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SI1142 - PROXIMITY/AMBIENT LIGHT SENSOR IC

Download the SI1142 datasheet PDF. This datasheet also covers the SI1143 variant, as both devices belong to the same proximity/ambient light sensor ic family and are provided as variant models within a single manufacturer datasheet.

General Description

The Si1141/42/43 is a low-power, reflectance-based, infrared proximity and ambient light sensor with I2C digital interface and programmable-event interrupt output.

Key Features

  • Pin Assignments.
  • QuickSense™ integrated infrared proximity detector.
  • Proximity detection adjustable from under 1 cm to over 1 m.
  • Three independent LED drivers.
  • 15 current settings from 5.6 mA to 360 mA for each LED driver.
  • 25.6 µs LED driver pulse width.
  • 500 mm proximity range with single pulse (2.5 klx).
  • Operates at up to 128 klx (direct sunlight).
  • Minimum reflectance sensitivity < 1 µW/cm2.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (SI1143-SiliconLaboratories.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Silicon Laboratories

Part Number Description
Si1142-M01 PROXIMITY/AMBIENT LIGHT SENSOR MODULE
SI1141 PROXIMITY/AMBIENT LIGHT SENSOR IC
Si1141-M01 PROXIMITY/AMBIENT LIGHT SENSOR MODULE
SI1143 PROXIMITY/AMBIENT LIGHT SENSOR IC
Si1143-M01 PROXIMITY/AMBIENT LIGHT SENSOR MODULE

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Si 11 4 1 / 4 2 /43 P R O X I M I T Y /A M BI E N T L I G H T S E N S O R I C WI T H I 2 C I N T E R F A C E Features Pin Assignments  QuickSense™ integrated infrared proximity detector Proximity detection adjustable from under 1 cm to over 1 m Three independent LED drivers 15 current settings from 5.6 mA to 360 mA for each LED driver 25.6 µs LED driver pulse width  500 mm proximity range with single pulse (<2.5 klx) 150 mm proximity range with single pulse (>2.