ɗan lokaci, ana amfani dashi don duhu ko walƙiya. Fadin bugun jini da sake zagayowar aiki dole ne a sarrafa su sosai don guje wa lalacewa.
Ƙarfin lantarki na baya Vr Matsakaicin ƙarfin lantarki na baya da LED zai iya jurewa, wanda ya wuce zai iya haifar da rushewa. Dangane dole ne ya hana haɗin baya ko ƙarfin lantarki.
Juriya na zafi Rth (°C/W) Juriya ga canja wurin zafi daga guntu zuwa solder, ƙasa yana da kyau. Babban juriya na zafi yana buƙatar zubar da zafi mai ƙarfi.
Rigakafin ESD V (HBM), misali 1000V Ikon jurewa zubar da wutar lantarki, mafi girma yana nufin ƙasa mai rauni. Ana buƙatar matakan hana wutar lantarki a cikin samarwa, musamman ga LED masu hankali.

Gudanar da Zafi & Amincewa

Kalma Ma'aunin maɓalli Bayanin Sauri Tasiri
Zazzabin Haɗin gwiwa Tj (°C) Ainihin yanayin aiki a cikin guntun LED. Kowane raguwa 10°C na iya ninka tsawon rai; yayi yawa yana haifar da lalacewar haske, canjin launi.
Ragewar Lumen L70 / L80 (sa'o'i) Lokacin da haske ya ragu zuwa 70% ko 80% na farko. Kai tsaye yana ayyana "tsawon sabis" na LED.
Kula da Lumen % (misali 70%) Kashi na hasken da aka riƙe bayan lokaci. Yana nuna riƙon haske akan amfani na dogon lokaci.
Canjin Launi Δu′v′ ko ellipse MacAdam Matsakaicin canjin launi yayin amfani. Yana shafar daidaiton launi a cikin yanayin haskakawa.
Tsufa na Zafi Lalacewar kayan aiki Lalacewa saboda yanayin zafi na dogon lokaci. Zai iya haifar da raguwar haske, canjin launi, ko gazawar buɗe kewaye.

Tufafi & Kayan Aiki

Kalma Nau'ikan gama gari Bayanin Sauri Siffofi & Aikace-aikace
Nau'in Kunshin EMC, PPA, Yumbu Kayan gida masu kare guntu, samar da hanyar sadarwa ta gani/zafi. EMC: juriya mai kyau na zafi, farashi mai rahusa; Yumbu: mafi kyawun zubar da zafi, tsawon rai.
Tsarin Guntu Gaba, Guntu Juyawa Tsarin na'urorin lantarki na guntu. Juyawar guntu: mafi kyawun zubar da zafi, inganci mafi girma, don ƙarfi mai ƙarfi.
Rufin Phosphor YAG, Silicate, Nitride Yana rufe guntu shuɗi, yana canza wasu zuwa rawaya/ja, yana haɗa su zuwa fari. Phosphor daban-daban suna shafar inganci, CCT, da CRI.
Ruwan tabarau/Optics Lefi, Microlens, TIR Tsarin gani a saman yana sarrafa rarraba haske. Yana ƙayyade kusurwar dubawa da layin rarraba haske.

Kula da Inganci & Rarraba

Kalma Abun rarraba Bayanin Sauri Manufa
Kwalin Gudun Hasken Lambar misali 2G, 2H An tattara su ta hanyar haske, kowace ƙungiya tana da ƙananan/matsakaicin ƙimar lumen. Yana tabbatar da daidaiton haske a cikin jeri ɗaya.
Kwalin Ƙarfin lantarki Lambar misali 6W, 6X An tattara su ta hanyar kewayon ƙarfin lantarki na gaba. Yana sauƙaƙe daidaitawar tuƙi, yana inganta ingancin tsarin.
Kwalin Launi Ellipse MacAdam 5-mataki An tattara su ta hanyar daidaitattun launi, yana tabbatar da ƙuntataccen kewayon. Yana ba da garantin daidaiton launi, yana guje wa launi mara daidaituwa a cikin kayan aikin.
Kwalin CCT 2700K, 3000K da sauransu An tattara su ta hanyar CCT, kowanne yana da madaidaicin kewayon daidaitawa. Yana cika buƙatun CCT na yanayi daban-daban.

Gwaji & Takaddun Shaida

Kalma Matsakaicin/Gwaji Bayanin Sauri Muhimmanci
LM-80 Gwajin kula da lumen Haskakawa na dogon lokaci a yanayin zafi akai-akai, yana rikodin lalacewar haske. Ana amfani dashi don kimanta rayuwar LED (tare da TM-21).
TM-21 Matsakaicin kimanta rayuwa Yana kimanta rayuwa a ƙarƙashin yanayi na ainihi bisa bayanan LM-80. Yana ba da hasashen kimiyya na rayuwa.
IESNA Ƙungiyar Injiniyoyin Haskakawa Yana rufe hanyoyin gwajin gani, lantarki, zafi. Tushen gwaji da masana'antu suka amince.
RoHS / REACH Tabbatarwar muhalli Yana tabbatar da babu abubuwa masu cutarwa (darma, mercury). Bukatar shiga kasuwa a duniya.
ENERGY STAR / DLC Tabbatarwar ingancin kuzari Tabbatarwar ingancin kuzari da aiki don samfuran haskakawa. Ana amfani dashi a cikin sayayyan gwamnati, shirye-shiryen tallafi, yana haɓaka gasa.