ISL29012 Datasheet PDF

ISL29012 View Datasheet(PDF) - Intersil

Part Name

Description

Manufacturer

ISL29012

Light-to-Digital Output Sensor with High Sensitivity, Gain Selection, Interrupt Function and I2C Bus™

Intersil

ISL29012 Datasheet PDF : 15 Pages

1 2 3 4 5 6 7 8 9 10 Next Last

Data Sheet

December 10, 2008

ISL29012

FN6476.1

Light-to-Digital Output Sensor with High

Sensitivity, Gain Selection, Interrupt

Function and I2C Bus™

The ISL29012 is an integrated light sensor with I2C (SMBus

Compatible) interface. It has an internal signed 15-bit

integrating type ADC designed based on the

charge-balancing A/D conversion technique. 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.

In normal operation, power consumption is typically 250µA.

Furthermore, a power-down mode can be controlled by

software via the I2C interface, reducing power consumption

to less than 1µA.

The ISL29012 supports a hardware interrupt that remains

asserted low until the host clears it through I2C interface.

Designed to operate on supplies from 2.5V to 3.3V, the

ISL29012 is specified for operation over the -40°C to +85°C

ambient temperature range.

Ordering Information

PART NUMBER

(Note)

TEMP.

PACKAGE

RANGE (°C) (Pb-Free)

PKG.

DWG. #

ISL29012IROZ-T7*

-40 to +85 6 Ld ODFN L6.2x2.1

ISL29012IROZ-EVALZ Evaluation Board

*Please refer to TB347 for details on reel specifications.

NOTE: 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.

Block Diagram

VDD

LIGHT DATA

PROCESS

PHOTODIODE

ARRAY

IREF

FOSC

REXT

INTEGRATING

ADC

EXT

TIMING

216

COUNTER

GND

ISL29012

COMMAND

DATA

I2C

5 SCL

6 SDA

INT

INTERRUPT 4 INT

Features

• Range Select Via I2C

- Range 1 = 0.5 lux to 2,000 lux

- Range 2 = 0.5 lux to 8,000 lux

- Range 3 = 0.5 lux to 32,000 lux

- Range 4 = 0.5 lux to 128,000 lux

• Human Eye Response (540nm Peak Sensitivity)

• Temperature Compensated

• Signed 15-bit Resolution

• Adjustable Resolution: Up to 20 Counts per lux

• User-programmable Upper and Lower Threshold Interrupt

• Simple Output Code, Directly Proportional to lux

• IR + UV Rejection

• 50Hz/60Hz Rejection

• 2.5V to 3.3V Supply

• 6 Ld ODFN (2.1mmx2mm)

• Pb-Free (RoHS compliant)

• Operating Temperature Range: -40°C to +85°C

• I2C and SMBus Compatible

Applications

• Display and Keypad Backlight Dimming

- Mobile Devices: Smart phone, PDA, and GPS

- Computing Devices: Notebook PC, UMPC Web Pod

- Consumer Devices: LCD-TV, Digital Picture Frame and

Digital Cameras

• Industrial and Medical Light Sensing

Pinout

ISL29012

(6 LD ODFN)

TOP VIEW

VDD 1

GND 2

REXT 3

6 SDA

5 SCL

4 INT

*EXPOSED PAD CAN BE CONNECTED TO GND OR

ELECTRICALLY ISOLATED

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.

I2C Bus is a registered trademark owned by NXP Semiconductors Netherlands, B.V

All other trademarks mentioned are the property of their respective owners.

Share Link: