DATASHEET
ISL29035
Integrated Digital Light Sensor with Interrupt
The
ISL29035
is an integrated ambient and infrared
light-to-digital converter with I
2
C (SMBus compatible) Interface. Its
advanced self-calibrated photodiode array emulates human eye
response with excellent IR rejection. The on-chip ADC is capable
of rejecting 50Hz and 60Hz flicker caused by artificial light
sources. The Lux range select feature allows users to program the
Lux range for optimized counts/Lux.
For ambient light sensing, an internal 16-bit ADC has been
designed based upon the charge-balancing technique. The
ADC conversion time is nominally 105ms and is user
adjustable from 11µs to 105ms, depending on oscillator
frequency and ADC resolution. In normal operation, typical
current consumption is 57µA. 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 I
2
C
interface. The power consumption can be reduced to less than
0.3µA when powered down.
The ISL29035 supports a software brownout condition
detection. The device powers up with the brownout bit asserted
until the host clears it through the I
2
C interface.
The ISL29035 supports a software and hardware interrupt that
remains asserted until the host clears it through the I
2
C
interface. Function of ADC conversion continues without
stopping after interrupt is asserted.
Designed to operate on supplies from 2.25V to 3.63V with an I
2
C
supply from 1.7V to 3.63V, the ISL29035 is specified for
operation across the -40°C to +85°C ambient temperature
range.
FN8371
Rev 3.00
December 12, 2016
Features
• Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-bit ADC
• Wide dynamic range . . . . . . . . . . . . . . . . . . . . . . . . . .1:4,200,000
• Integrated noise reduction . . . . . . . . . . . . . . . . . . . . . 50/60Hz
• Close to human eye response with excellent IR/UV rejection
• Shutdown modes. . . . . . . . . . . . . . . . . . . .software and automatic
• Programmable interrupt threshold with persistence filter
• Supply current (typical) . . . . . . . . . . . . . . . . . . . . . . . . . . . 57µA
• Shutdown current (maximum) . . . . . . . . . . . . . . . . . . . 0.51µA
• I
2
C (SMB compatible) power supply . . . . . . . . . 1.7V to 3.63V
• Sensor power supply . . . . . . . . . . . . . . . . . . . . . 2.25V to 3.63V
• Operating temperature range. . . . . . . . . . . . . -40°C to +85°C
• Small form factor package . . . . . . . 6 Ld 1.5x1.6x0.75 ODFN
Applications
• Mobile devices: smart phone, PDA, GPS
• Computing devices: notebook PC, MacBook, tablets
• Consumer devices: LCD-TV, digital camera
• Industrial and medical light sensing
Related Literature
•
AN1591,
“Evaluation Hardware/Software Manual for ALS
and Proximity Sensor”
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
PART NUMBER
ISL29034
ISL29035
ALS SENSING
Yes
Yes
INTERRUPT PIN
No
Yes
NUMBER OF
PINS
4 Ld
6 Ld
FN8371 Rev 3.00
December 12, 2016
Page 1 of 17
ISL29035
100
VDD_PULLUP
4.7k 4.7k
4.7k
1
VDD
SDA
6
SDA
VDD
1µF
1.2
1.0
0.8
AMBIENT LIGHT SENSOR
0.6
0.4
0.2
0
300
MCU
SCL
5
SCL
ISL29035
NC
3
GPIO
4
INT
GND
2
NORMALIZED RESPONSE
HUMAN EYE
400
500
600
700
800
900
1000
1100
WAVELENGTH (nm)
FIGURE 1. ISL29035 TYPICAL APPLICATION DIAGRAM
FIGURE 2. NORMALIZED SPECTRAL RESPONSE FOR AMBIENT
LIGHT SENSING
FN8371 Rev 3.00
December 12, 2016
Page 2 of 17
ISL29035
Block Diagram
VDD
1
IREF
R
500k
PHOTODIODE
ARRAY
LIGHT DATA
PROCESS
f
OSC
COMMAND
REGISTER
CMD
Register
I
2
C/SMB
INTEGRATING
ADC
DATA
Register
INTERRUPT
5
6
SCL
SDA
2
4
GND
INT
FIGURE 3. BLOCK DIAGRAM
Pin Configuration
ISL29035
(6 LD ODFN)
TOP VIEW
VDD
GND
NC
1
2
3
6
5
4
SDA
SCL
INT
Pin Descriptions
PIN
NUMBER
1
2
3
4
PIN NAME
VDD
GND
NC
INT
Positive supply
Ground pin
No connect
Interrupt pin; LOW for interrupt alarming. INT pin
is an open-drain. INT remains asserted until the
interrupt status bit is reset.
I
2
C serial clock
I
2
C serial data
DESCRIPTION
5
6
SCL
SDA
Ordering Information
PART NUMBER
(Notes
1, 2, 3)
ISL29035IROZ-T7
ISL29035IROZ-T7A
ISL29035EVAL1Z
NOTES:
1. Please refer to
TB347
for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu-Ag
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.
3. For Moisture Sensitivity Level (MSL), please see product information page for
ISL29035.
For more information on MSL, please see tech brief
TB477.
TEMP RANGE
(°C)
-40 to +85
-40 to +85
Evaluation Board
TAPE AND REEL
(UNITS)
3k units
250 units
PACKAGE
(RoHS COMPLIANT)
6 Ld ODFN
6 Ld ODFN
PKG.
DWG. #
L6.1.5x1.6
L6.1.5x1.6
FN8371 Rev 3.00
December 12, 2016
Page 3 of 17
ISL29035
Absolute Maximum Ratings
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +4.0V
I
2
C Bus (SCL, SDA) and INT Pin Voltage. . . . . . . . . . . . . . . . . . -0.2V to 4.0V
I
2
C Bus (SCL, SDA) and INT Pin Current. . . . . . . . . . . . . . . . . . . . . . . <10mA
Input Voltage Slew Rate (Maximum) . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1V/µs
ESD Ratings
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3kV
Thermal Information
Thermal Resistance (Typical)
JA
(°C/W)
210
6 Ld ODFN Package (Note
4)
. . . . . . . . . . . . . . . . . . . . .
Maximum Junction Temperature (TJ
MAX
). . . . . . . . . . . . . . . . . . . . . . . +90°C
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see
TB477
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.
NOTE:
4.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief
TB379.
Electrical Specifications
DESCRIPTION
Power Supply Range
Supply Current
Supply Current when Powered Down
Supply Voltage Range for I
2
C Interface
ADC Integration/Conversion Time
I
2
C Clock Rate Range
Count Output when Dark
Full Scale ADC Code
Part-to-Part Variation (3 Population)
V
DD
= 3.0V, T
A
= +25°C, 16-bit ADC operation, unless otherwise specified.
PARAMETER
V
DD
I
DD
I
DD1
V
I2C
t
int
F
I2C
DATA_0
DATA_F
%/Value
ADC
R0
ADC
R1
ADC
R2
ADC
R3
ADC_IR
R0
ADC_IR
R1
ADC_IR
R2
ADC_IR
R3
I
SDA
I
INT
E = 300 Lux, cold white LED
Range 0 (1k Lux)
E = 300 Lux, cold white LED (Note
5),
ALS Range 0 (1k Lux)
E = 300 Lux, cold white LED (Note
5),
ALS Range 1 (4k Lux)
E = 300 Lux, cold white LED (Note
5),
ALS Range 2 (16k Lux)
E = 300 Lux, cold white LED (Note
5),
ALS Range 3 (64k Lux)
Range 0 (1k Lux)
Range 1 (4k Lux)
Range 2 (16k Lux)
Range 3 (64k Lux)
4
4
1402
±5
20473
5100
1400
366
1997
481
148
42
5
5
2598
E = 0 Lux, Range 0 (1k Lux)
16-bit ADC data
Software disabled or auto power-down
1.7
105
400
1
5
65535
TEST CONDITIONS
MIN
(Note
7)
2.25
57
0.24
TYP
MAX
(Note
7)
3.63
85
0.51
3.63
UNIT
V
µA
µA
V
ms
kHz
Counts
Counts
%
Counts
Counts
Counts
Counts
Counts
Counts
Counts
Counts
mA
mA
Light Count Output with LSB of 0.015 Lux/Count
Light Count Output with LSB of 0.06 Lux/Count
Light Count Output with LSB of 0.24 Lux/Count
Light Count Output with LSB of 0.96 Lux/Count
Infrared Count Output (Note
6)
Infrared Count Output (Note
6)
Infrared Count Output (Note
6)
Infrared Count Output (Note
6)
SDA Current Sinking Capability
INT Current Sinking Capability
NOTES:
5. 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 Cold White LED.
6. 850nm IR LED is used in production test. The 850nm LED irradiance is calibrated to produce the same DATA_IR count against and illuminance level
of 210 lux sunlight at sea level.
7. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
FN8371 Rev 3.00
December 12, 2016
Page 4 of 17
ISL29035
I
2
C Interface Specifications
PARAMETER
SDA and SCL Input Buffer LOW Voltage
SDA and SCL Input Buffer HIGH Voltage
SDA and SCL Input Buffer Hysteresis
SDA Output Buffer LOW Voltage
(Open-Drain), Sinking 4mA
SDA and SCL Pin Capacitance
SCL Frequency
Pulse Width Suppression Time at SDA
and SCL Inputs
SCL Falling Edge to SDA Output Data Valid
Time the Bus Must be Free before the
Start of a New Transmission
Clock LOW Time
Clock HIGH Time
START Condition Set-Up Time
START Condition Hold Time
Input Data Set-Up Time
Input Data Hold Time
STOP Condition Set-Up Time
STOP Condition Hold Time
Output Data Hold Time
SDA and SCL Rise Time
SDA and SCL Fall Time
Capacitive Loading of SDA or SCL
SDA and SCL Bus Pull-Up Resistor
Off-Chip
NOTES:
V
DD
= 3.0V, T
A
= +25°C, 16-bit ADC operation, unless otherwise specified.
SYMBOL
V
IL
V
IH
V
Hys
(Note
8)
V
OL
(Note
8)
C
PIN
(Note
8)
f
SCL
t
IN
t
AA
t
BUF
t
LOW
t
HIGH
t
SU:STA
t
HD:STA
t
SU:DAT
t
HD:DAT
t
SU:STO
t
HD:STO
t
DH
t
R
(Note
8)
t
F
(Note
8)
C
b
(Note
10)
R
PU
(Note
8)
Total on-chip and off-chip
Maximum is determined by t
R
and t
F
.
For Cb = 400pF, max is about 2kΩ ~ 2.5kΩ
For Cb = 40pF, max is about 15kΩ ~ 20kΩ
1
1300
1300
600
600
600
100
30
600
600
0
20 + 0.1 x
Cb
20 + 0.1 x
Cb
400
Any pulse narrower than the maximum
specification is suppressed
T
A
= +25°C, f = 1MHz, V
DD
= 5V, V
IN
= 0V,
V
OUT
= 0V
0
1.25
0.05 x
V
DD
0.06
0.4
10
400
50
900
TEST CONDITIONS
MIN
(Note
7)
TYP
MAX
(Note
7)
0.55
UNIT
V
V
V
V
pF
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
k
8. Limits should be considered typical and are not production tested.
9. These are I
2
C specific parameters and are not tested, however, they are used to set conditions for testing devices to validate specification.
10. C
b
is the capacitance of the bus in pF.
FN8371 Rev 3.00
December 12, 2016
Page 5 of 17
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