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The ISL29033 is an integrated ambient and infrared light-to-digital converter with I²C (SMBus Compatible) interface. Its advanced, self-calibrated photodiode array emulates human eye response with excellent IR rejection. The on-chip 16-bit ADC is capable of rejecting 50Hz and 60Hz flicker caused by artificial light sources. The lux range select feature allows users to program the lux range for optimized counts/lux. Power consumption can be reduced to less than 0.3μA when powered down.

The ISL29033 supports a software and hardware interrupt that remains asserted until the host clears it through the I²C interface. The function of ADC conversion continues without stopping after interrupt is asserted.

Designed to operate on supplies from 2.25V to 3.63V with an I²C supply from 1.7V to 3.63V, the ISL29033 is specified for operation across the -40°C to +85°C ambient temperature range.

Key Features

• Ambient light sensing
• Simple output code directly proportional to lux
• Variable conversion resolution up to 16 bits
• Adjustable sensitivity up to 520 counts per lux
• Measurement range: 0.0019 to 8,000lux with four selectable ranges
• Program interrupt feature
• Light sensor close to human eye response
  • Excellent light sensor IR and UV rejection
• 75μA maximum operating current
  • 0.3μA maximum shutdown current
• 6 Ld 2.0mmx2.1mmx0.7mm ODFN package

Applications

• Display and keypad dimming adjustment 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 sensing