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Medical grade version of MLX90632 opens up a world of new applications

Melexis has unveiled a medical grade FIR sensor, assembled in a surface mount package for use in a variety of applications, including wearables and, in particular, advanced in-ear-devices (so-called hearables) and clinical point-of-care applications that require accurate temperature measurement.

The MLX90632 is based upon Melexis' established far infrared (FIR) technology that utilises the fact that all objects emit heat radiation.

Miniaturised far-infrared sensors tend to be sensitive to thermal disturbances, however, the MLX90632 mitigates this effect through sophisticated compensation algorithms; delivering high levels of thermal stability. The medical-grade MLX90632 has been optimised for the normal human body temperature range, where it offers medical-grade accuracy of ±0.2°C thanks to advanced in-factory calibration procedures.

The ultra-small device is a complete solution in a 3x3x1mm QFN package which includes the sensor element, signal processing, digital interface and optics thereby allowing rapid and simple integration into a wide variety of space constrained modern applications.

The small size, high thermal stability and optimisation for human body temperature make the MLX90632 suitable for ultra-small modern health monitoring devices, such as portable diagnosis tools capable of monitoring body temperature continuously. Monitoring vital signs repeatedly is a key enabler of preventive medicine practices to detect early critical health conditions.

The sensor is also highly suited for more classic medical devices such as forehead or ear body thermometers.

Neil Tyler

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