ISL29035IROZ-T7

DATASHEET ISL29035 FN8371 Rev 3.00 December 12, 2016 Integrated Digital Light Sensor with Interrupt The ISL29035 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 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. Features For ambient light sensing, an internal 16-bit ADC has been designed based upon the charge-balancing technique. The ADC conversion time is nominally 105ms and is user adjustable from 11µs to 105ms, depending on oscillator frequency and ADC resolution. In normal operation, typical current consumption is 57µA. In order to further minimize power consumption, two power-down modes have been provided. If polling is chosen over continuous measurement of light, the auto power-down function shuts down the whole chip after each ADC conversion for the measurement. The other power-down mode is controlled by software via the I2C interface. The power consumption can be reduced to less than 0.3µA when powered down. • Shutdown modes. . . . . . . . . . . . . . . . . . . .software and automatic The ISL29035 supports a software brownout condition detection. The device powers up with the brownout bit asserted until the host clears it through the I2C interface. The ISL29035 supports a software and hardware interrupt that remains asserted until the host clears it through the I2C interface. 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 ISL29035 is specified for operation across the -40°C to +85°C ambient temperature range. FN8371 Rev 3.00 December 12, 2016 • Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-bit ADC • Wide dynamic range . . . . . . . . . . . . . . . . . . . . . . . . . .1:4,200,000 • Integrated noise reduction . . . . . . . . . . . . . . . . . . . . . 50/60Hz • Close to human eye response with excellent IR/UV rejection • Programmable interrupt threshold with persistence filter • Supply current (typical) . . . . . . . . . . . . . . . . . . . . . . . . . . . 57µA • Shutdown current (maximum) . . . . . . . . . . . . . . . . . . . 0.51µA • I2C (SMB compatible) power supply . . . . . . . . . 1.7V to 3.63V • Sensor power supply . . . . . . . . . . . . . . . . . . . . . 2.25V to 3.63V • Operating temperature range. . . . . . . . . . . . . -40°C to +85°C • Small form factor package . . . . . . . 6 Ld 1.5x1.6x0.75 ODFN Applications • Mobile devices: smart phone, PDA, GPS • Computing devices: notebook PC, MacBook, tablets • Consumer devices: LCD-TV, digital camera • Industrial and medical light sensing Related Literature • AN1591, “Evaluation Hardware/Software Manual for ALS and Proximity Sensor” TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS ALS SENSING INTERRUPT PIN NUMBER OF PINS ISL29034 Yes No 4 Ld ISL29035 Yes Yes 6 Ld PART NUMBER Page 1 of 17 ISL29035 100 VDD VDD_PULLUP 4.7k 4.7k 1.2 1µF 4.7k VDD SDA MCU 6 SDA SCL 5 SCL GPIO 4 INT ISL29035 NC GND 2 3 NORMALIZED RESPONSE 1 1.0 HUMAN EYE 0.8 AMBIENT LIGHT SENSOR 0.6 0.4 0.2 0 300 400 500 600 700 800 900 1000 1100 WAVELENGTH (nm) FIGURE 1. ISL29035 TYPICAL APPLICATION DIAGRAM FN8371 Rev 3.00 December 12, 2016 FIGURE 2. NORMALIZED SPECTRAL RESPONSE FOR AMBIENT LIGHT SENSING Page 2 of 17 ISL29035 Block Diagram VDD 1 IREF  COMMAND REGISTER fOSC R 500k PHOTODIODE ARRAY LIGHT DATA PROCESS CMD I2C/SMB Register INTEGRATING ADC 5 SCL 6 SDA DATA Register INTERRUPT 2 4 GND INT FIGURE 3. BLOCK DIAGRAM Pin Configuration Pin Descriptions ISL29035 (6 LD ODFN) TOP VIEW VDD 1 6 SDA GND 2 5 SCL NC 3 4 PIN NUMBER PIN NAME 1 VDD Positive supply 2 GND Ground pin 3 NC No connect 4 INT Interrupt pin; LOW for interrupt alarming. INT pin is an open-drain. INT remains asserted until the interrupt status bit is reset. 5 SCL I2C serial clock 6 SDA I2C serial data INT DESCRIPTION Ordering Information PART NUMBER (Notes 1, 2, 3) TEMP RANGE (°C) TAPE AND REEL (UNITS) ISL29035IROZ-T7 -40 to +85 3k units 6 Ld ODFN L6.1.5x1.6 ISL29035IROZ-T7A -40 to +85 250 units 6 Ld ODFN L6.1.5x1.6 ISL29035EVAL1Z PACKAGE (RoHS COMPLIANT) PKG. DWG. # 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-Ag 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 product information page for ISL29035. For more information on MSL, please see tech brief TB477. FN8371 Rev 3.00 December 12, 2016 Page 3 of 17 ISL29035 Absolute Maximum Ratings Thermal Information VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +4.0V I2C Bus (SCL, SDA) and INT Pin Voltage. . . . . . . . . . . . . . . . . . -0.2V to 4.0V I2C Bus (SCL, SDA) and INT Pin Current. . . . . . . . . . . . . . . . . . . . . . .