ams OSRAM TMD27723 Digital Ambient Light Sensor

ams OSRAM TMD27723 Digital Ambient Light Sensor supports a programmable IR LED in an optical 1.8V module with I²C. TMD27723 features ambient light sensing (ALS) enhancements such as 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.

Features

  • Integrated ALS, proximity sensor, and IR LED
  • Module reduces board space and design effort
  • ALS based on patented dual-diodes
  • Enables operation in IR light environments
  • 1M:1 dynamic range
  • Allows accurate sensing behind spectrally distorting materials (e.g. dark glass)
  • Proximity detection calibrated and trimmed to provide consistent reading
  • Pre-calibration eliminates need for customer to end-product calibrate
  • Programmable LED drive current
  • Allows multiple power-level selections without external passives

Specifications

  • 2.6V to 3.6V supply voltage
  • I²C Bus: 1.8
  • Programmable: gain, integration time, interrupt
  • Integrated capabilities: ALS, Prox, LED Drvr. IR LED
  • <15cm recommended operating distances
  • -40°C to +85°C temperature range
  • Surface mount module, pin count 8 packages

Circuit Diagram

Application Circuit Diagram - ams OSRAM TMD27723 Digital Ambient Light Sensor
Published: 2014-07-22 | Updated: 2022-03-11