SKU: SENS-3249
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ROHM Semiconductor BH1750FVI-TR Ambient Light Sensor IC - I2C Digital Output, 560nm

₹86.00 (Inclusive of all taxes)
Out of Stock

The ROHM Semiconductor BH1750FVI-TR is a digital ambient light sensor IC with an I2C bus interface, designed for high-resolution illuminance measurement from 1 to 65535 lux. It is ideal for backlight control in portable electronics and integrates seamlessly with microcontrollers like Arduino, Raspberry Pi, and ESP32.

Features

  • I2C digital interface with Fast and Standard mode support for easy microcontroller integration.
  • High-resolution illuminance detection from 1 to 65535 lux with a spectral response close to the human eye.
  • Integrated 50Hz/60Hz light noise rejection for stable readings under artificial lighting.
  • Low-power operation with a power-down function, suitable for battery-powered devices.
  • Compact DTSOP-6 surface-mount package for space-constrained PCB designs.

Out of stock

Description

The BH1750FVI-TR is a single-chip digital ambient light sensor that converts illuminance directly into a 16-bit digital value via an I2C interface, eliminating the need for external signal conditioning components. Its photodiode and integrated amplifier provide a spectral sensitivity optimized for 560 nm, closely matching the human eye’s photopic response for accurate ambient light assessment.

Engineered for reliability, the sensor features built-in noise rejection for AC-powered lighting flicker (50Hz/60Hz) and exhibits minimal dependency on light source type, performing consistently under incandescent, fluorescent, halogen, LED, and sunlight. Its 1.8V logic interface and wide operating voltage range ensure compatibility with modern 3.3V and 5V logic systems commonly found in embedded designs.

Key Features

  • Digital I2C bus interface with selectable slave addresses for system flexibility.
  • Wide dynamic range from 1 lux up to 65535 lux with high 16-bit resolution.
  • Integrated optical window compensation function extends effective range up to 100,000 lux.
  • Low current consumption enabled by a dedicated power-down function.
  • Minimal influence from infrared light sources for accurate visible light measurement.
  • Compact DTSOP-6 surface-mount package with 2.54mm pitch for high-density PCB layouts.
  • ROHS compliant construction meeting environmental and safety standards.
  • Stable performance across a wide -40°C to +85°C operating temperature range.

Applications

  • Automatic backlight dimming for mobile phone LCDs and keypads.
  • Ambient light adaptation in LCD TVs, monitors, and digital signage.
  • Power-saving light management in notebook PCs and tablet displays.
  • Exposure control and flash adjustment in digital cameras and camcorders.
  • User interface brightness optimization in portable gaming devices and PDAs.

Technical Specifications

Manufacturer Part NumberBH1750FVI-TR
BrandROHM Semiconductor
Sensor TypeDigital Ambient Light Sensor IC
InterfaceI2C (Fast/Standard Mode)
Supply Voltage (Max)4.5 V
Logic Input Interface1.8 V
Sink Current7 mA
Measurement Range1 to 65535 lux (extendable to 100,000 lux)
Spectral Sensitivity Peak~560 nm
Light Noise Rejection50 Hz / 60 Hz
Measurement Variation±20%
Operating Temperature-40°C to +85°C
Package TypeDTSOP-6
Pitch2.54 mm
ComplianceROHS

Frequently Asked Questions

What is the communication interface for the BH1750FVI-TR sensor?

The BH1750FVI-TR uses a standard I2C (Inter-Integrated Circuit) digital bus interface, supporting both Fast and Standard modes. This allows for easy connection to microcontrollers like Arduino, Raspberry Pi, or ESP32 using just two wires (SCL and SDA), with a selectable slave address for bus flexibility.

What is the operating voltage range and logic level for this IC?

The sensor's maximum supply voltage is 4.5V, making it compatible with common 3.3V and 5V system rails. Its logic input interface is designed for 1.8V, ensuring direct compatibility with low-voltage modern microprocessors and FPGAs without requiring level shifters in most 3.3V systems.

How does the sensor handle noise from artificial lighting?

The IC incorporates a dedicated 50Hz/60Hz light noise reject-function. This internal circuitry filters out the flicker inherent in AC-powered fluorescent and LED lighting, providing stable and accurate illuminance readings unaffected by power line frequency interference.

Can this sensor measure very low or very high light levels?

Yes, its standard high-resolution mode measures from 1 to 65,535 lux. Furthermore, an adjustable measurement function can compensate for external optical windows or filters, extending the effective detection range from a minimum of 0.11 lux up to a maximum of 100,000 lux for extreme lighting conditions.

Is the BH1750FVI-TR suitable for battery-powered devices?

Absolutely. It features a dedicated power-down function that significantly reduces current draw when measurements are not being taken. Combined with its low operating current, this makes the BH1750FVI-TR an excellent choice for portable, battery-operated electronics like smartphones, wearables, and remote sensors.

Package Includes

  • 1 x ROHM Semiconductor BH1750FVI-TR Ambient Light Sensor IC

Additional Information

Weight 0.01 kg
Dimensions 6 × 3 × 2 cm