Digital Ambient Light Sensor and Proximity Sensor with Interrupt Function

The ISL29018 is an integrated ambient and infrared light to digital converter with a built-in IR LED driver and I2C Interface (SMBus Compatible). This device provides not only ambient light sensing to allow robust backlight/display brightness control but also infrared sensing to allow proximity estimation featured with interrupt function.

Features

Proximity Sensing

• Ambient IR Cancellation During Proximity Sensing

- Works Under Direct Sunlight

• IR LED Driver with Programmable Source Current

- Adjustable Current Drive from 100mA to 12.5mA

• Programmable LED current Modulation Frequency

• Variable Conversion Resolution

Ambient Light Sensing

• Simple Output Code Directly Proportional to lux

• Adjustable Sensitivity up to 65 Counts per lux

• Selectable Range (via I2C)

- Range 1 = 0.015 lux to 1,000 lux

- Range 2 = 0.06 lux to 4,000 lux

- Range 3 = 0.24 lux to 16,000 lux

- Range 4 = 0.96 lux to 64,000 lux

• Integrated 50/60Hz Noise Rejection

• Works Under Various Light Sources, Including Sunlight

Ideal Spectral Response for Light and Proximity Sensor

• Light Sensor Close to Human Eye Response

- Excellent Light Sensor IR and UV Rejection

• Proximity sensor range from 850nm to 950nm

- Can use either 850nm or 950nm LED solution

Ultra Low Power

• 90μA Max Operating Current

• Software Shutdown and Automatic Shutdown

- 0.5μA Max Shutdown Current

Easy to Use

• I2C (SMBus Compatible) Output

• No Complex Algorithms Needed

• Temperature Compensated

• Small Form Factor

- 8 Ld 2.0mmx2.1mmx0.7mm ODFN Package

Additional Features

• I2C and SMBus Compatible

• 1.7V to 3.63V Supply for I2C Interface

• 2.25V to 3.63V Sensor Power Supply

• Pb-Free (RoHS compliant)

Applications

• Display and Keypad Dimming Adjustment and Proximity Sensing for:

- Mobile Devices: Smart Phone, PDA, GPS

- Computing Devices: Notebook PC, Webpad

- Consumer Devices: LCD-TV, Digital Picture Frame, Digital Camera

• Industrial and Medical Light and Proximity Sensing