The Silicon Labs Si1145/46/47 combines an active optical reflectance proximity detector, an ambient light sensor, UV index sensor and an infrared LED into a single 10-Pin QFN package. Their dual port operation enables reliable proximity detection for moving as well as stationary objects.
The Si1145 has 1 LED driver with an Integrated IR LED - RS The Si1146 has 2 LED drivers with and integrated IR LED - RS The Si1147 has 3 LED drivers with and integrated IR LED - RS
With the Si1147, locate three infrared LEDs in an L-shaped configuration in your application to enable triangulation of an object and in turn, via host software, creating a gesture based user interface.
These modules have photodiodes which can be used to measure both visible and infrared light. Detect levels as low as 6 lux.
- Adjustable proximity detection from 1 cm to over 50 cm - Up to 3 independent LED drivers - 15 current settings from 5.6 mA to 360 mA per driver - 25.6 μs LED driver pulse width - High EMI immunity without shielded packaging - Low power consumption
Sensor Interfaces, Silicon Laboratories
Attribute
Value
Sensor Type
Proximity Sensor
Sensing Distance
1 to 50cm
Switching Mode
Digital
Output Type
Open Drain
Mounting Type
Surface Mount
Package Type
QFN
Pin Count
10
Dimensions
4.9 x 2.85 x 1.2mm
Height
1.2mm
Length
4.9mm
Width
2.85mm
Minimum Operating Temperature
-40 °C
Maximum Operating Supply Voltage
3.6 V
Maximum Operating Temperature
+85 °C
Minimum Operating Supply Voltage
1.71 V
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