Abstract
This application note describes technical details and provides some application guidelines for the combined ambient light and proximity sensor SFH 7770 E6. Compared to its predecessors (SFH 7770 E4 and E5), the SFH 7770 E6 features a mores sensitive proximity sensor (up to five times improved sensitivity) and improved ambient light sensor (sensitive down to 0.03 lx).
The document starts with a general introduction to the device, followed by a brief overview on the features (Sec. 2) and operating modes (Sec. 3) of the sensor. The integration and operation of the sensor in an I²C bus environment is described in Sec. 4, whereas Sec. 5 covers the interrupt capabilities of the SFH 7770 E6.

Introduction
The SFH 7770 E6 is a compact device which is designed for simultaneous detection of ambient light and proximity of reflecting objects. Applications are mobile phones, PDAs, notebooks, cameras and other consumer products.

The device includes the following features:
• Proximity Sensor (PS)
   - Detection-range up to 200 mm
   - Gesture recognition possible
   - Outputs to drive up to three IR
      emitters
   - Optimized for 850 nm emitters
   - Immune to ambient light
• Ambient Light Sensor (ALS)
   - 0.03lx - 65000lx- High linearity
   - Spectral sensitivity well matched to
      the human eye
• I2C interface
   - 100 kHz / 400 kHz and 3.4 MHz
      mode
   - 3 programmable measurement
      modes (STAND-BY, TRIGGERED,
      FREE-RUNNING)
• Current consumption < 5 μA in
   STAND-BY mode
• Small package size, 2.8 x 2.8 x 0.9
   mm³