ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)

TSL25721 Ambient Light Sensor

Light-to-digital converter with Vdd I²C interface


TSL2572 device family provides ambient light sensing (ALS) that approximates human eye response to light intensity under a variety of lighting conditions and through a variety of attenuation materials. Accurate ALS measurements are the result of patented dual-diode technology and the UV rejection filter incorporated in the package. The operating range  can be extended to 60,000 LUX when the low-gain mode is use. The TSL2572 device is particularly useful for enabling Automatic Brightness Control (ABC) in large LCD Flat Panel TVs and displays by providing optimum viewing in diverse lighting conditions (daytime versus nighttime viewing) while significantly reducing energy consumption to meet the stringient EneryStar requirements.

Key Features

  • Patented dual-diode architecture
  • 8M:1 dynamic range
  • Programmable interrupt function
  • UV-rejection package
  • Area efficient 2mm x 2mm Dual Flat no-lead (FN) package

Key Benefits

  • Enables operation in IR light environments
  • Enables dark room to 60K lux sunlight operation
  • Reduces micro-processor Interrupt  overhead
  • Improves lux accuracy across various light sources
  • Reduces board space requirements while simplifying designs

Product Facts

Supply Voltage [V] 2.4 - 3.6
Interface I²C - Vdd
Programmable Gain, Integration Time, Interrupt
Maximum Lux 10000
Temperature Range [°C] -30 to +70
Packages FN (6-Pin)

Additional Information

  • Display backlight control
  • Keyboard illumination control
  • Solid-state and general lighting control
  • Printer paper detection