Proximity/Ambient Light Sensor IC with I2C Interface

Proximity/Ambient Light Sensor IC with I2C Interface The Si1153-AA00/AA09/AA9x is an ambient light sensor, proximity, and gesture detector with I2C digital interface and programmable-event interrupt output.
This touchless sensor IC includes dual 23-bit analog-to-digital converters, an integrated high-sensitivity array of visible and infrared photodiodes, a digital signal processor, and three integrated LED drivers with programmable drive levels. The Si1153 offers excellent performance under a wide dynamic range and a variety of light sources, including direct sunlight. The Si1153 can also work under dark glass covers. The photodiode response and associated digital conversion circuitry provide excellent immunity to artificial light flicker noise and natural light flutter noise. 

KEY FEATURES
• Proximity detector
   • From under 1 cm, to 50 cm without
      additional lensing.
   • From under 1 cm, to 200 cm with
      additional lensing (e.g., 5 mm
      hemispherical lens as in our EVB).
   • Up to three independent LED drivers.
   • 30 current settings from 5.6 mA to 360
      mA for each LED driver.
   • Operates in direct sunlight with optional
      on-die 940 nm passband filter.
   • On die 940 bandpass filter that rejects
      unwanted visible light and IR from
      daylight and other sources (Si1153-
      AA09/AA9X).
• Ambient light sensor
   • <100 mlx resolution possible, allowing
      operation under dark glass.
   • Up to 128 klx dynamic range possible
      across two ADC range settings.
• Industry’s lowest power consumption
   • 1.62 to 3.6 V supply voltage.
   • 9 μA average current (LED pulsed 25.6
      μs every 800 ms at 180 mA plus 3 μA
      Si1153 supply).
   • <500 nA standby current.
   • 25.6 μs LED “on” time keeps total power
      consumption duty cycle low without
      compromising performance or noise
      community.
   • Internal and external wake support.
   • Built-in voltage supply monitor and
      power-on reset controller.

APPLICATIONS
• Wearables
• Handsets
• Display backlighting control
• Consumer electronics