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Renesas Electronics Components Datasheet

ISL29020 Datasheet

Light-to Digital Sensor

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DATASHEET
ISL29020
A Low Power, High Sensitivity, Light-to Digital Sensor With I2C Interface
FN6505
Rev 1.00
August 20, 2009
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.
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.
Block Diagram
VDD
1
PHOTODIODE
ARRAY
LIGHT
DATA
PROCESS
IREF
INTEGRATING
ADC
EXT
TIMING
fOSC
COU2N16TER
3
REXT
2
GND
ISL29020
COMMAND
REGISTER
DATA
REGISTER
I2C/SMBus
5 SCL
6 SDA
4
A0
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
VDD 1
6 SDA
GND 2
5 SCL
REXT 3
4 A0
*EXPOSED PAD CAN BE CONNECTED TO GND OR
ELECTRICALLY ISOLATED
FN6505 Rev 1.00
August 20, 2009
Page 1 of 11


Renesas Electronics Components Datasheet

ISL29020 Datasheet

Light-to Digital Sensor

No Preview Available !

ISL29020
Absolute Maximum Ratings (TA = +25°C)
IV2DCDBusSuPpinplVyoVltoalgtaege(SbCeLtw, SeDenA)V.D.D.
and GND
........
.
.
.
.
.
.
.
.
.
.
.
.
.....
-0.2V
..
to
3.6V
3.6V
I2C Bus Pin Current (SCL, SDA) . . . . . . . . . . . . . . . . . . . . . . <10mA
REXT, A0 Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . . -0.2V to VDD
ESD Rating
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2kV
Thermal Information
Thermal Resistance
JA (°C/W)
6 Ld ODFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
88
Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . +90°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications VDD = 3V, TA = +25°C, REXT = 500k1% tolerance, 16-bit ADC operation, unless otherwise specified.
PARAMETER
DESCRIPTION
CONDITION
MIN TYP MAX UNIT
VDD
IDD
IDD1
VI2C
fOSC
tint
FI2C
DATA_0
Power Supply Range
Supply Current
Supply Current when Powered Down Software disabled or auto power-down
Supply Voltage Range for I2C Interface
Internal Oscillator Frequency
ADC Integration/Conversion Time
I2C Clock Rate Range
16-bit ADC data
Count Output When Dark
E = 0 lux, Range 1 (1k lux)
2.25 3.3 V
55 65 µA
0.01 0.5 µA
1.7 3.6 V
650 725 800 kHz
90 ms
1 to 400
kHz
1 5 Counts
DATA_F
Full Scale ADC Code
65535 Counts
DATA
DATA
Count Output Variation Over Three Light Ambient light sensing
Sources: Fluorescent, Incandescent
and Sunlight
±10 %
DATA_1
Light Count Output With LSB of
0.015 lux/count
E = 300 lux, Fluorescent light (Note 1), Ambient light
sensing, Range 1 (1k lux)
15000 20000 25000 Counts
DATA_2
Light Count Output With LSB of
0.06 lux/count
E = 300 lux, Fluorescent light (Note 1), Ambient light
sensing, Range 2 (4k lux)
5000
Counts
DATA_3
Light Count Output With LSB of
0.24 lux/count
E = 300 lux, Fluorescent light (Note 1), Ambient light
sensing, Range 3 (16k lux)
1250
Counts
DATA_4
Light Count Output With LSB of
0.96 lux/count
E = 300 lux, Fluorescent light (Note 1), Ambient light
sensing, Range 4 (64k lux)
312 Counts
DATA_IR1 Infrared Count Output
E = 210 lux, Sunlight (Note 2), IR sensing, Range 1
15000 20000 25000
DATA_IR2 Infrared Count Output
E = 210 lux, Sunlight (Note 2), IR sensing, Range 2
5000
DATA_IR3 Infrared Count Output
E = 210 lux, Sunlight (Note 2), IR sensing, Range 3
1250
DATA_IR4 Infrared Count Output
E = 210 lux, Sunlight (Note 2), IR sensing, Range 4
312
VREF
Voltage of REXT Pin
0.52 V
VIL SCL and SDA Input Low Voltage
0.55 V
VIH SCL and SDA Input High Voltage
1.25 V
ISDA
SDA Current Sinking Capability
45
mA
NOTES:
1. 550nm green LED is used in production test. The 550nm LED irradiance is calibrated to produce the same DATA count against an illuminance
level of 300 lux fluorscent light.
2. 850nm green LED is used in production test. The 850nm LED irradiance is calibrated to produce the same DATA_IR count against an illuminance
level of 210 lux sunlight at sea level.
FN6505 Rev 1.00
August 20, 2009
Page 2 of 11


Part Number ISL29020
Description Light-to Digital Sensor
Maker Renesas
Total Page 11 Pages
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