ISL29033IROZ-T7 Datasheet, PDF (1/15 Pages) Intersil Corporation – Ultra-Low Lux, Low Power, Integrated Digital Ambient Light Sensor with Interrupt Function

Ultra-Low Lux, Low Power, Integrated Digital Ambient
Light Sensor with Interrupt Function
ISL29033
The ISL29033 is an integrated ambient and infrared light to
digital converter with I²C (SMBus Compatible) interface. Its
advanced, self-calibrated photodiode array emulates human
eye response with excellent IR rejection. The on-chip 16-bit
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.
Power consumption can be reduced to less than 0.3µA when
powered down.
The ISL29033 supports a software and hardware interrupt that
remains asserted until the host clears it through the I²C
interface. The function of ADC conversion continues without
stopping after interrupt is asserted.
Designed to operate on supplies from 2.25V to 3.63V with an
I²C supply from 1.7V to 3.63V, the ISL29033 is specified for
operation over the -40°C to +85°C ambient temperature
range.
Related Literature
• See AN1422 “Light Sensor Applications”
Features
• Ambient light sensing
• Simple output code directly proportional to Lux
• Variable conversion resolution up to 16 bits
• Adjustable sensitivity up to 520 counts per Lux
• Measurement range: 0.0019 to 8,000lux with four
selectable ranges
• Program interrupt feature
• Light sensor close to human eye response
- Excellent light sensor IR and UV rejection
• 75μA max operating current
- 0.3μA max shutdown current
• 6 Ld 2.0mmx2.1mmx0.7mm ODFN package
Applications
• Display and keypad dimming adjustment for:
- Mobile devices: smart phone, PDA, GPS
- Computing devices: notebook PC, webpad
- Consumer devices: LCD-TV, digital picture frame, digital
camera
• Industrial and medical light sensing
VDD
1
PHOTODIODE
ARRAY
LIGHT
DATA
PROCESS
IREF
f_OSC
INTEGRATION
ADC
COMMAND
REGISTER
DATA
REGISTER
I²C/SMBus
INTERRUPT
REGISTER
5 SCL
6 SDA
3
2
4
REXT
GND
INT
FIGURE 1. BLOCK DIAGRAM
February 25, 2013
FN7656.2
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 2011, 2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. I²C Bus is a registered trademark
owned by NXP Semiconductors Netherlands, B.V. All other trademarks mentioned are the property of their respective owners.