FXOS8700CQR1

Description

The FXOS8700CQ is a low-power, 3-axis linear accelerometer and 3-axis magnetometer in a single device. The device has an I2C or point-to-point SPI serial interface, 14-bit accelerometer and 16-bit magnetometer ADC resolution, and smart-embedded functionalities. The FXOS8700CQ features a fixed magnetic measuring range of 1200 T and dynamically configurable acceleration full-scale ranges of 2 g/4 g/8 g. The user can set output data rates (ODR) ranging from 1.563 Hz to 800 Hz for each sensor. At ODR frequencies of up to 400 Hz, interleaved magnetic and acceleration data is provided. The FXOS8700CQ is available in a plastic QFN packaging and is guaranteed to perform within a temperature range of –40 °C to +85 °C.

Features

• Complete 6-axis, e-compass hardware solution
• 1.95 V to 3.6 V VDD supply voltage, 1.62 V to 3.6 V VDDIO voltage
• ±2 g/±4 g/±8 g dynamically selectable acceleration full-scale range
• ±1200 µT magnetic sensor full-scale range
• Output data rates (ODR) from 1.563 Hz to 800 Hz for each sensor, and up to 400 Hz when operated in hybrid mode with both sensors active
• Low noise: < 126 μg/√Hz acceleration noise density at 200-Hz bandwidth, < 100 nT/√Hz magnetic noise density at 100-Hz bandwidth
• 14-bit ADC resolution for acceleration measurements
• 16-bit ADC resolution for magnetic measurements
• Low power: 240 μA current consumption at 100 Hz, and 80 μA at 25 Hz with both sensors active
• Embedded programmable acceleration event functions
• Freefall and motion detection
• Transient detection
• Vector-magnitude change detection
• Pulse and tap detection (single and double)
• Orientation detection (portrait/landscape)
• Embedded programmable magnetic event functions
• Threshold detection
• Vector-magnitude change detection
• Autonomous magnetic min/max detection
• Autonomous hard-iron calibration
• Programmable automatic ODR change using auto-wake and return-to-sleep functions to save power. This function works with both magnetic and acceleration event interrupt sources.
• 32-sample FIFO for acceleration data only
• Integrated accelerometer self-test function

Applications

• Security: motion detection, door opening, smart home applications, robotics, and unmanned aerial vehicles (UAVs) with electronic compass (e-compass) function.
• Medical applications: patient monitoring, fall detection, and rehabilitation
• E-compass in mobile devices, tablets, and personal navigation devices
• User interface (menu scrolling by orientation change, tap detection for button replacement)
• Orientation detection (portrait/landscape: up/down, left/right, back/front orientation identification)
• Augmented reality (AR), gaming, and real-time activity analysis (pedometry, freefall, and drop detection for hard disk drives and other devices)
• Power management for mobile devices using inertial and magnetic event detection
• Wearable devices: motion detection, activity monitoring, sports monitoring, context awareness, and shock and vibration monitoring (mechatronic compensation, shipping, and warranty usage logging)