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PDF ISL29003 Data sheet ( Hoja de datos )
| Número de pieza | ISL29003 | |
| Descripción | Light-to-Digital Output Sensor | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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®
Data Sheet
December 12, 2006
ISL29003
FN7464.2
Light-to-Digital Output Sensor with High
Sensitivity, Gain Selection, Interrupt
Function and I2C Interface
The ISL29003 is an integrated light sensors 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 less than 300µA.
Furthermore, an available software power-down mode
controlled via the I2C interface reduces power consumption
to less than 1µA.
The ISL29003 supports a hardware interrupt that remains
asserted low until the host clears it through I2C interface.
Designed to operate on supplies from 2.5V to 3.3V, the
ISL29003 is specified for operation over the -40°C to +85°C
ambient temperature range.
Ordering Information
www.DataSheet4U.com PART NUMBER
TAPE &
REEL
PACKAGE
PKG.
DWG. #
ISL29003IROZ-T7
(Note)
7” 6 Ld ODFN L6.2X2.1
(Pb-free)
ISL29003IROZ-EVAL Evaluation Board (Pb-free)
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.
Block Diagram
VDD
1
PHOTODIODE 1
MUX
INTEGRATING
ADC
PHOTODIODE 2
IREF
FOSC
3
REXT
EXT
TIMING
216
COUNTER
2
GND
ISL29003
COMMAND
REGISTER
DATA
REGISTER
I2C
5 SCL
6 SDA
INT
INTERRUPT
4 INT
Features
• Range select via I2C
- Range 1 = 0Lux to 1000Lux
- Range 2 = 0Lux to 4000Lux
- Range 3 = 0Lux to 16,000Lux
- Range 4 = 0Lux to 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
• IR + UV rejection
• 50Hz/60Hz rejection
• 2.5V to 3.3V supply
• 6 Ld ODFN (2.1mm x 2mm)
• Pb-free available (RoHS compliant)
Applications
• Ambient light sensing
• Backlight control
• Temperature control systems
• Contrast control
• Camera light meters
• Lighting controls
Pinout
ISL29003
(6 LD ODFN)
TOP VIEW
VDD 1
6 SDA
GND 2
REXT 3
THERMAL
PAD
5 SCL
4 INT
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL29003
Register Set
There are eight registers that are available in the ISL29003. Table 1 summarizes the available registers and their functions.
TABLE 1. REGISTER SET
ADDR
(HEX)
REGISTER
NAME
Bit(s) FUNCTION NAME
FUNCTIONS/
DESCRIPTION
00 Command
7
enable
0: disable adc-core
1: enable adc-core
6
adcPD
0: Normal operation
1: Power Down Mode
5 Timing_Mode 0: Integration is internally timed
1: Integration is externally sync/controlled by I2C host
4 reserved
3:2
mode<1:0>
Selects ADC work mode
0: Diode1’s current to unsigned 16-bit data
1: Diode2’s current to unsigned 16-bit data
2: Difference between diodes (I1 - I2) to signed 15-bit data
3: reserved
1:0
width<1:0>
number of clock cycles; n-bit resolution
0: 216 cycles
1: 212 cycles
2: 28 cycles
3: 24 cycles
01 Control
7
ext_mode
Always set to logic 0. Factory use only.
6
test_mode
Always set to logic 0
5
int_flag
0: Interrupt is cleared or not yet triggered
1: Interrupt is triggered
4
reserved
Always set to logic 0. Factory use only.
3:2
gain<1:0>
Selects the gain so range is
0: 0 - 1000Lux
1: 0 - 4000Lux
2: 0 - 16000Lux
3: 0 - 64000Lux
1:0
int_persist
Interrupt is triggered after
<1:0>
0: 1 integration cycle
1: 4 integration cycles
2: 8 integration cycles
3: 16 integration cycles
02 Interrupt threshold 7:0 Interrupt threshold High byte of HI interrupt threshold. Default is 0xFF
HI HI
03 Interrupt threshold 7:0 Interrupt threshold High byte of the LO interrupt threshold. Default is 0x00
LO LO
04 LSB_sensor 7:0 LSB_sensor Read-Only data register that contains the least significant byte of the
latest sensor reading
05 MSB_sensor 7:0 MSB_sensor Read-Only data register that contains the most significant byte of the
latest sensor reading
06
LSB_timer
7:0
LSB_timer
Read-Only data register that contains the least significant byte of the
timer counter value corresponding to the latest sensor reading.
07
MSB_timer
7:0
MSB_timer
Read-Only data register that contains the most significant byte of the
timer counter value corresponding to the latest sensor reading.
5 FN7464.2
December 12, 2006
5 Page 
ISL29003
TABLE 16. RECOMMENDED DIMENSIONS FOR A FLAT
WINDOW DESIGN
DTOTAL
1.5
D1
0.50
DLENS @ 35
VIEWING ANGLE
2.25
DLENS @ 45
VIEWING ANGLE
3.75
2.0 1.00
3.00
4.75
2.5 1.50
3.75
5.75
3.0 2.00
4.30
6.75
3.5 2.50
5.00
7.75
t=1
D1
DLENS
DTOTAL
Thickness of lens
Distance between ISL29001 and inner edge of lens
Diameter of lens
Distance constraint between the ISL29001 and lens
outer edge
* All dimensions are in mm.
DLENS
Window with Light Guide Design
If a smaller window is desired while maintaining a wide
effective viewing angle of the ISL29003, a cylindrical piece of
transparent plastic is needed to trap the light and then focus
and guide the light on to the device. Hence the name light
guide or also known as light pipe. The pipe should be placed
directly on top of the device with a distance of D1 = 0.5mm
to achieve peak performance. The light pipe should have
minimum of 1.5mm in diameter to ensure that whole area of
the sensor will be exposed. See Figure 5.
D2 > 1.5mm
LIGHT PIPE
t
L
D2 DLENS
ISL29003
FIGURE 5. WINDOW WITH LIGHT GUIDE/PIPE
11 FN7464.2
December 12, 2006
11 Page | ||
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| PDF Descargar | [ Datasheet ISL29003.PDF ] | |
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