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ISL29020IROZ-EVALZ 数据表(PDF) 1 Page - Intersil Corporation

部件名 ISL29020IROZ-EVALZ
功能描述  A Low Power, High Sensitivity, Light-to Digital Sensor With I2C Interface
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制造商  INTERSIL [Intersil Corporation]
网页  http://www.intersil.com/cda/home
标志 INTERSIL - Intersil Corporation

ISL29020IROZ-EVALZ 数据表(HTML) 1 Page - Intersil Corporation

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1
FN6505.1
ISL29020
A Low Power, High Sensitivity, Light-to
Digital Sensor With I2C Interface
The ISL29020 is a low power, high sensitivity, integrated light
sensor with I2C (SMBus Compatible) interface. Its
state-of-the-art photodiode array provides close-to human
eye response and good IR rejection. 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, typical power consumption 55µA. In
order to further minimize power consumption, two
power-down modes have been provided. If polling is chosen
over continuous measurement of light, the auto-power-down
function shuts down the whole chip after each ADC
conversion for the measurement. The other power-down
mode is controlled by software via the I2C interface. The
power consumption can be reduced to less than 1µA when
powered down.
Designed to operate on supplies from 2.25V to 3.3V with I2C
supply from 1.7V to 3.6V, the ISL29020 is specified for
operation over the -40°C to +85°C ambient temperature range.
Block Diagram
Features
•Low Power
- 65µA Max Operating Current
- 0.5µA Max Shutdown Current
- Software Shutdown and Automatic Shutdown
• Ideal Spectral Response
- Close to Human Eye Response
- Excellent IR and UV Rejection
• Easy to Use
- Simple Output Code Directly Proportional to lux
-I2C (SMBus Compatible) Output
- No Complex Algorithms Needed
- Variable Conversion Resolution up to 16-bits
- Adjustable Sensitivity up to 65 Counts per lux
- Works Under Various Light Sources, Including Sunlight
- Selectable Range (via I2C)
- Range 1 = 0.015 lux to 1,000 lux
- Range 2 = 0.06 lux to 4,000 lux
- Range 3 = 0.24 lux to 16,000 lux
- Range 4 = 0.96 lux to 64,000 lux
- Temperature Compensated
- Integrated 50/60Hz Noise Rejection
• Small Form Factor
- 2.0mmx2.1mmx0.7mm 6 Ld ODFN Package
• Additional Features
-I2C and SMBus Compatible
- 1.7V to 3.6V Supply for I2C Interface
- 2.25V to 3.3V Supply
- Address Selection Pin
• Pb-Free (RoHS compliant)
Applications
• Display and keypad dimming for:
- Mobile devices: smart phone, PDA, GPS
- Computing devices: notebook PC, webpad
- Consumer devices: LCD-TV, digital picture frame, digital
camera
• Industrial and medical light sensing
Pinout
ISL29020
(6 LD ODFN)
TOP VIEW
Ordering Information
PART NUMBER
(Note)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL29020IROZ-T7*
6 Ld ODFN
L6.2x2.1
ISL29020IROZ-EVALZ
Evaluation Board (Pb-free)
*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.
VDD
REXT
GND
SDA
SCL
COMMAND
REGISTER
INTEGRATING
ADC
DATA
REGISTER
PHOTODIODE
LIGHT
3
2
5
6
1
fOSC
IREF
COUNTER
216
EXT
4
A0
ISL29020
TIMING
PROCESS
ARRAY
DATA
I2C/SMBus
1
2
3
6
5
4
VDD
GND
REXT
SDA
SCL
A0
*EXPOSED PAD CAN BE CONNECTED TO GND OR
ELECTRICALLY ISOLATED
Data Sheet
August 20, 2009
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Copyright Intersil Americas LLC 2008, 2009. All Rights Reserved
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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