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ISL29028A - Low Power Ambient Light and Proximity Sensor

General Description

PIN NUMBER 0 1 2 3 4 5 6 7 8 PIN NAME T.PAD ADDR0 VDD GND REXT SCL SDA INT IRDR DESCRIPTION Thermal Pad (connect to GND or float) I2C address pin - pull high or low (do not float) Positive supply: 2.25V to 3.63V Ground External resistor (499kΩ; 1%) connects this pin to ground I2C clock line The I2C

Key Features

  • Works Under All Light Sources Including Sunlight.
  • Dual ADCs Measure ALS/Prox Concurrently.
  • Intelligent Interrupt Scheme Simplifies μC Code.
  • 0.5% Typical Nonlinearity Ambient Light Sensing.
  • Simple Output Code Directly Proportional to lux.
  • 50Hz/60Hz Flicker Noise and IR Rejection.
  • Light Sensor Close to Human Eye Response.
  • Selectable 125/2000 Lux Range Proximity Sensing.
  • Proximity Sensor with Broad IR Spectrum - Can U.

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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.

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Low Power Ambient Light and Proximity Sensor with Intelligent Interrupt and Sleep Modes ISL29028A The ISL29028A is an integrated ambient and infrared light-todigital converter with a built-in IR LED driver and I2C Interface (SMBus Compatible). This device uses two independent ADCs for concurrently measuring ambient light and proximity in parallel. The flexible interrupt scheme is designed for minimal microcontroller utilization. For ambient light sensor (ALS) data conversions, an ADC converts photodiode current (with a light sensitivity range up to 2000 Lux) in 100ms per sample. The ADC rejects 50Hz/60Hz flicker noise caused by artificial light sources.