isl29013 Intersil Corporation, isl29013 Datasheet

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isl29013

Manufacturer Part Number
isl29013
Description
Light-to-digital Output Sensor With High Sensitivity, Gain Selection, Interrupt Function And I2c Interface
Manufacturer
Intersil Corporation
Datasheet

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isl29013IROZ-T7
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Light-to-Digital Output Sensor with High
Sensitivity, Gain Selection, Interrupt
Function and I
The ISL29013 is an integrated light sensor with I
interface. It has an internal signed15-bit integrating type
ADC designed based on the charge-balancing A/D
conversion technique. 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, power consumption is typically 250µA.
Furthermore, a power-down mode can be controlled by
software via the I
to less than 1µA.
The ISL29013 supports a hardware interrupt that remains
asserted low until the host clears it through I
Designed to operate on supplies from 2.5V to 3.3V, the
ISL29013 is specified for operation over the -40°C to +85°C
ambient temperature range.
Ordering Information
Block Diagram
ISL29013IROZ-T7*
ISL29013IROZ-EVALZ
*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 100% matte tin plate - e3 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.
PHOTODIODE
PART NUMBER
ARRAY
LIGHT DATA
PROCESS
REXT
(Note)
3
FOSC
IREF
2
C interface, reducing power consumption
VDD
1
2
C Interface
INTEGRATING
Evaluation Board
RANGE (° C)
COUNTER
-40 to +85
ADC
GND
2
ISL29013
TEMP.
16
2
®
EXT
TIMING
1
6 Ld ODFN
Data Sheet
PACKAGE
(Pb-Free)
INT
COMMAND
REGISTER
REGISTER
INTERRUPT
2
DATA
C interface.
I
2
C
2
C
L6.2x2.1
DWG. #
PKG.
1-888-INTERSIL or 1-888-468-3774
5
6
4 INT
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
SCL
SDA
Features
• Range select via I
• Human eye response (540nm peak sensitivity)
• Temperature compensated
• Signed 15-bit resolution
• Adjustable resolution: up to 20 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 (2.1mmx2mm)
• Pb-free (RoHS compliant)
• Operating temperature range: -40°C to 85°C
Applications
• Display and keypad backlight dimming for
• Industrial and medical light sensing
Pinout
- Range 1 = 0 lux to 2,000 lux
- Range 2 = 0 lux to 8,000 lux
- Range 3 = 0 lux to 32,000 lux
- Range 4 = 0 lux to 128,000 lux
- Mobile Devices: Smart phone, PDA, and GPS
- Computing devices: Notebook PC, UMPC web pod
- Consumer devices: LCD-TV, digital picture frame, and
February 13, 2008
digital cameras
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
REXT
GND
VDD
Copyright © Intersil Americas Inc. 2008. All Rights Reserved.
2
C
1
2
3
(6 LD ODFN)
TOP VIEW
ISL29013
6
5
4
SDA
SCL
INT
ISL29013
FN6485.0

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isl29013 Summary of contents

Page 1

... C interface, reducing power consumption to less than 1µA. The ISL29013 supports a hardware interrupt that remains asserted low until the host clears it through I Designed to operate on supplies from 2.5V to 3.3V, the ISL29013 is specified for operation over the -40°C to +85°C ambient temperature range. Ordering Information PART NUMBER TEMP. ...

Page 2

... NOTES: 2. Fluorescent light is substituted by a green LED during production. 3. The voltage threshold levels of the SDA and SCL pins are VDD dependent ISL29013 Thermal Information = +25°C) Thermal Resistance (Typical, Note 1) 6 Lead ODFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

... I C Interface 2 C There are eight (8) 8-bit registers available inside the ISL29013. The command and control registers define the operation of the device. The command and control registers do not change until the registers are overwritten. There are two 8-bit registers that set the high and low interrupt thresholds. There are four 8-bit data Read Only registers ...

Page 4

... SDA Out SDA DRIVEN BY MASTER CLK In Start SDA SDA Out CLK In 4 ISL29013 A REGISTER ADDRESS A STOP START SDA DRIVEN BY MASTER ...

Page 5

... Register Set There are eight registers that are available in the ISL29013. Table 1 summarizes the available registers and their functions. ADDR REG NAME 7 00h COMMAND ADCE ADCPD 01h CONTROL 0 02h Interrupt ITH_HI7 ITH_HI6 Threshold_HI 03h Interrupt ITH_LO7 ITH_LO6 Threshold_LO 04h LSB SENSOR ...

Page 6

... Calculating Lux The ISL29013’s output codes, DATA, are directly proportional to lux The proportionality constant D is determined by the Full Scale Range (FSR), and the n-bit ADC which is user defined in the command register. The proportionality constant can also be viewed as the resolution ...

Page 7

... Integration time affects the measurement resolution. For better resolution, use a longer integration time. For short and fast conversions use a shorter integration time. The ISL29013 offers user flexibility in the integration time to balance resolution, speed and noise rejection. Integration time can be set internally or externally and can be programmed in the command register 00(hex) Bit 5 ...

Page 8

... A thickness 1mm is recommended for a window lens design. The bigger the diameter of the window lens the wider the viewing angle is of the ISL29013. Table 14 shows the recommended dimensions of the optical window to ensure both 35° and 45° vie wing angle. These dimensions are based on a window lens thickness of 1 ...

Page 9

... All dimensions are in mm. Window with Light Guide Design If a smaller window is desired while maintaining a wide effective viewing angle of the ISL29013, 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 ...

Page 10

... REXT ISL29013 100k 10 ISL29013 Typical Circuit A typical application for the ISL29013 is shown in Figure 6. The ISL29013’s I 1000100. The device can be tied onto a system’s I together with other I Soldering Considerations Convection heating is recommended for reflow soldering; direct-infrared heating is not recommended. The plastic ODFN package does not require a custom reflow soldering profile, and is qualified to +260° ...

Page 11

... Typical Performance Curves 1.2 HUMAN EYE RESPONSE 1.0 0.8 0.6 ISL29013 RESPONSE 0.4 0.2 0.0 -0.2 300 400 600 WAVELENGTH (nm) FIGURE 7. SPECTRAL RESPONSE 1.2 1.0 0.8 0.6 0.4 0.2 0 300 400 500 600 700 WAVELENGTH (nm) FIGURE 9. SPECTRUM OF LIGHT SOURCES FOR MEASUREMENT +27° lux RANGE 2.0 2.3 2.6 2.9 SUPPLY VOLTAGE (V) FIGURE 11. OUTPUT CODE FOR 0 LUX vs SUPPLY VOLTAGE ...

Page 12

... TEMPERATURE (°C) FIGURE 15. OUTPUT CODE FOR 0 LUX vs TEMPERATURE 330 329 328 327 326 325 -60 -20 20 TEMPERATURE (°C) FIGURE 17. OSCILLATOR FREQUENCY vs TEMPERATURE 12 ISL29013 (R = 100k:) (Continued) EXT 315 T = +27°C A 305 295 285 275 265 3.2 3.5 3.8 -60 FIGURE 14. SUPPLY CURRENT vs TEMPERATURE 1.080 1.048 1 ...

Page 13

... 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 13 ISL29013 (R = 100k:) (Continued) EXT ...

Page 14

... TOP VIEW ( 95) TYPICAL RECOMMENDED LAND PATTERN 14 ISL29013 ± 35 NOTES: 1 ...

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