ADXL312
Overview
The ADXL3121 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement up to ±12 g. Digital output data is formatted as 16-bit twos complement and is accessible through either a serial port interface (SPI) (3- or 4-wire) or I2C digital interface.
- Ultralow power: as low as 57 µA in measurement mode and 0.1 µA in standby mode at VS = 3.3 V (typical)
- Power consumption scales automatically with bandwidth
- User-selectable resolution
- Fixed 10-bit resolution
- Full resolution, where resolution increases with g range, up to 13-bit resolution at ±12 g (maintaining 2.9 mg/LSB scale factor in all g ranges)
- Embedded FIFO technology minimizes host processor load
- Built-in motion detection functions for activity/inactivity monitoring
- Supply and I/O voltage range: 2.0 V to 3.6 V
- SPI (3- and 4-wire) and I2C digital interfaces
- Flexible interrupt modes mappable to either interrupt pin
