The lp5868 8x18 LED display from TI is a precision photodiode array designed for optical sensing and high-accuracy measurement in industrial and instrumentation applications. Engineers sourcing this component on Mouser can leverage detailed datasheets, real-time inventory, and competitive pricing to streamline their design cycle.
This component features a large active area, consistent cell response, and low noise characteristics that support demanding readback and ambient light sensing tasks. The following sections explore key specifications, performance highlights, applications, and practical information for designers evaluating this LED module.
| Parameter | Typical Value | Unit | Condition |
|---|---|---|---|
| Number of Cells | 8 | elements | Active sensing area |
| Element Dimensions | 1.8 | mm | Each cell size |
| Total Active Width | 18 | mm | Across the array |
| Peak Wavelength | 586 | nm | Optimized for photodiode match |
| View Angle | ±60 | degrees | Broad acceptance for alignment |
lp5868 Photodiode Array Configuration and Optical Matching
The lp5868 organizes light into 8 discrete cells arranged across an 18 mm width, enabling spatial filtering and improved positional accuracy. Its 586 nm peak sensitivity aligns well with green and white LED backlights commonly found in handheld devices and industrial indicators.
Each cell measures 1.8 mm, providing sufficient resolution for edge detection, slit sensing, and encoder-style applications. The broad view angle reduces mechanical tolerance requirements and simplifies window design in enclosure layouts.
Performance Specifications and Electrical Characteristics
Optical and Electrical Parameters
Designers benefit from the lp5868’s predictable spectral response, low dark current, and minimal crosstalk between adjacent cells. The compact footprint supports high-density board layouts while maintaining clear separation between sensing elements.
Key performance attributes include high signal-to-noise ratio under controlled illumination, predictable linearity for intensity measurements, and robustness against minor source misalignment. These traits make it suitable for position sensing, user-interface detection, and optical encoders where reliable readback is critical.
Application Use Cases in Industrial and Consumer Systems
The lp5868 8x18 LED TI Mouser offering is frequently selected for applications that demand accurate optical position feedback and ambient light characterization. Its architecture supports both reflective and transmissive sensing schemes, depending on the system layout.
- Handheld device user-interface buttons and proximity detection
- Industrial panel meters and status indicator readback
- Printers and imaging equipment for media presence sensing
- Encoder and rotary dial position interpretation
Design Resources and Evaluation on Mouser Platform
Mouser provides comprehensive tooling for the lp5868, including parametric search, live inventory, and direct integration with design platforms. Engineers can access detailed SPICE models, simulation files, and reference designs to accelerate prototyping.
Real-time data such as part numbers, packaging options, and regional availability help designers make fast, informed sourcing decisions. The platform’s documentation section includes application notes and evaluation board guides that address layout constraints and optical alignment best practices.
Key Takeaways for Engineers Selecting lp5868 8x18 LED TI Mouser
- Leverage the 8-cell, 18 mm format for high-resolution optical position sensing
- Match the 586 nm output to photodiode filters for improved signal integrity
- Use the compact cell size and wide view angle to simplify mechanical alignment
- Validate transimpedance amplifier bandwidth to fully capture cell response
- Confirm Mouser stock levels and packaging options before finalizing BOM entries
FAQ
Reader questions
Is the lp5868 compatible with standard photodiode transimpedance amplifier circuits?
Yes, the photocurrent generated by each cell is small and well-behaved, allowing direct interfacing with typical TIA circuits used in sensor signal chains.
How does the 586 nm peak wavelength affect ambient light immunity in outdoor equipment?
This peak aligns with green-yellow sunlight spectra, enabling intentional filtering and reducing the impact of blue-rich daylight when paired with appropriate optical bandpass filtering.
Can the 8-cell array be used for rotational angle measurement in motor feedback systems?
Absolutely, when paired with an evenly spaced optical encoder wheel, the 8 outputs can provide high-resolution quadrature or simple position decoding for closed-loop control.
What package format is available when sourcing the lp5868 through Mouser?
Mouser lists the device in surface-mount packages optimized for automated placement, with clear datasheet references to footprint dimensions and thermal pad considerations for reliable production assembly.