BH1620FVC 조도 센서
(AMBIENT 12 CLICK)
개요
- 본 제품은 BH1620FVC 조도 센서입니다.
- 사람 눈과 비슷한 감도를 가지게 설계된 센서로 밝기에 비례하여 아날로그 전류 값을 출력합니다.
- 3.3V/5V 시스템과 사용이 가능하며, 아날로그 전류 출력 및 I2C 인터페이스를 가집니다.
특징
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HOW DOES IT WORK?
Ambient 12 Click as its foundation uses the BH1620FVC, an analog current-output type ambient light sensor from Rohm Semiconductor. The BH1620FVC is composed of photodiodes, amplifiers, and current mirror circuits, where the output current, in proportion to brightness, is converted to the voltage value by an external resistor. It is characterized by spectral sensitivity close to human eyes sensitivity with low sensitivity variations of +/-15%.
It also has four configurable modes of operation, shutdown mode associated with three gain modes: high-gain mode with an illuminance detection range of 1000lx, medium-gain mode up to 10.000lx, and low-gain mode up to 100.000lx. The desire gain mode is selected through CS and PWM pins of the mikroBUS™ socket labeled as GC1 and GC2.
The output voltage of the BH1620FVC can be converted to a digital value using MCP3221, a successive approximation A/D converter with a 12-bit resolution from Microchip, using a 2-wire I2C compatible interface, or can be sent directly to an analog pin of the mikroBUS™ socket labeled as AN. Selection can be performed by onboard SMD jumper labeled as A/D SEL to an appropriate position marked as AN and ADC.
This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VIO SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
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Type Optical Applications Can be used for obtaining ambient light data for adjusting brightness in applications that require power saving and better visibility On-board modules BH1620FVC - analog current-output type ambient light sensor from Rohm Semiconductor Key Features Low power consumption, spectral sensitivity close to human eyes sensitivity, output current in proportion to brightness, built-in shutdown function, configurable gain mode, low sensitivity variation, and more Interface Analog,I2C Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V or 5V