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ISL29012
Data Sheet
November 17, 2011
FN6476.2
Light-to-Digital Output Sensor with High
Sensitivity, Gain Selection, Interrupt
Function and I 2 C Bus?
The ISL29012 is an integrated light sensor with I 2 C (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 I 2 C interface, reducing power consumption
to less than 1μA.
The ISL29012 supports a hardware interrupt that remains
asserted low until the host clears it through I 2 C 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.
Features
? Range Select Via I 2 C
- 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)
Ordering Information
PART NUMBER TEMP.
(Notes 1, 2, 3) RANGE (°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
? Pb-Free (RoHS compliant)
? Operating Temperature Range: -40°C to +85°C
? I 2 C and SMBus Compatible
ISL29012IROZ-T7 (Note 4)
ISL29012IROZ-EVALZ
-40 to +85 6 Ld ODFN
Evaluation Board
L6.2x2.1
Applications
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 100% matte tin plate - e3 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 ISL29012 . For more information on MSL
please see tech brief TB477 .
4. Not recommended for new designs.
? 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
Block Diagram
VDD
1
Pinout
VDD 1
GND 2
REXT 3
ISL29012
(6 LD ODFN)
TOP VIEW
6 SDA
5 SCL
4 INT
LIGHT DATA
PROCESS
PHOTODIODE
ARRAY
IREF
FOSC
3
INTEGRATING
ADC
EXT
TIMING
2 16
COUNTER
2
COMMAND
REGISTER
DATA
REGISTER
I 2 C
INT
INTERRUPT
5 SCL
6 SDA
4 INT
*EXPOSED PAD CAN BE CONNECTED TO GND OR
ELECTRICALLY ISOLATED
REXT
GND
ISL29012
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2008, 2011. All Rights Reserved.
I 2 C Bus is a registered trademark owned by NXP Semiconductors Netherlands, B.V
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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相关PDF资料
ISL29013IROZ-EVALZ EVALUATION BOARD FOR ISL29013
ISL29015IROZ-EVALZ EVALUATION BOARD FOR ISL29015
ISL29018IROZ-EVALZ EVALUATION BOARD FOR ISL29018
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ISL29021IROZ-EVALZ EVAL BOARD FOR ISL29021IROZ
ISL29023IROZ-EVALZ EVALUATION BOARD ISL29023IROZ
ISL29028AIROZ-EVALZ BOARD EVALUATION FOR ISL29028
ISL29028IROZ-EVALZ EVAL BOARD FOR ISL29028IROZ
相关代理商/技术参数
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