iNEMO Inertial Module: 3D Accelerometer and 3D Gyroscope

The LSM6DS3 is a system-in-package featuring a 3D digital accelerometer and a 3D digital gyroscope performing at 1.25 mA (up to 1.6 kHz ODR) in high-performance mode and enabling always-on low-power features for an optimal motion experience for the consumer. The LSM6DS3 supports main OS requirements, offering real, virtual and batch sensors with 8 kbyte for dynamic data batching. LSM6DS3 has a full-scale acceleration range of ±2/±4/±8/±16 g and an angular rate range of ±125/±245/±500/±1000/±2000 dps.

The tiny (2.5 mm x 3.0 mm x 0.8 mm), iNEMO Ultra 6-axis inertial-sensor combo (3-axis accelerometer/3-axis gyroscope) delivers industry-leading noise performance while effectively managing system power with state-of-the-art technology that in testing has proven to be typically 20% more energy-efficient than the best alternative combos in low-power mode while delivering outstanding performance and protecting valuable board real estate.

Flexible FIFO memory allows the LSM6DS3 to save and batch more data before waking up the system processor, saving overall system power, too. Moreover, ST has leveraged its robust and mature manufacturing processes for the production of its industry-leading micro-machined accelerometers and gyroscopes, while manufacturing its IC interfaces using CMOS technology. This choice supports trimming of dedicated circuits to better match sensing-element characteristics.

The LSM6DS3's event-detection interrupts enable efficient and reliable motion tracking and context awareness that is implemented in hardware. This allows for recognition of free-fall events, 6D orientation, tap and double-tap sensing, activity or inactivity, and wake-up events. With ST's experience in supporting the requirements of the main operating systems, the LSM6DS3 will be able to efficiently process real, virtual, and batch-mode sensors, saving power and enabling faster system reaction time. Indeed, the new combo is designed to implement in hardware Significant Motion, Tilt, Pedometer Functions, and Time Stamp, and to support the data acquisition of an external magnetometer with both hard and soft iron correction.

• Power consumption: 0.9 mA in combo normal mode and 1.25 mA in combo high-performance mode up to 1.6 kHz.
• “Always on” experience with low power consumption for both accelerometer and gyroscope
• Smart FIFO up to 8 kbyte based on features set
• Compliant with Android K and L
• Hard, soft ironing for external magnetic sensor corrections
• ±2/±4/±8/±16 g full scale
• ±125/±245/±500/±1000/±2000 dps full scale
• Analog supply voltage: 1.71 V to 3.6 V
• Independent IOs supply (1.62 V)
• Compact footprint, 2.5 mm x 3 mm x 0.83 mm
• SPI/I²C serial interface with main processor data synchronization feature
• Embedded temperature sensor
• ECOPACK^®, RoHS and “Green” compliant