Silicon Labs Si114X Proximity/Ambient Light Sensor Modules are low-power, reflectance-based, infrared proximity, UV Index and ambient light modules with integrated single IR LED, two additional LED driver outputs, I2C digital interface and programmable-event interrupt output.
These touchless sensor modules includes an analog-to-digital converter, integrated high-sensitivity visible and infrared photodiodes, digital signal processor and three integrated infrared LED drivers with fifteen selectable drive levels.
Features
Integrated infrared proximity detector
Proximity detection adjustable from under 1cm to over 50cm
Three independent LED drivers
15 current settings from 5.6mA to 360mA for each LED driver
25.6μs LED driver pulse width
50cm proximity range with single pulse (<3klx)
15cm proximity range with single pulse (>3klx)
Operates at up to 128klx (direct sunlight)
High reflectance sensitivity <1μW/cm2
High EMI immunity without shielded packaging
Serial communications
Up to 3.4Mbps data rate
Slave mode hardware address decoding
Temperature Range
-40 to +85°C
Integrated UV index sensor
Integrated ambient light sensor
100mlx resolution possible, allowing operation under dark glass
1 to 128klx dynamic range possible across two ADC range settings
Accurate lux measurements with IR correction algorithm
Small-outline 10-lead 4.9x2.85x1.2mm QFN
Single IR LED integrated inside the module
Industry's lowest power consumption
1.71 to 3.6V supply voltage
25.6μs LED "on" time keeps total power consumption duty cycle low without compromising performance or noise immunity
9μA average current (LED pulsed 25.6μs every 800ms at 180mA plus 3μA
< 500nA standby current
Internal and external wake support
Built-in voltage supply monitor and power-on reset controller
Applications
Handsets
Heart rate monitoring
Pulse oximetry
E-book readers
Notebooks/Netbooks
Portable consumer electronics
Audio products
Security panels
Tamper detection circuits
Dispensers
Valve controls
Smoke detectors
Touchless switches
Touchless sliders
Occupancy sensors
Consumer electronics
Industrial automation
Display backlighting control
Fonte - Mouser Electronics, Inc.
