Infrared Proximity and Ambient Light Sensor

MFG Part #:


Part #:
In Stock
RoHS Status:
Unit Price:$2.86
Minumum Qty: 1
Ask a Question
Call Me
Email This Page

Product Information

Back to top
The Silicon Labs Si1120 is a high-sensitivity active infrared proximity and ambient light sensor IC, enabling innovative touchless human interface applications with ultra-low power advantages.

The high-sensitivity infrared photodiode provides a single-pulse infrared proximity measurement, offering customers an opportunity to implement a proximity and ambient light sensor with ultra-low power levels. Consisting of an infrared LED driver, an infrared photodiode, an ambient light sensor and control logic, the device is packaged in a 3 mm x 3 mm clear DFN.

• Handsets
• Touchless switches
• Occupancy sensors
• Consumer electronics
• Notebooks/PCs
• Industrial automation
• Display backlighting control
• Photo-interrupter

Symmetry Electronics is an authorized Silicon Labs distributor.


Back to top
Typically 50 cm meter proximity range with single pulse
Seven precision optical measurement modes:
? 3 proximity ranges
? 3 dc ambient ranges
? 1 calibration mode
Low-noise ambient cancelling circuit allows maximum sensitivity with 812 bit resolution
ALS works in direct sunlight (100 klux)
Minimum reflectance sensitivity <1 W/cm2
High EMI immunity without shielded packaging
Power supply: 2.23.7 V
Operating temperature range: 40 to +85 C
Typical 10 A current consumption
Programmable 400/50 mA LED constant current driver output
Allows independent LED supply voltage
Small outline 3 x 3 mm (ODFN)


Back to top

Previously Viewed Products