ISL29002

® ISL29002 Data Sheet December 1, 2006 FN7465.2 Light-to-Digital I2C Sensor The ISL29002 is an integrated light sensor with a built-in integrating type ADC and a standard I2C interface. The device transforms illuminance, ambient light level in lux, into a digital output signal accessible through I2C. The sensor precisely converts illuminance from 1lux to 100,000lux. The ADC features up to 15-bit effective resolution. The sensor includes another photodiode covered with metal to reduce the effects of dark output reading that may be significant in low lux levels. The ISL29002 can control display panel backlighting depending on ambient light conditions, adding artificial intelligence by approximating the response of a human eye. The ISL29002 can also manage portable peripheral illumination based upon lighting conditions extending battery life. In normal operation, the ISL29002 consumes less than 300µA of supply current. A software power down mode is controlled via the I2C interface and disables all but the I2C interface. The supply current is then reduced to less than 88µA. Designed to operate on supplies from 2.5V to 3.3V, the ISL29002 is specified for operation over the -40°C to +85°C ambient temperature range. It is packaged in a clear, Pb-free 8 Ld ODFN package. Features • I2C interface fast mode at 400kHz • 88µA disabled current • Adjustable max lux range: 10,000lux to 100,000lux • Up to 15-bit effective resolution • Adjustable resolution: 0.15 to 1.65 counts per lux • Simple output code proportional to lux • Flicker/noise rejection • Variable integration time; 50ms to 550ms • 2.5V to 3.3V supply • 8 Ld ODFN (3mmx3mm) • Temperature compensation • Pb-free available (RoHS compliant) Applications • Backlight sensing • Automatic backlight adjustment • Backlight linearity adjustments Block Diagram VDD 1 PHOTODIODE 1 COMMAND REGISTER MUX INTEGRATING ADC DATA REGISTER I2C 216 COUNTER 7 SCL 8 SDA Ordering Information PART NUMBER (Note) ISL29002IROZ ISL29002IROZ-T7 TEMP. RANGE (°C) -40 to +85 -40 to +85 TAPE & REEL 7” PACKAGE (Pb-Free) PKG. DWG. # 8 Ld 3x3 ODFN MDP0052 8 Ld 3x3 ODFN MDP0052 PHOTODIODE2 IREF FOSC NOTE: Intersil Pb-free ODFN products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are 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. Pinout 3 REXT 2 GND 654 A2 A1 A0 ISL29002 (8 LD ODFN) TOP VIEW VDD 1 GND 2 REXT 3 A0 4 THERMAL PAD 8 SDA 7 SCL 6 A2 5 A1 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2006. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. ISL29002 Absolute Maximum Ratings (TA = +25°C) Maximum Supply Voltage between VDD and GND . . . . . . . . . . 3.6V I2C Address Pin Voltage (A2, A1, A0) . . . . . . . . . . . . . -0.2V to 3.6V I2C Bus Pin Voltage (SCL, SDA) . . . . . . . . . . . . . . . . . -0.2V to 5.5V I2C Bus Pin Current (SCL, SDA) . . . . . . . . . . . . . . . . . . . . . .