ISL29044 Datasheet, PDF (2/2 Pages) Intersil Corporation – Low Power Ambient Light and Proximity Sensor with Internal IR-LED and Digital Output

ISL29044 Block Diagram
ALS PHOTODIODE
ARRAY
ISL29044
VDD
1
LIGHT DATA
PROCESS
ALS AND IR
IR PHOTODIODE
ARRAY
IREF
FOSC
DUAL CHANNEL
ADCs
3
GND
4
LED+
5
LED-
COMMAND
REGISTER
DATA
REGISTER
I²C
INTERRUPT
IR DRIVER
2 SCL
8 ^SDA
7 INT
6 IRDR
Pin Configuration
ISL29044
(8 LD 2.36X3.94 (mm) OPTICAL CO-PACKAGE)
TOP VIEW
LED- 5
IRDR 6
INT 7
SDA 8
4 LED+
3 GND
2 ^SCL
1 VDD
Pin Descriptions
PIN# PIN NAME
DESCRIPTIONS
1
VDD Voltage supply 2.25V to 3.63V.
2
SCL I²C clock line can be pulled from 1.7V to above V_DD,
3.63V max.
3
GND Ground
4
LED+ Anode of IR LED
5
LED- Cathode of IR LED
6
IRDR IR-LED driver pin - current flows into ISL29044 from
LED cathode.
7
INT Interrupt pin; Logic output (open-drain) for interrupt.
8
SDA I²C data line can be pulled from 1.7V to above V_DD,
3.63V max.
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2
FN8305.0
October 30, 2012