BH1745NUC
Overview
The BH1745NUC is a high-sensitivity digital color sensor IC with an I2C interface that detects Red, Green, Blue, and Infrared light. It features an integrated IR-cut filter to ensure accurate color sensing under various light sources and supports a wide dynamic range from 0.005 lx to 40k lx. The sensor is housed in a compact 2.1mm x 2.0mm WSON package, making it ideal for space-constrained mobile and industrial designs.
Why Choose This Part
The BH1745NUC offers excellent IR rejection and supports low-transmittance (dark) windows, which is critical for sensors placed behind glass or plastic housings. It features ultra-low power consumption with a 0.8uA standby current and integrates 50Hz/60Hz light noise rejection for stable readings in indoor environments.
Applications
Key Specifications
Getting Started
Connect the sensor via the I2C bus using a 2.3V to 3.6V supply, ensuring the 1.8V logic interface compatibility matches your host MCU. Developers can utilize the programmable interrupt function to wake the system only when specific light thresholds are met, reducing overall system power consumption. ROHM provides evaluation boards and sample code to facilitate rapid integration of the color-to-digital conversion algorithms.
