A Low Power, High Sensitivity, Light-to Digital Sensor With I2C Interface

The ISL29020 is a low power, high sensitivity, integrated light sensor with I2C (SMBus Compatible) interface. Its state-of-the-art photodiode array provides close-to human eye response and good IR rejection. This ADC is capable of rejecting 50Hz and 60Hz flicker caused by artificial light sources. The lux range select feature allows the user to program the lux range for optimized counts/lux.

Features

• Low Power

- 65µA Max Operating Current

- 0.5µA Max Shutdown Current

- Software Shutdown and Automatic Shutdown

• Ideal Spectral Response

- Close to Human Eye Response

- Excellent IR and UV Rejection

• Easy to Use

- Simple Output Code Directly Proportional to lux

- I2C (SMBus Compatible) Output

- No Complex Algorithms Needed

- Variable Conversion Resolution up to 16-bits

- Adjustable Sensitivity up to 65 Counts per lux

- Works Under Various Light Sources, Including Sunlight

- 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

- Temperature Compensated

- Integrated 50/60Hz Noise Rejection

• Small Form Factor

- 2.0mmx2.1mmx0.7mm 6 Ld ODFN Package

• Additional Features

- I2C and SMBus Compatible

- 1.7V to 3.6V Supply for I2C Interface

- 2.25V to 3.3V Supply

- Address Selection Pin

• Pb-Free (RoHS compliant)

Applications

• Display and keypad dimming 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