STMicroelectronics Launches Integrated Sensor for Altitude and Depth Measurement, Supporting Water Pressure Environments up to 110m
TECHWORLD ·
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STMicroelectronics announced the launch of LPS27DEWO, a MEMS sensor that integrates altitude measurement and depth monitoring.
The product comes in a 10-lead LGA package measuring 2.7mm x 2.7mm x 1.7mm and can be used in smartwatches, smart rings, sports cameras, and diving equipment.
LPS27DEWO supports an underwater pressure measurement range of up to 6060hPa, full-scale accuracy of ±0.5%, and I2C, SPI, and I3C interfaces with 1.7µA operating current.
STMicroelectronics (ST) has unveiled a new MEMS sensor that integrates altitude measurement and depth monitoring. ST said on the 15th that it had released the high-precision pressure sensor, LPS27DEWO. The product is designed to handle altitude and depth measurements with a single sensor and offers two full-scale options in one device.
LPS27DEWO can be used in smartwatches, smart rings, sports cameras, and diving equipment. The package measures 2.7mm wide, 2.7mm long, and 1.7mm high, and uses a 10-lead LGA footprint. ST said the product has been miniaturized so it can be built into wearables, imaging devices, diving equipment, and other products.
The product supports underwater pressure measurement ranges of up to 6060hPa. In diving environments, it provides accurate depth information even in the decompression-management zone below 40m. It is also designed to maintain robustness in environments exposed to water pressure equivalent to depths of up to 110m.
LPS27DEWO adopts a high-strength cylindrical metal lead structure. This makes it easier to integrate into a sealed design and also secures overpressure resistance. ST said the product was designed to deliver measurement accuracy and structural robustness even in deep-water pressure environments.
Wearable devices can be affected by strong external light and by the operating environment when it comes to sensor readings. In response, LPS27DEWO is designed to reduce optical interference and minimize pressure-sensing noise to improve measurement reliability. It also uses a new Black Potting Gel to prevent light-induced measurement errors.
Based on this design, LPS27DEWO supports stable altitude and depth measurement across a range of environments. Measurement accuracy is ±0.5% on a full-scale basis.
LPS27DEWO supports 1.2V I2C, SPI, and I3C digital interfaces, making it suitable for a wide range of system designs. Operating current is 1.7µA under 3.8Pa conditions. As a result, it can improve power efficiency in devices with battery-capacity and internal-space constraints, such as smart rings and smartwatches, while also simplifying circuit design.
With a single sensor, altitude and depth measurement are both possible. This is expected to reduce the burden of BOM costs by lowering the need for separate sensors.
ST said it is targeting wearables and outdoor equipment with its new product and aims to provide the elements required in those fields together. The integrated functions it offers are miniaturization, low power consumption, and high-precision pressure measurement.
Source: TECHWORLD · Park Gyu-chan
Original: https://www.epnc.co.kr/news/articleView.html?idxno=408231
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Source: TECHWORLD
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