CXLE87133AD is an integrated DMX512 protocol decoding and four-channel high-precision constant current output LED driver chip. It supports up to 65536(16-bit) grayscale output and has a 4K port refresh rate, effectively eliminating the problem of strobe stripes when shooting with camera equipment. The chip has built-in EPROM, which supports online code writing and parameter configuration without external memory devices, greatly simplifying the system design and on-site debugging process. Its compact ESSOP10 package combines good heat dissipation performance for high-density luminaire designs.
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[ CXLE87133AD ]"
CXLE87133AD: high performance DMX512 LED driver chip, reshaping intelligent lighting control system
With the rapid development of intelligent lighting and professional lighting art, a high-performance and high-reliability LED driver chip has become the core of building a complex lighting system. As a multi-channel constant current driver chip specially designed for DMX512 differential parallel protocol, CXLE87133AD has become an ideal choice for architectural appearance lighting, stage lighting and large-scale decorative lighting projects with its excellent gray scale performance, efficient refresh rate and flexible configuration ability. In this article, JTMIC will provide you with an in-depth analysis of the core advantages and application solutions of the CXLE87133AD.
1. Chip Overview: Driver Solutions for Professional Lighting
CXLE87133AD is an integrated DMX512 protocol decoding and four-channel high-precision constant current output LED driver chip. It supports up to 65536(16-bit) grayscale output and has a 4K port refresh rate, effectively eliminating the problem of strobe stripes when shooting with camera equipment. The chip has built-in EPROM, which supports online code writing and parameter configuration without external memory devices, greatly simplifying the system design and on-site debugging process. Its compact ESSOP10 package combines good heat dissipation performance for high-density luminaire designs.
2. core features: technical advantages comprehensive analysis
2.1. Comprehensive protocol compatibility and adaptive decoding.
The chip is fully compatible with and extends the DMX512(1990) protocol, and supports adaptive decoding within the transmission rate range of 200Kbps to 1000Kbps without manual setting. The maximum addressing capacity is up to 4096 channels, easily cope with large and complex light networks.
2.2. Excellent grayscale and refresh performance
Through advanced gamma correction technology (gamma 2.2), the traditional 256 level gray scale is upgraded to 65536 level, and the color transition is extremely smooth and delicate. Using frequency multiplication technology, the port refresh rate doubles with the increase of gray level, reaching 4KHz at the 16th gray level, which completely solves the stripe trouble under high-speed shooting.
2.3. Flexible online code writing and parameter configuration.
Innovative AB line online code writing technology, address writing can be completed without disassembling lamps. Code writing and parameter setting are independent of each other and can be set separatelyPower-on light status,Field Mode(1/2/4 field),No signal behaviorand64-level current regulationAll settings take effect immediately, greatly improving engineering efficiency.
2.4. High precision constant current output
Provide R, G, B, W four independent constant current output channels, factory default 18mA per channel, up to 64mA. The current accuracy difference between channels is controlled within 3%, and the difference between chips is 5%, ensuring color consistency and brightness uniformity.
2.5. Powerful anti-interference and reliability design
Built-in differential input module and special anti-interference circuit, with high common mode rejection ratio and input impedance. Support 2.5V to 6.5V wide voltage operation, built-in overvoltage, over temperature and other multiple protection mechanisms, industrial temperature range (-40 ℃ to 85 ℃) to ensure stable operation in harsh environments.
3. typical application scenarios: enabling multiple lighting fields
• Architectural landscape lighting: Wall washer, line lamp, point light source
• Professional performing lightingStage PAR lights, effect lamps, RGBW projection lights
• Indoor and outdoor display systemVideo walls, media facades, decorative pixel strips
• Smart City LightingBridges, landmarks, public art installations
4. field mode selection: taking into account data efficiency and driving ability
CXLE87133AD supports flexible field mode settings, users can choose according to actual application needs, and achieve the best balance between data volume and driving ability:
• 4 Field Mode: R, G, B, W four-channel independent control, suitable for full-color dynamic change scenes.
Note: 1. For monochrome or other expanded stream applications, 1-field mode (software selection) can be used, and RGBW 4 channels correspond to the same address data,
The output is the same, and the figure shows a parallel expansion application.
4-field mode, factory default, the following figure is RGB, 3-color application
• 2 Field Mode: RG and BW group control, while reducing the amount of data, can realize current expansion through parallel channels.
Note: 1. When two-color or other applications need to expand the flow, 2-field mode (software selection) can be adopted, and RG(BW) channel corresponds to the same place
Address data, the output is the same, the figure is parallel expansion application.
• 1 Field Mode: Four channels in parallel output the same data, the maximum output current can reach 4 times that of a single channel, specially designed for high-brightness monochrome applications.
Note: 1. For monochrome or other expanded stream applications, 1-field mode (software selection) can be used, and RGBW 4 channels correspond to the same address data,
The output is the same, and the figure shows a parallel expansion application.
• Component Selection Table
5. technology design points: to ensure the optimal performance of the system
5.1. PCB Layout Recommendations: A/B differential signal lines should be wired in parallel, using twisted pair or shielded wire to enhance anti-interference. Avoid interspersed other signal lines between the/B lines.
5.2. Power supply decoupling: Arrange high-quality 104(100nF) chip capacitors near the VDD pin of the chip to ensure power supply stability.
5.3. Terminal matching: The long-distance 485 bus shall be connected with a 120Ω matching resistor in parallel at the end to suppress signal reflection.
5.4. Code Writing Guide: The test procedure shall be used to verify the communication quality of A/B line before and after code writing. After successfully writing the code, the lamp will indicate with a specific color (such as yellow light, white light) to visually display the breakpoint position.
6. Pins and Functions
7. Summary
With its excellent 65536-level gray performance, high 4K port refresh rate, comprehensive DMX512 protocol compatibility and highly flexible configuration functions, CXLE87133AD provides a powerful and reliable core driver for high-end LED lighting systems. Whether in the pursuit of the ultimate color expression of the stage, or in the long-term stable operation of the architectural appearance lighting project, it can show excellent performance.
For CXLE87133AD samples, complete technical information or application design, please visitJTMIC official websiteOr contact our technical support team.
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