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Wearable Electronics


Melexis announces world's smallest medical grade FIR sensor M


elexis, a microelectronics engineering company, announces the world's smallest 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 where highly accurate human body temperature measurement is required. The MLX90632 is based upon Melexis' established far infrared (FIR) technology that uses the fact that all objects emit heat radiation. Miniaturised far-infrared sensors are typically sensitive to thermal disturbances, however, the MLX90632


mitigates this effect through sophisticated compensation algorithms; delivering high levels of thermal stability. The new medical- grade MLX90632 is 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 medical MLX90632 ideal 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.


Commenting on the new product release Joris Roels, marketing manager Temperature Sensors says: “Melexis has already shipped millions of medical grade sensing devices


ams demonstrates new optical sensor technologies


Industry-first use cases in automotive, medical, consumer and industrial applications


a


ms, supplier of high performance sensor solutions, showcased innovative optical sensing


technologies which are transforming personal health monitoring, the mobile phone, automotive evolution, and smart agriculture at the Sensors Expo 2019. Breakthroughs from ams, such as the development of nanoscale optical filters and new miniature, best-in-class efficiency power laser emitters, are creating new markets and opening up fresh opportunities to deploy optical sensors across the automotive, medical, consumer and industrial sectors. The exciting optical sensor


demonstrations at Sensors Expo included highly advanced 3D sensor technology for smartphones, computing, automotive and robotics; medical-grade wearable devices


that monitor blood pressure; and spectral sensors for maximising yields in smart horticulture. Sensors Expo visitors discovered how ams has been advancing industry-leading spectral sensing technology for tomorrow’s industrial and consumer applications: from water monitoring, to control washing machine cycles, to advanced analysis of materials using infrared light. “We are driving innovation to create


differentiated solutions for our customers,” says Alexander Everke, CEO at ams. “ams has the unique technology and expertise to create complete reference designs from face recognition to a wearable blood pressure monitor to a plant-yield maximiser.”


The sensors on display for use in wearable electronics are as follows.


Medical and industrial optical sensing • VivaVita reference design: A wearable device for 24/7 vital sign sensing, including a blood pressure monitoring solution with US FDA approval expected in fall 2019. • A complete 18-channel spectral sensing module which enables growers to precisely tune the color output from LEDs to maximise yield of any given plant type. • Spectral Sensor for pantone and color detection: Based on the AS7341 spectral sensor, it can be used to measure skin tone or the color of fabrics, and can be embedded in a compact, mobile module. A solution for industry and consumers, for example online shopping for colour-critical products such as cosmetics and furnishings.


• Laboratory-grade skin color sensor AS7341: A miniature spectral sensor chip that brings laboratory-grade multi-channel colour analysis capability to portable and mobile devices in action. • IR spectrometer: IRS/Admire IR


spectrometer for consumer applications • Aqua Sensor: With the AquaSensor ams will demonstrate how a light source and the AS7261 uses advanced nano-optic tri-stimulus filters to speed development of fluid monitoring applications including turbidity, bio-film and precision colourisation detection.


Audio sensing in wireless earbuds • Digital augmented hearing: Tuning out noise while tuning in speech and music in any environment on first to market loose- and closed fit earbuds.


• POW:COM: Dual pin charging and communication. Form factor demo of wireless earbud boards connected to a charging cradle. Android phone showing battery level and BT communication status.


ams.com


and this new device builds upon this expertise. The MLX90632 will be a disruptive sensing technology in many applications, allowing leading manufacturers to differentiate their devices and offer important health-related functionalities.”


melexis.com/en


20 July-August 2019


Components in Electronics


www.cieonline.co.uk


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