Thermal sensor array operates at temperatures up to 125°C

February 05, 2019 //By Julien Happich
Thermal sensor array operates at temperatures up to 125°C
Melexis has released a high temperature infrared (FIR) thermal sensor array capable of operating at a temperature up to 125°C while featuring a lower thermal noise compared to the company’s current MLX90640.

The MLX90641 16x12 pixel IR array comes in an industry standard 4-lead TO39 package and is able to accurately measure temperatures in the range -40°C to +300°C, with an increased refresh rate of 64Hz. The factory-calibrated devices ensure an accuracy of 1°C in typical measurement conditions. The high accuracy is further supported by a Noise Equivalent Temperature Difference (NETD) of 0.1 K RMS. Two different field of view (FoV) options are available, a standard 55°x35° and a wide angle 110°x75°. The device is simple to use, operating from a single 3.3 V supply and storing all results in internal RAM for access via an I2C compatible digital interface. A proprietary algorithm ensures high thermal stability, even in conditions where the temperature is changing rapidly. To speed up application development, Melexis has made MCU driver software available via the github.com platform and additional software is available for the detection of people via their thermal signature. The extended temperature range opens up multiple new applications and the new MLX90641 is expected to be particularly suited to applications in the world of cooking, such as conventional and microwave ovens as well as industrial applications such as detection of power electronics overheating and automotive.

Melexis -  www.melexis.com


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