ISL29002IROZ-EVALZ Intersil, ISL29002IROZ-EVALZ Datasheet

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ISL29002IROZ-EVALZ

Manufacturer Part Number
ISL29002IROZ-EVALZ
Description
EVALUATION BOARD FOR ISL29002
Manufacturer
Intersil
Datasheet

Specifications of ISL29002IROZ-EVALZ

Sensor Type
Light, Digital Output
Sensing Range
100000Lux
Interface
I²C
Sensitivity
550nm
Voltage - Supply
2.25 V ~ 3.63 V
Embedded
No
Utilized Ic / Part
ISL29002
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Light-to-Digital I
The ISL29002 is an integrated light sensor with a built-in
integrating type ADC and a standard I
device transforms illuminance, ambient light level in lux, into
a digital output signal accessible through I
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 I
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.
Block Diagram
PHOTODIODE 1
PHOTODIODE2
R
2
C interface and disables all but the I
EXT
3
MUX
FOSC
IREF
VDD
1
INTEGRATING
2
C Sensor
ADC
GND
2
®
COUNTER
1
2
16
Data Sheet
2
C interface. The
2
A2
2
COMMAND
REGISTER
C. The sensor
REGISTER
6
C interface. The
DATA
I
A1
2
5
C
A0
4
1-888-INTERSIL or 1-888-468-3774
7
8
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
SCL
SDA
Features
• I
• 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
Ordering Information
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
ISL29002IROZ
ISL29002IROZ-T7
PART NUMBER
2
December 1, 2006
C interface fast mode at 400kHz
(Note)
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
R
GND
VDD
EXT
A0
Copyright © Intersil Americas Inc. 2006. All Rights Reserved.
-40 to +85
-40 to +85
RANGE
1
2
3
4
TEMP.
(°C)
(8 LD ODFN)
TOP VIEW
ISL29002
THERMAL
PAD
TAPE &
REEL
7”
-
8 Ld 3x3 ODFN MDP0052
8 Ld 3x3 ODFN MDP0052
8
7
6
5
PACKAGE
SDA
SCL
A2
A1
ISL29002
(Pb-Free)
FN7465.2
DWG. #
PKG.

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ISL29002IROZ-EVALZ Summary of contents

Page 1

... Backlight sensing • Automatic backlight adjustment • Backlight linearity adjustments Ordering Information PART NUMBER (Note) ISL29002IROZ COMMAND ISL29002IROZ-T7 REGISTER DATA NOTE: Intersil Pb-free ODFN products employ special Pb-free material REGISTER sets; molding compounds/die attach materials and 100% matte tin plate 7 SCL ...

Page 2

Absolute Maximum Ratings (T A Maximum Supply Voltage between V and GND . . . . . . . . . . 3. Address Pin Voltage (A2, A1, A0 ...

Page 3

Pin Descriptions PIN NUMBER PIN NAME 1 VDD Positive supply. Connect to a clean 2.25V to 3.3V supply 2 GND Ground. The thermal pad is connected to the GND pin 3 R External resistor pin is for the ADC reference ...

Page 4

Typical Performance Curves 315 COMMAND = 00H 305 25000 lux 295 285 275 265 -60 -20 20 TEMPERATURE ( FIGURE 5. SUPPLY CURRENT vs TEMPERATURE 1.080 COMMAND = 00H 1.048 25000 lux ...

Page 5

Principles of Operation Photodiodes and ADC The ISL29002 contains two photodiodes. One of the photodiodes is sensitive to visible and infrared light (Diode 1). Another photodiode (Diode 2) is covered with metal and can be used to cancel the effects ...

Page 6

Command Register The command register is used to define the ADC's operations. Table 1 shows the primary commands used to control the ADC. Note that there are two classes of operating commands: three for internal timing, and three for external ...

Page 7

Data Registers The ISL29002 contains four 8-bit data registers. These registers cannot be specifically addressed conventional 2 with other I C peripherals; instead, performing a read operation on the device always returns all available registers in ascending order. ...

Page 8

In order to avoid erroneous lux readings the integration must be short enough not to allow an overflow in the counter ...

Page 9

Typical Circuit A typical application circuit is shown in Figure 12. 2.5- 3.3V + 4.7µF 0.1µF Suggested PCB Footprint See Figure 13. Footprint pads should be a nominal 1-to-1 correspondence with package pads. The large, exposed central die-mounting paddle in ...

Page 10

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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