The BMT MAX44009 Ambient Light Sensor (GY-49) is a highly efficient, ultra-low-power digital light sensor with an I2C interface. It is ideal for a wide range of applications, including smartphones, tablets, digital lighting systems, industrial sensors, and other portable devices. With its 22-bit ultra-wide dynamic range, the MAX44009 can accurately detect light levels from 0.045 lux up to 188,000 lux, making it suitable for both dimly lit environments and bright sunlight.
The sensor features an on-chip photodiode optimized to mimic the human eye's perception of light, with IR and UV blocking for accurate lux measurement. Its adaptive gain automatically selects the optimal lux range, while consuming only 0.65 A in full operation, making it one of the most energy-efficient ambient light sensors available.
Features:
Ultra-low power consumption: 0.65 A operating current
Wide detection range: 0.045 - 188,000 lux (22-bit resolution)
Optimized spectral response for human eye perception
IR and UV blocking for precise measurements
Adaptive gain control for accurate lux readings
I2C digital interface for easy integration
Operating voltage: 1.7 - 3.6 VDC
Supports interrupt output for event-driven applications
Compact GY-49 module format for easy mounting
Pin Configuration:
VIN: Supply voltage (3.3 VDC)
GND: Ground
SCL: I2C Clock
SDA: I2C Data
INT: Active-low interrupt output (with external 10k pull-up)
A0: I2C address select (High = 1001 011, Low = 1001 010)
Specifications:
Model: GY-49
Sensor IC: Maxim MAX44009
Detection Range: 0.045 - 188,000 lux
Operating Voltage: 1.7 - 3.6 VDC
Operating Current: 0.65 A
Communication Interface: I2C
Operating Temperature: -40 C to +85 C
Applications:
Smartphones and cellular devices
Tablets, notebook computers
Digital lighting and display systems
Security and industrial monitoring
TVs, projectors, and smart displays
The BMT MAX44009 I2C Ambient Light Sensor is perfect for developers and engineers seeking a precise, low-power light sensing solution for modern electronic devices.
What's in the box
1 x BMT MAX44009 I2C Ambient Light Sensor GY-49 0.045-188000 Lux
