1

Digital Red, Green and Blue Color Light Sensor with IR

Blocking Filter

ISL29125

The ISL29125 is a low power, high sensitivity, RED, GREEN and

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.

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

• 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

• 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”

FIGURE 1. TYPICAL APPLICATION DIAGRAM

FIGURE 2. NORMALIZED SPECTRAL RESPONSE FOR RED, GREEN

AND BLUE SENSING

ISL29125

MCU

SCL

SDA

4

6

1

3

5

VDD

GND

SCL

SDA

GPIO

INT

Vbus

2

NC

R2 R3 R4

VDD

R1

C1

C2

R1 – 100

R2 – 2.7k

to 10k

R3 – 2.7k

to 10k

R4 – 2.7k

to 10k

C1 – 1µF

C2 – 0.1µF

Ω

Ω

Ω

Ω

Ω

Ω

Ω

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

350 380 410 440 470 500 530 560 590 620 650 680 710 740 770 800 830

WAVELENGTH

RED

GREEN

BLUE

1931 STD RED

1931 STD GREEN

1931 STD BLUE

NORMALIZED TO GREEN

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

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.

January 24, 2014

FN8424.2