Inertia sensor ICs combine a number of sensors into one package to more accurately measure changes in velocity and orientation. Also known as measuring six degrees of freedom due to measuring both rotating and acceleration and can be used for dead reckoning and other positional calculations. They may also include accelerometers, gyroscopes, magnetometers, temperature sensors and inclinometers to compensate for drift.
Feature
- Accelerometer, temperature sensor, and provision for third analog sensor input
- All sensors sampled synchronouslyUp to 400 Hz ODRSamples can be synchronized to external trigger
- Ultralow power1.95 μA at 100 Hz ODR, 2.0 V supply, all sensors on270 nA at 6 Hz motion activated wake-up mode10 nA standby current
- 12-bit resolution for all sensorsAcceleration scale factor down to 1 mg/LSB Temperature scale factor: 0.065°C/LSB (typical)
- Built-in features for motion-based system level power savingsAdjustable threshold sleep/wake modes for motion activation
- Autonomous interrupt processing, without need for microcontroller intervention, to allow the rest of the system to be turned off completely
- Deep embedded FIFO minimizes host processor loadAwake state output enables implementation of standalone, motion activated switch
- Wide supply and I/O voltage ranges: 1.6 V to 3.5 VOperates off 1.8 V to 3.3 V railsPower can be derived from coin cell battery
- SPI digital interface
- Small and thin 3 mm × 3.25 mm × 1.06 mm package
Applications
- Home healthcare devices
- Wireless sensors
- Motion enabled metering devices
(Picture: Pinout)
