DATASHEET ISL29023 FN6691 Rev 4.00 Integrated Digital Light Sensor with Interrupt May 1, 2014 The ISL29023 is an integrated ambient and infrared light to Features 2 digital converter with I C (SMBus Compatible) Interface. Its Resolution .16-bits ADC advanced self-calibrated photodiode array emulates human eye response with excellent IR rejection. The on-chip ADC is capable Integrated noise reduction . 50/60Hz of rejecting 50Hz and 60Hz flicker caused by artificial light Light sensor close to human eye response sources. The lux range select feature allows users to program the Excellent light sensor IR and UV rejection lux range for optimized counts/lux. 2 Range selection via I C For ambient light sensing, an internal 16-bit ADC has been - Range1 = 0.015 to 1,000 Lux designed based upon the charge-balancing technique. The ADC conversion time is nominally 90ms and is user adjustable - Range2 = 0.06 to 4,000 Lux from 11s to 90ms, depending on oscillator frequency and - Range3 = 0.24 to 16,000 Lux ADC resolution. In normal operation, typical current - Range4 = 0.96 to 64,000 Lux consumption is 70A. In order to further minimize power Shutdown modes Software and Automatic consumption, two power-down modes have been provided. If Supply current (Max) . 85A polling is chosen over continuous measurement of light, the auto-power-down function shuts down the whole chip after Shutdown current (Max) 0.3A each ADC conversion for the measurement. The other 2 Control interface . I C and SMB Compatible 2 power-down mode is controlled by software via the I C 2 I C power supply . 1.7V to 3.63V interface. The power consumption can be reduced to less than 0.3A when powered down. Sensor power supply . 2.25V to 3.63V The ISL29023 supports a software and hardware interrupt that Operating temperature range . -40C to +85C 2 remains asserted until the host clears it through I C interface. Small form factor package .6 Ld 2.0x2.1x0.7 ODFN Function of ADC conversion continues without stopping after interrupt is asserted. Related Literature 2 Designed to operate on supplies from 2.25V to 3.63V with an I C AN1534 VDD Power-Up and Power Supply Considerations supply from 1.7V to 3.63V, the ISL29023 is specified for for Intersil Ambient Light Sensors operation over the -40C to +85C ambient temperature range. AN1591 Evaluation Hardware/Software Manual for ALS and Proximity Sensor Applications AN1757 I2C Fundamentals Mobile devices: smart phone, PDA, GPS AN1782 Ambient Light Sensor (ISL29023) Computing devices: Notebook PC, Webpad Opto-Mechanical Reference Design Consumer devices: LCD-TV, digital picture frame, digital camera Industrial and medical light sensing 1.2 HUMAN EYE 1.0 V BUS VDD 10F 0.1F 0.8 R R R 1 0.6 VDD SDA SDA 6 0.4 ISL29023 IR SENSING SCL 5 SCL MCU 3 SENSOR 0.2 500k GPIO 4 INT 0 VSS 2 AMBIENT LIGHT SENSING -0.2 300 400 500 600 700 800 900 1000 1100 WAVELENGTH (nm) FIGURE 1. ISL29023 TYPICAL APPLICATION DIAGRAM FIGURE 2. NORMALIZED SPECTRAL RESPONSE FOR AMBIENT LIGHT SENSING AND IR SENSING FN6691 Rev 4.00 Page 1 of 14 May 1, 2014 NORMALIZED RESPONSEISL29023 Block Diagram VDD REXT 1 3 I REF fOSC COMMAND REGISTER 5 SCL 2 I C/SMB 6 PHOTODIODE SDA ARRAY DATA LIGHT DATA INTEGRATING CMD Register REGISTER ADC PROCESS INTERRUPT 2 4 GND INT Pin Configuration Pin Descriptions ISL29023 PIN NUMBER PIN NAME DESCRIPTION (6 LD ODFN) TOP VIEW 1 VDD Positive supply connect this pin to a 2.25V to 3.63V supply 1 VDD SDA 6 2GND Ground pin GND PAD SCL 5 2 3R External resistor pin for ADC reference EXT connect this pin to ground through a (nominal) R INT 4 3 EXT 499k resistor. 4INT Interrupt pin low for interrupt alarming. INT *EXPOSED PAD CAN BE CONNECTED TO GND OR ELECTRICALLY ISOLATED pin is open drain. INT remains asserted until the interrupt flag status bit is reset. 2 5SCLI C serial clock. This line can be pulled from 1.7V to above V , 3.63V max. DD 2 6SDAI C serial data. This line can be pulled from 1.7V to above V , 3.63V max. DD PAD Exposed pad connected to ground or electrically isolated Ordering Information PART NUMBER TEMP RANGE PACKAGE PKG. (Notes 1, 2, 3) (C) (RoHS Compliant) DWG. ISL29023IROZ-T7 -40 to +85 6 Ld ODFN L6.2x2.1 ISL29023IROZ-EVALZ Evaluation Board (Pb-free) 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), please see device information page for ISL29023. For more information on MSL please see tech brief TB477. FN6691 Rev 4.00 Page 2 of 14 May 1, 2014