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Silicon Labs Launches UV Detection, Proximity Sensors

Silicon Labs has released next-generation optical sensors that are suited for UV light detection as well as high-performance proximity sensing and gesture recognition.

The Si1133 for UV detection and measurement can be incorporated easily and economically into a wide range of cost-sensitive outdoor recreation products such as sports and fitness wearables, backpacks, bicycle helmets, sunglasses, beach/patio furniture and sun lotion packaging, the company states. It includes:

  • UV measurement accuracy of ±1.5 on the UV scale
  • Ambient light sensing supporting < 100 mlx resolution and operation under dark glass
  • On-chip dual 23-bit ADCs, DSP and high-sensitivity visible light, UV and infrared (IR) photodiodes
  • I2C serial communications with up to 3.4Mbps data rate
  • Ultra-low power: 500 nA standby current
  • 2x2mm QFN package

The Si1153 has improvements for proximity sensing and gesture recognition, according to Silicon Labs. These new sensors can be used outdoors in high ambient light and over an extended range of up to 2 meters. The Si1153 sensors are ideal for gesture-based operation of automotive infotainment systems, bicycle computers and other outdoor sports equipment. Its main features are:

  • Proximity detection adjustable from under 1cm up to 200cm
  • Up to 3 independent LED drivers supporting multi-axis proximity motion detection
  • I2C serial communications with up to 3.4Mbps data rate
  • Ultra-low power: 500 nA standby current
  • Two package options: 2×2 mm QFN and 2.9x 4.9mm module with LED

“Continual advances in optical sensing hold the key to product design innovations that enhance consumer health, safety and convenience,” said Daniel Cooley, vice president of Marketing for Silicon Labs’ IoT products. “Our next-generation Si1133 and Si1153 sensors provide developers with state-of-the-art technology that makes it easy and cost-effective to add accurate UV index measurement and high-performance proximity sensing and gesture detection to a wide array of consumer, automotive and commercial applications.”

For more information, visit Silicon Labs.

Sources: Press materials received from the company and additional information gleaned from the company’s website.

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