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Motion sensor boosts image stabilisation in mobile devices

Posted: 22 Sep 2015     Print Version  Bookmark and Share

Keywords:STMicroelectronics  motion sensor  smartphone  tablet  image stabilisation 

STMicroelectronics has announced what it boasts as the world's most advanced six-axis motion-sensing device fully supporting image stabilisation in smartphones, tablets and digital still cameras. The LSM6DS3H, the latest member of ST's iNEMO range of inertial motion sensors, combines a 3-axis gyroscope, a 3-axis accelerometer and an ultra-low-power processing circuit offered in a 2.5mm x 3mm x 0.83mm System-in-Package solution.

Electronic image stabilisation (EIS) and optical image stabilisation (OIS) techniques help cut image blurring caused by camera motion while the snapshot is being captured. Initially developed for professional cameras, these techniques are being increasingly deployed in smartphones and tablets, where blurring is most likely to occur when the user takes a photograph with an outstretched arm.

According to ST, the LSM6DS3H is a compact, ultra-low-power MEMS module that allows equipment manufacturers to reduce size, system complexity and cost, while extending battery life in mobile imaging applications, thanks to a power consumption of less than 1mA, compared to the 5mA required by systems that employ two single-function gyroscopes.

LSM6DS3H

The ultra-low power consumption of the motion sensors (0.85mA in normal mode, 0.4mA in low power mode) allows the gyroscope to be "always on"; while accelerometer power consumption in low-power mode is down to 10uA, 60 per cent less compared with the previous-generation 6-axis module (LSM6DS3).

The device supports an accelerometer ODR (Output Data Rate) up to 6.66kHz and gyroscope ODR up to 3.33kHz. Smart FIFO for dynamic data batching and smarter power management is at 4KB FIFO $#43; 4KB flexible (FIFO or programmable). It also supports supply voltage from 1.71V to 3.6V, independent IOs supply down to 1.62V. It also flaunts an embedded temperature sensor.

The LSM6DS3H is available in volume production at a price of $1.61 in quantities of 1ku.





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