OPT3005 조도 센서 -I2C
(AMBIENT 22 CLICK)
개요
- 본 제품은 OPT3005 조도 센서 -I2C 입니다.
- OPT3005 칩을 기반으로 디자인된 제품으로 빛의 강도를 측정하여 디지털 신호로 출력하여 줍니다.
- 센서는 사람의 눈과 같은 spectral response를 가지도록 디자인되었습니다.
- 20mlux에서 166klux까지 측정이 가능합니다.
특징
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HOW DOES IT WORK?
Ambient 22 Click is based on the OPT3005, a single-chip lux meter from Texas Instruments, measuring light intensity as visible by the human eye. The device's precision spectral response and extreme IR rejection enable the OPT3005 to accurately meter light intensity as seen by the human eye regardless of the light source and any stray light from 850nm or 940nm active illumination. The IR rejection also helps to maintain high accuracy when this board is mounted under dark glass, especially with active 850nm or 940nm NIR illumination. This board is designed for applications that create light-based experiences for humans and is a preferred replacement for photodiodes, photoresistors, or other ambient light sensors with less human eye matching and IR rejection.
The OPT3005 measures 20mlux up to 166klux over a 23-bit effective dynamic range. It can be configured into an automatic full-scale, range-setting mode that always selects the best full-scale range setting for the lighting conditions. This mode frees the user from having to program their software for potential iterative measurement cycles and readjustment of the full-scale range until optimal for any given measurement. The OPT3005 can also operate continuously or in single-shot measurement modes.
Ambient 22 Click communicates with an MCU using the standard I2C 2-Wire interface to read data and configure settings, supporting High-Speed mode. Also, the OPT3005 allows choosing the least significant bits (LSB) of its I2C slave address using the SMD jumper labeled ADDR SEL. It also possesses an additional interrupt signal, routed on the INT pin of the mikroBUS™ socket, indicating when a specific interrupt event occurs, such as detecting a meaningful change in light intensity.
This Click board™ can only be operated with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used as a reference for further development.
SPECIFICATIONS
Type Optical Applications Can be used for obtaining ambient light data in applications like display optical-intensity, industrial, or commercial lighting control On-board modules OPT3005 - single-chip lux meter from Texas Instruments Key Features Low power consumption, precision optical filtering to match human eye, corresponds to a dark window because of high sensitivity, I2C interface, wide and flexible operational range, effective dynamic range with automatic gain ranging, and more Interface I2C Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V