Ambient light sensor reference design integrates IO-Link protocol

February 25, 2014 // By Graham Prophet
Simplifing high-accuracy industrial sensing, the Santa Cruz (MAXREFDES23#) ambient light sensor (ALS) from Maxim Integrated monitors multiple red, green, blue (RGB) and infrared (IR) ambient light sensors.

The Santa Cruz ALS reference system provides a wide, dynamic range of clear, RGB, and IR light, and temperature data. Santa Cruz is tuned to the response of the human eye for accurate system function relative to visible light. In addition, has high light sensitivity and low latency. The integrated IO-Link software and device stack automatically configure the sensor without additional programming, saving valuable time and resources. Additionally, Santa Cruz fits on a 6.5 x 25 mm printed circuit board (PCB), making it the industry's smallest ALS system.

It ntegrates six highly accurate clear light, RGB and IR sensors; a temperature sensor; an economical and ultra-low-power microcontroller; dual integrated 3.3V and 5V linear regulators; programmable flash memory; and IO-Link software. High sensitivity spans a range of 57,542 lux to 0.001 lux, at low power. Ease of configuration is assisted by IO-Link, which allows simple identification and connection to existing industrial systems.

“The Santa Cruz system is a result of Maxim's partnership with Renesas Electronics Europe and TMG Technologie und Engineering,” said David Andeen, Reference Design Manager at Maxim Integrated. “The Renesas RL78 ultra-low-power microcontroller and TMG's IO-Link software complement Maxim's accurate light sensor and IO-Link modem. The combination of these products with our IO-Link modem creates a platform for a variety of IO-Link sensor solutions.”

The Santa Cruz system is available on a 6.5 x 25 mm printed circuit board with M12 connector for immediate IO-Link connectivity, at $99.

Maxim Integrated;