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PDF ISL29013 Data sheet ( Hoja de datos )
| Número de pieza | ISL29013 | |
| Descripción | Light-to-Digital Output Sensor | |
| Fabricantes | Intersil Corporation | |
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ISL29013
®
www.DataSheet4U.com
Data Sheet
February 13, 2008
FN6485.0
Light-to-Digital Output Sensor with High
Sensitivity, Gain Selection, Interrupt
Function and I2C Interface
The ISL29013 is an integrated light sensor with I2C
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 I2C interface, reducing power consumption
to less than 1µA.
The ISL29013 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
ISL29013 is specified for operation over the -40°C to +85°C
ambient temperature range.
Ordering Information
PART NUMBER
(Note)
TEMP.
PACKAGE
RANGE (°C) (Pb-Free)
PKG.
DWG. #
ISL29013IROZ-T7*
-40 to +85 6 Ld ODFN L6.2x2.1
ISL29013IROZ-EVALZ Evaluation Board
*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.
Block Diagram
VDD
1
LIGHT DATA
PROCESS
PHOTODIODE
ARRAY
IREF
FOSC
3
REXT
INTEGRATING
ADC
EXT
TIMING
216
COUNTER
2
GND
ISL29013
COMMAND
REGISTER
DATA
REGISTER
I2C
5 SCL
6 SDA
INT
INTERRUPT 4 INT
Features
• Range select via I2C
- 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
• 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
- Mobile Devices: Smart phone, PDA, and GPS
- Computing devices: Notebook PC, UMPC web pod
- Consumer devices: LCD-TV, digital picture frame, and
digital cameras
• Industrial and medical light sensing
Pinout
ISL29013
(6 LD ODFN)
TOP VIEW
VDD 1
GND 2
REXT 3
6 SDA
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. 2008. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL29013
Register Set
There are eight registers that are available in the ISL29013. Table 1 summarizes the available registers and their functions.
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TABLE 1. REGISTER SET
BIT
ADDR REG NAME
7
6
5
4
3 2 1 0 DEFAULT
00h COMMAND ADCE
ADCPD
TIMM
0
ADCM1 ADCM0
RES1
RES0
00h
01h CONTROL
0
0 INT_FLAG
0
GAIN1
GAIN0
IC1
IC0
00h
02h Interrupt ITH_HI7 ITH_HI6
Threshold_HI
ITH_HI5
ITH_HI4
ITH_HI3 ITH_HI2 ITH_HI1 ITH_HI0
FFh
03h Interrupt ITH_LO7 ITH_LO6
Threshold_LO
ITH_LO5
ITH_LO4
ITH_LO3 ITH_LO2 ITH_LO1 ITH_LO0
00h
04h LSB SENSOR S7
S6
S5
S4
S3 S2 S1 S0 00h
05h MSB S15 S14 S13 S12
S11 S10
S9
S8
00h
SENSOR
06h LSB TIMER
T7
T6
T5
T4
T3 T2 T1 T0 00h
07h MSB TIMER T15 T14 T13
T12
T11 T10
T9
T8
00h
TABLE 2. WRITE ONLY REGISTERS
REGISTER
FUNCTIONS/
ADDRESS NAME
DESCRIPTION
b1xxx_xxxx sync_I2C Writing a logic 1 to this address bit ends the
current ADC-integration and starts another.
Used only with External Timing Mode.
bx1xx_xxxx clar_int Writing a logic 1 to this address bit clears
the interrupt.
Command Register 00(hex)
The Read/Write command register has five functions:
1. Enable; Bit 7.This function either resets the ADC or enables
the ADC in normal operation. A logic 0 disables ADC to
reset-mode. A logic 1 enables ADC to normal operation.
TABLE 3. ENABLE
BIT 7
OPERATION
0 disable ADC-core to reset-mode (default)
1 enable ADC-core to normal operation
2. ADCPD; Bit 6. This function puts the device in a power
down mode. A logic 0 puts the device in normal
operation. A logic 1 powers down the device.
TABLE 4. ADCPD
BIT 6
OPERATION
0 Normal operation (default)
1 Power Down
3. Timing Mode; Bit 5. This function determines whether the
integration time is done internally or externally. In Internal
Timing Mode, integration time is determined by an
internal dual speed oscillator (fOSC), and the n-bit (n = 4,
8, 12,16) counter inside the ADC. In External Timing
Mode, integration time is determined by the time between
three consecutive external-sync sync_I2C pulses
commands.
BIT 5
0
1
TABLE 5. TIMING MODE
OPERATION
Internal Timing Mode. Integration time is internally timed
determined by fOSC, REXT, and number of clock cycles.
External Timing Mode. Integration time is externally
timed by the I2C host.
4. Photodiode Select Mode; Bits 3 and 2. Setting Bit 3 and
Bit 2 to 1 and 0 enables ADC to give light count DATA
output.
TABLE 6. PHOTODIODE SELECT MODE; BITS 2 AND 3
BITS 3:2
MODE
0:0 Disable ADC
0:1 Disable ADC
1:0 Light count DATA output in signed (n-1) bit *
1:1 No operation.
* n = 4, 8, 12,16 depending on the number of clock cycles
function.
5. Width; Bits 1 and 0. This function determines the number
of clock cycles per conversion. Changing the number of
clock cycles does more than just change the resolution of
the device. It also changes the integration time, which is
the period the device’s analog-to-digital (A/D) converter
samples the photodiode current signal for a lux
measurement.
.
TABLE 7. WIDTH
BITS 1:0
0:0
0:1
1:0
1:1
NUMBER OF CLOCK CYCLES
216 = 65,536
212 = 4,096
28 = 256
24 = 16
5 FN6485.0
February 13, 2008
5 Page 
ISL29013
Typical Performance Curves (REXT = 100kΩ)
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1.0
HUMAN EYE RESPONSE
0.8
0.6 ISL29013 RESPONSE
0.4
0.2
0.0
-0.2
300 400
600 800
WAVELENGTH (nm)
1.0k
FIGURE 7. SPECTRAL RESPONSE
1.1k
RADIATION PATTERN
20°
LUMINOSITY 30°
ANGLE 40°
10°
0°
50°
60°
10° 20°
30°
40°
50°
60°
70° 70°
80° 80°
90° 90°
0.2 0.4 0.6 0.8 1.0
RELATIVE SENSITIVITY
FIGURE 8. RADIATION PATTERN
1.2
1.0
SUN
0.8
HALOGEN
0.6 INCANDESCENT
0.4 FLUORESCENT
0.2
0
300 400 500 600 700 800 900 1000 1100
WAVELENGTH (nm)
FIGURE 9. SPECTRUM OF LIGHT SOURCES FOR
MEASUREMENT
10
TA = +27°C
0 lux
8
6
4
RANGE 2
2
0
2.0 2.3 2.6 2.9 3.2 3.5 3.8
SUPPLY VOLTAGE (V)
FIGURE 11. OUTPUT CODE FOR 0 LUX vs SUPPLY VOLTAGE
320
TA = +27°C
306
5000 lux
292
278
200 lux
264
250
2.0 2.3 2.6 2.9 3.2 3.5 3.8
SUPPLY VOLTAGE (V)
FIGURE 10. SUPPLY CURRENT vs SUPPLY VOLTAGE
1.015
1.010
1.005
5000 lux
TA = +27°C
1.000
0.995
200 lux
0.990
2.0
2.3 2.6 2.9 3.2 3.5
SUPPLY VOLTAGE (V)
3.8
FIGURE 12. OUTPUT CODE vs SUPPLY VOLTAGE
11 FN6485.0
February 13, 2008
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet ISL29013.PDF ] | |
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