Vishay VEML3328 and VEML3328SL I2C interface

VEML3328 (top view) and VEML3328SL (side view) can sense red, green, blue, clear, and IR light by incorporating photodiodes, amplifiers, and analog/digital circuits into a single CMOS chip. With this sensors, the brightness and color temperature of a display backlight can be adjusted based on the ambient light source, and it can differentiate indoor from outdoor lighting environments

Key features

• Integrated modules: color sensor and signal conditioning IC
• Patented Filtron(TM) Technology
• 16-bit resolution for each channel (R, G, B, C, and IR)
• Supports low transmittance (dark) lens design

Additional features

• Package type: surface-mount
• Dimensions for side view (L x W x H in mm): 2.95 x 1.50 x 1.50
• Dimensions for side view (L x W x H in mm): 2.0 x 1.25 x 1.0
• Integrated modules: color sensor and signal conditioning IC
• Supports low transmittance (dark) lens design
• Provides 16-bit resolution for each channel (R, G, B, C, and IR)
• Package: OPLGA4
• Temperature compensation: -40 °C to +85 °C
• Low power consumption I2C (SMBus compatible) interface
• Floor life: 168 h, MSL 3, according to J-STD-020
• Output type: I2C bus
• Operation voltage: 2.6 V to 3.6 V

Applications

• White balancing & color cast correction in dig. cameras
• Automatic LCD backlight adjustment
• On / off light switching in industrial and consumer appl.
• Monitoring of LED color output for IoT & smart lighting
• True color and ideal brightness levels on handheld displays
• Users move between indoor and outdoor environments

Additional Info

Vishay Intertechnology, Inc. (NYSE: VSH) broadened its optoelectronics portfolio with new RGBC-IR sensors for applications such as automatic white balancing and color cast correction in digital cameras; automatic LCD backlight adjustment; and active monitoring of LED color output for IoT and smart lighting. The new VEML3328 (top-looking) and VEML3328SL (side-looking) sensors offer better linearity and higher sensitivity compared to previous generation devices, as well as new features including an infrared (IR) channel.

The sensors released sense red, green, blue, clear, and IR light by incorporating photodiodes, amplifiers, and analog/digital circuits into a single CMOS chip. With the ability to calculate color temperature and sense ambient light, the devices offer a compact solution for adjusting backlighting in consumer electronics and notebook computers. They can also help to differentiate indoor from outdoor lighting environments to ensure that displays maintain consistent true color and ideal brightness levels based on the current environment lighting conditions.

In addition to a digital camera and TV applications, the VEML3328 and VEML3328SL will also be used in various industrial and consumer applications where their excellent temperature compensation capability will keep the sensors’ output stable under changing temperatures.

The sensors’ built-in ambient light photo-diode offers extremely high sensitivity, allowing the devices to operate in applications with dark lens designs. A programmable analog gain and integration time function, as well as the additional IR channel, allow designers to tailor the VEML3328 and VEML3328SL to their applications.

The sensors’ functions are easily operated via the simple and power-efficient I2C (SMBus compatible) interface protocol. The devices feature a low operating voltage range of 2.6 V to 3.6 V to help prolong battery life in handheld and portable systems.

Avaiable tools

3D Model and Demo Board:

• https://www.vishay.com/ppg?80012&designtools-ppg