Light-to-Digital Output Sensor with Gain Selection, Interrupt Function and
I
2
C Interface
The
ISL76683
is an integrated light sensor with an internal
integrating ADC intended for automotive applications. The ADC
provides 16-bit resolution and is capable of rejecting 50Hz and
60Hz flicker caused by artificial light sources. The I
2
C interface
provides four user programmable lux sensitivity ranges for
optimized counts/lux in a variety of lighting conditions. The I
2
C
interface also provides multi-function control of the sensor and
remote monitoring capabilities.
In normal operation, power consumption is less than 300µA.
Furthermore, a software power-down mode controlled with the
I
2
C interface reduces power consumption to less than 1µA.
The ISL76683 supports twin (upper and lower) user
programmed thresholds and provides a hardware interrupt
that remains asserted low until the host clears it with the I
2
C
control interface.
The ISL76683 is designed to operate on supplies from 2.5V to
3.3V, and is AEC-Q100 qualified and specified for operation
across the -40°C to +105°C (grade 2) ambient temperature
range. To achieve this, the ISL76683 is packaged in a special
extended temperature clear package.
FN7697
Rev 9.00
Mar 2, 2018
Features
• Range select with I
2
C
- Range 1 = 0 lux to 1000 lux
- Range 2 = 0 lux to 4000 lux
- Range 3 = 0 lux to 16000 lux
- Range 4 = 0 lux to 64000 lux
• Human eye response (540nm peak sensitivity)
• Temperature compensated
• 16-bit resolution
• Adjustable sensitivity: 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 (2.1mmx2mm)
•
AEC-Q100
qualified
• Pb-free (RoHS compliant)
Related Literature
For a full list of related documents, visit our website
•
ISL76683
product page
Applications
• Automotive ambient light sensing
• Backlight control
• Lighting controls
VDD
1
PHOTODIODE 1
GAIN/RANGE
INT TIME
MODE
SHDN
COMMAND
REGISTER
DATA
REGISTER
5
SCL
SDA
MUX
INTEGRATING
ADC
PHOTODIODE 2
IREF
FOSC
EXT
TIMING
I
2
C
6
INT
2
16
COUNTER
INTERRUPT
4 INT
3
REXT
2
GND
ISL76683
FIGURE 1. BLOCK DIAGRAM
FN7697 Rev 9.00
Mar 2, 2018
Page 1 of 18
ISL76683
Pin Configuration
ISL76683
(6 LD ODFN)
TOP VIEW
VDD 1
GND 2
REXT 3
THERMAL
PAD
6 SDA
5 SCL
4 INT
Pin Descriptions
PIN NUMBER
1
2
3
4
5
6
PIN NAME
VDD
GND
REXT
INT
SCL
SDA
DESCRIPTION
Positive supply. Connect this pin to a regulated 2.5V to 3.3V supply
Ground pin. The thermal pad is connected to the GND pin
External resistor pin for ADC reference. Connect this pin to ground through a (nominal) 100k resistor
Interrupt pin; LO for interrupt/alarming. The INT pin is an open drain.
I
2
C serial clock
I
2
C serial data
The I
2
C bus lines can be pulled above VDD, 5.5V max
Ordering Information
PART NUMBER
(Notes
1, 2, 3)
ISL76683AROZ-T7
ISL76683AROZ-T7A
ISL76683EVAL1Z
NOTES:
1. Refer to
TB347
for details about reel specifications.
2. These 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. 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), refer to the
ISL76683
product information page. For more information about MSL, refer to
TB477.
TEMP RANGE
(°C)
-40 to +105
-40 to +105
Evaluation Board
TAPE AND REEL
(UNITS)
3k
250
PACKAGE
(RoHS Compliant)
6 Ld ODFN
6 Ld ODFN
L6.2x2.1
L6.2x2.1
PKG.
DWG. #
FN7697 Rev 9.00
Mar 2, 2018
Page 2 of 18
ISL76683
Absolute Maximum Ratings
(T
A
= +25°C)
V
DD
, Supply Voltage between VDD and GND . . . . . . . . . . . . . . . . . . . . .3.6V
I
2
C Bus Pin Voltage (SCL, SDA). . . . . . . . . . . . . . . . . . . . . . . . . -0.2V to 5.5V
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