6-axis MEMS gyro/accelerometer for gesture sensing/image stabilisation
In ST’s iNEMOTM range of inertial motion sensors, the LSM6DS3H combines a 3-axis gyroscope, a 3-axis accelerometer, and an ultra-low-power processing circuit in a System-in-Package solution for lowest power consumption and smallest package size.
Electronic Image Stabilisation (EIS) and Optical Image Stabilisation (OIS) techniques help minimise 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.
The LSM6DS3H builds on ST’s expertise in designing high-end gyroscopes for OIS and the company’s role in providing dual-core gyroscopes capable of simultaneously handling both user motion and gesture recognition and camera image stabilisation. The MEMS module allows equipment manufacturers to minimise size, system complexity, and cost, with power consumption of less than 1 mA, compared to the 5 mA required by systems that employ two single-function gyroscopes.
next page; feature set
Features of the LSM6DS3H include:
– Ultra-low power consumption of the motion sensors (0.85 mA in normal mode, 0.4 mA in low power mode), allowing the gyroscope to be "always on";
– Accelerometer power consumption in low-power mode down to 10 µA, 60% less compared with the previous-generation 6-axis module (LSM6DS3);
– Supports both EIS and OIS applications with a choice of I²C or SPI for the primary interface and a dedicated auxiliary SPI interface to the camera module;
– Compact package measuring 2.5 x 3 x 0.83 mm;
– Accelerometer ODR (Output Data Rate) up to 6.66 kHz, Gyroscope ODR up to 3.33 kHz;
– Smart FIFO for dynamic data batching and smarter power management: 4 kByte FIFO + 4 kByte flexible (FIFO or programmable);
– Full-scale acceleration range ± 2 / ±4 / ±8 / ±16g;
– Full-scale angular rate range ±125 / ±245 / ±500 / ±1000 / ±2000 dps;
– Supply voltage from 1.71 to 3.6V, independent IOs supply down to 1.62V;
– SPI/I²C serial interface data synchronisation feature;
– Embedded temperature sensor.
The LSM6DS3H costs $1.61 (1000).
ST; www.st.com
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