DATASHEET ISL29112 FN8836 Rev.1.00 Low Power, <100 Lux Optimized, Analog Output Ambient Light Sensor May 8, 2017 The ISL29112 is a low cost, light-to-voltage silicon optical Features sensor combining a photodiode array, a non-linear current Square root voltage output amplifier, and a micropower op amp on a single monolithic IC. Similar to the human eye, the photodiode array has peak 0.01 lux to 100 lux range sensitivity at 550nm and spans the wavelength range 400nm 1.8V to 3V supply range to 600nm, rejecting UV and IR light. The input luminance range Close to human eye spectral response is from 0.01 lux to 100 lux. Fast response time The integrated non-linear current amplifier boosts and converts the photodiode signal into a square root output Internal temperature compensation format, extending dynamic range while maintaining excellent Good IR rejection sensitivity in dimly lit conditions. As such, the part is ideal for Low supply current measuring incident daylight when mounted behind heavily smoked bezels used around displays or behind mirrors. Operating temperature range -40C to +85C The device consumes minimum power. A dark current 6 Ld ODFN: 2mmx2.1mmx0.7mm compensation circuit minimizes the effect of temperature Pb-free (RoHS compliant) dependent leakage currents in the absence of light, improving the light sensitivity at low lux levels. The output gain has been Applications optimized to require a relatively low value external bias resistor Mobile devices: wearables, smart phone, PDA, GPS that falls within recommended automotive EMI limits. The built-in 1A op amp gives the ISL29112 an output voltage Computing devices: notebook PC, MacBook, tablets driving advantage for heavier loads that can drive an ADC Consumer devices: LCD-TV, digital camera directly. Industrial, home automation and medical light sensing The ISL29112 is housed in an ultra compact 2mmx2.1mm ODFN plastic surface mount package. Operation is rated from Related Literature -40C to +85C. For a full list of related documents, visit our website - ISL29112 product page VDD 1 VOUT - 6 CURRENT LIGHT DATA + AMPLIFIER PROCESS OUTPUT CURRENT LIGHT INTENSITY PHOTODIODE GND ARRAY 2 REXT 4 FIGURE 1. SIMPLIFIED BLOCK DIAGRAM FN8836 Rev.1.00 Page 1 of 9 May 8, 2017ISL29112 Pin Configuration ISL29112 (6 LD ODFN) TOP VIEW VDD 1 6 VOUT GND 2 5 NC PAD NC 3 4 REXT Pin Descriptions PIN NUMBER PIN NAME PIN DESCRIPTION 1 VDD Voltage Supply (1.8V to 3V). 2GND Ground 3, 5 NC No connect 4 REXT Connected to an external resistor to GND, setting the light-to-voltage scaling constant. A R value of 100k is recommended. EXT 6 VOUT Voltage Output. - PAD Thermal Pad. The thermal pad can be connected to GND or electrically isolated. Ordering Information PART NUMBER TAPE AND REEL PACKAGE PKG. (Notes 1, 2, 3) (UNITS) (RoHS Compliant) DWG. ISL29112IROZ-T7 3k 6 Ld ODFN L6.2x2.1 ISL29112IROZ-T7A 250 6 Ld ODFN L6.2x2.1 ISL29112IROZ-EVALZ Evaluation Board NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets molding compounds/die attach materials and NiPdAu plate -e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), see product information page for ISL29112. For more information on MSL please see techbrief TB477. FN8836 Rev.1.00 Page 2 of 9 May 8, 2017