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ISL29043IROMZ-T7

Description
SPECIALTY ANALOG CIRCUIT
Categorysemiconductor    Analog mixed-signal IC   
File Size600KB,16 Pages
ManufacturerIntersil ( Renesas )
Websitehttp://www.intersil.com/cda/home/
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ISL29043IROMZ-T7 Overview

SPECIALTY ANALOG CIRCUIT

ISL29043IROMZ-T7 Parametric

Parameter NameAttribute value
stateACTIVE
terminal coatingNOT SPECIFIED
Analog IC other typesANALOG CIRCUIT
ESIGNS
NEW D
ED FOR MENT PART
MMEND
CO
LACE
N OT R E
ED REP A
ME N D
4
R E C OM
ISL2904
Low Power Ambient Light and Proximity Sensor with
Internal IR-LED and Digital Output
ISL29043
The ISL29043 is an integrated ambient and infrared
light-to-digital converter with a built-in IR LED and I
2
C Interface
(SMBus Compatible). This device uses two independent ADCs
for concurrently measuring ambient light and proximity in
parallel. The flexible interrupt scheme is designed for minimal
microcontroller utilization.
For ambient light sensor (ALS) data conversions, an ADC
converts photodiode current (with a light sensitivity range up to
2000 Lux) in 100ms per sample. The ADC rejects 50Hz/60Hz
flicker noise caused by artificial light sources.
For proximity sensor (Prox) data conversions, the built-in driver
turns on an internal infrared LED and the proximity sensor ADC
converts the reflected IR intensity to digital. This ADC rejects
ambient IR noise (such as sunlight) and has a 540μs
conversion time.
The ISL29043 provides low power operation of ALS and
proximity sensing with a typical 136μA normal operation
current (110μA for sensors and internal circuitry, ~28μA for
LED) with 220mA current pulses for a net 100μs, repeating
every 800ms (or under).
The ISL29043 uses both a hardware pin and software bits to
indicate an interrupt event has occurred. An ALS interrupt is
defined as a measurement that is outside a set window. A
proximity interrupt is defined as a measurement over a
threshold limit. The user may also require that both ALS/Prox
interrupts occur at once, up to 16 times in a row before
activating the interrupt pin.
The ISL29043 is designed to operate from 2.25V to 3.63V over
the -40°C to +85°C ambient temperature range. It is packaged in
a clear, lead-free 10 Ld ODFN package.
Features
• Internal LED + Sensor = Complete Solution
• Works Under All Light Sources Including Sunlight
• Dual ADCs Measure ALS/Prox Concurrently
• <1.0μA Supply Current When Powered Down
• Temperature Compensated
• Pb-Free (RoHS compliant)
Intelligent and Flexible Interrupts
• Independent ALS/Prox Interrupt Thresholds
• Adjustable Interrupt Persistency
- 1/4/8/16 Consecutive Triggers Required Before Interrupt
Applications
• Display and Keypad Dimming Adjustment and Proximity
Sensing for:
- Mobile Devices: Smart Phone, PDA, GPS
- Computing Devices: Laptop PC, Netbook, Tablet PC
- Consumer Devices: LCD-TV, Digital Picture Frame, Digital
Camera
- Industrial and Medical Light and Proximity Sensing
Related Literature
• See
AN1436,
“Proximity Sensors”
255
V
I2C
PULL-UP
I
2
C MASTER
µCONTROLLER
INT
SDA
SCL
SLAVE_1
SDA
SCL
I
2
C SLAVE_n
SDA
SCL
PROX COUNTS (8-BIT)
R1
10kΩ
V
DD
V
LED
R2
10kΩ
R3
10kΩ
204
110mA (18% GREY CARD)
153
220mA (18% GREY CARD)
110mA (WHITE COPY PAPER)
220mA (WHITE COPY PAPER)
51
0
C2
1µF
C1
1.0µF 2
ADDR0 IRDR
3
V
INT
DD
C3
4
GND SDA
0.1µF
5
REXT
SCL
ISL29043
R
EXT
499kΩ
SLAVE_0
1
LED+ LED-
10
9
8
7
6
102
0
25
50
75
100
125
150
DISTANCE (mm)
FIGURE 1. TYPICAL APPLICATION DIAGRAM
FIGURE 2. PROXIMITY RESPONSE vs DISTANCE
April 28, 2016
FN7935.2
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|
Copyright Intersil Americas LLC. 2012, 2016. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

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state ACTIVE ACTIVE
terminal coating NOT SPECIFIED NOT SPECIFIED
Analog IC other types ANALOG CIRCUIT ANALOG CIRCUIT
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