ISL29004 Datasheet, PDF (1/17 Pages) Intersil Corporation – Light-to-Digital Output Sensor with Address Selection, High Sensitivity, Gain Selection, Interrupt Function and I2C Interface

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Data Sheet
December 21, 2006
ISL29004
FN6221.0
Light-to-Digital Output Sensor with
Address Selection, High Sensitivity, Gain
Selection, Interrupt Function and I²C
Interface
The ISL29004 is an integrated light sensor with a 16-bit
integrating type ADC, I²C user programmable Lux range
select for optimized counts/Lux, and I²C multi-function
control and monitoring capabilities. The internal ADC
provides 16-bit resolution while rejecting 50Hz and 60Hz
flicker caused by artificial light sources.
In normal operation, power consumption is typically 300µA.
Futhermore, an available software power-down mode
controlled via the I²C interface reduces power consumption
to less than 1µA. The device also support a hardware
interrupt that remains asserted low until the host clears it
through I²C interface.
The ISL29004 is in an 8 Ld ODFN package and has two I²C
address pins for multiple devices on the same bus. The
ISL29003 is a similar light sensor with a hardwired I²C
address that is available in ODFN6 package.
Designed to operate on supplies from 2.5V to 3.3V, the
ISL29004 are specified for operation over the -40°C to
+85°C ambient temperature range.
Ordering Information
PART NUMBER
(Note)
TAPE &
REEL
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL29004IROZ
-
8 Ld ODFN
MDP0052
ISL29004IROZ-T7
7” 8 Ld ODFN Tape MDP0052
and Reel
ISL29004IROZ-EVALZ Evaluation Board (Pb-free)
NOTE: Intersil Pb-free plus anneal 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
ISL29004
(8 LD ODFN)
TOP VIEW
VDD 1
GND 2
REXT 3
A0 4
THERMAL
PAD
8 SDA
7 SCL
6 INT
5 A1
Features
• Range select via I²C
- Range1 = 1000Lux
- Range2 = 4000Lux
- Range3 = 16,000Lux
- Range4 = 64,000Lux
• Human eye response (540nm peak sensitivity)
• Temperature compensated
• 16-bit resolution
• Adjustable resolution: up to 65 counts per Lux
• User-programmable upper and lower threshold interrupt
• Simple output code, directly proportional to Lux
• 50Hz/60Hz rejection
• 2.5V to 3.3V supply
• 8 Ld ODFN (3mmx3mm)
• I²C address selection
Applications
• Ambient light sensing
• Backlight control
• Temperature control systems
• Contrast control
• Camera light meters
• Lighting controls
Block Diagram
1
PHOTODIODE 1
MUX
INTEGRATING
ADC
PHOTODIODE 2
IREF
FOSC
3
REXT
EXT
TIMING
2¹⁶
COUNTER
2
GND
ISL29004
COMMAND
REGISTER
DATA
REGISTER
I²C
INT
INTERRUPT
8 SDA
7 SCL
4 A0
5 A1
6 INT
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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