ISL29125_14 Datasheet, PDF (1/17 Pages) Intersil Corporation – Digital Red, Green and Blue Color Light Sensor with IR Blocking Filter

Digital Red, Green and Blue Color Light Sensor with IR
Blocking Filter
ISL29125
The ISL29125 is a low power, high sensitivity, RED, GREEN and
BLUE color light sensor (RGB) with an I²C (SMBus compatible)
interface. Its state-of-the-art photodiode array provides an
accurate RGB spectral response and excellent light source to
light source variation (LS2LS). The ISL29125 is designed to
reject IR in light sources allowing the device to operate in
environments from sunlight to dark rooms. The integrating
ADC rejects 50Hz and 60Hz flicker caused by artificial light
sources. A selectable range allows the user to optimize
sensitivity suitable for the specific application. In normal
operation mode the device consumes 56µA, which reduces to
0.5µA in power-down mode. The ISL29125 supports hardware
and software user programmable interrupt thresholds. The
Interrupt persistency feature reduces false trigger notification.
The device operates on supplies (VDD) from 2.25V to 3.63V, I²C
supply from 1.7V to 3.63V, and operating temperature over the
-40°C to +85°C.
Features
• 56µA operating current, 0.5µA shutdown current
• Selectable range (Via I²C)
• I²C (SMBus compatible) output
• ADC resolution 16 bits
• Programmable interrupt windows
• Two optical sensitivity ranges
- Range 0 = 5.7m lux to 375 lux
- Range 1 = 0.152 lux to 10,000 lux
• Operating power supply 2.25 to 3.63V
• I²C power supply 1.7V to 3.63V
• 6 Ld ODFN (1.65x1.65x0.7mm) package
Applications
• Smart phone, PDA, GPS, tablet PCs, LCD-TVs, digital picture
frames, digital cameras
• Dynamic display color balancing
• Printer color enhancement
• Industrial/commercial LED lighting color management
• Ambient light color detection/correction
• OLED display aging compensation
Related Literature
AN1914, “Evaluation Hardware/Software User Manual for RGB
Sensor”
Vbus
C1 C2
R1
VDD
SDA
R2 R3 R4
4 SDA
1
VDD
MCU ^SCL
6 SCL ISL29125 _NC 2
GPIO
5 INT
R1 – 100 Ω
R2 – 2.7kΩ to 10kΩ
R3 – 2.7k Ω to 10kΩ
R4 – 2.7k Ω to 10kΩ
C1 – 1µF
C2 – 0.1µF
GND
3
FIGURE 1. TYPICAL APPLICATION DIAGRAM
2.0
1.8
NORMALIZED TO GREEN
1.6
1.4
RED
1.2
GREEN
BLUE
1.0
1931 STD RED
0.8
1931 STD GREEN
0.6
1931 STD BLUE
0.4
0.2
0.0
350 380 410 440 470 500 530 560 590 620 650 680 710 740 770 800 830
WAVELENGTH
FIGURE 2. NORMALIZED SPECTRAL RESPONSE FOR RED, GREEN
AND BLUE SENSING
January 24, 2014
1
FN8424.2
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 2013, 2014. 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.