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

TMD27723 Ambient Light Sensor

Digital ambient light sensor, proximity sensor and IR LED in an optical module 1.8v I2C


The TMD2772 family of devices provides digital ambient light sensing (ALS), a complete proximity detection system, and digital interface logic in a single 8-pin surface mount module. The devices are register-set and pin-compatible with the TMD2771 family of devices and include new and improved ALS and proximity detection features. The ALS enhancements include a reduced-gain mode that extends the operating range in sunlight.  Proximity detection includes improved signal-to-noise performance and more accurate factory calibration. A proximity offset register allows compensation for optical system crosstalk between the IR LED and the sensor.  To prevent false proximity data measurement readings, a proximity saturation indicator bit signals that the internal analog circuitry has reached saturation.

Key Features

  • Integrated ALS, proximity sensor & IR LED
  • ALS based on patented dual-diodes
  • 1M:1 dynamic range
  • Proximity detection calibrated and trimmed to  provide consistent reading
  • Programmable LED drive current

Key Benefits

  • Module reduces board space and design effort
  • Enables operation in IR light environments
  • Allows accurate sensing behind spectrally distorting materials (e.g. dark glass)
  • Pre-calibration eliminates need for customer to end-product calibrate
  • Allows multiple power-level selection without external passives

Product Facts

Supply Voltage [V] 2.6 - 3.6
I²C Bus 1.8
Programmable Gain, Integration Time, Interrupt
Integrated Capabilities ALS, Prox, LED Drvr. IR LED
Recommended Operating Distances <15 cm
Temperature Range [°C] -40 to 85
Packages Surface Mount Module, Pin Count 8

Additional Information