UG163 Datasheet, PDF (11/25 Pages) Silicon Laboratories – Si1133/Si1153 Optical Sensor Evaluation Board Users Guide

UG163: Si1133/Si1153 Optical Sensor Evaluation Board User's Guide
The Five Sensors on the EVB
Figure 3.4. Lens Holder Used for Long-Range Sensor
3.3 Sunlight-Immune Proximity Module
A Si1153-AA09, 2.85 X 4.9 mm proximity sensing module with an on-die 940 nm bandpass filter for sunlight immunity and an integrated
940 nm LED is mounted on the board.
The 940 nm filter on the die and matching LED are selected to coincide with a dip in solar energy that occurs around 940 nm. One gets
the advantage of rejecting visible and IR light by a couple of orders of magnitude and operating in a safe area with minimal sun energy.
3.4 Proximity/ALS
The Si1153-AA00, 2X2 mm light sensor chip is mounted with a nearby 850 nm LED to demonstrate simple ALS and proximity measure-
ments.
3.5 Gesture/ALS
The Si1153-AA00 2x2 mm light sensor chip is mounted on the board, while the PCB uses three carefully spaced 850 nm LEDs for to
demonstrate gesture operation.
silabs.com | Smart. Connected. Energy-friendly.
Rev. 0.1 | 10