TSL25911FN
Overview
The TSL25911FN is a high-sensitivity light-to-digital converter that transforms light intensity into a digital signal output over I2C. It features a dual-diode architecture that enables accurate ambient light sensing by separately measuring broadband and infrared spectra, providing a massive 600M:1 dynamic range. This 16-bit resolution sensor is designed for operation from 2.7V to 3.6V in a compact 6-DFN package.
Why Choose This Part
The primary advantage is the ultra-high dynamic range of 600M:1, allowing it to operate in lighting conditions ranging from near-darkness to bright sunlight. It offers programmable gain and integration times, allowing engineers to tune sensitivity for specific application needs. Its low 2.3uA sleep current makes it ideal for power-constrained battery-operated designs.
Applications
Key Specifications
Getting Started
To begin development, connect the TSL25911FN to an I2C controller and pull the interrupt pin to a microcontroller GPIO if using the persistence filter features. Many engineers use the Adafruit TSL2591 breakout board for rapid prototyping before integrating the 2mm x 2.4mm ODFN package onto a custom PCB. The device address is fixed at 0x29, and initialization requires setting the integration time and gain registers to match the expected lighting environment.
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