This datasheet details the ADXL312, a low-power 3-axis digital accelerometer with selectable ranges up to ±12 g, supporting SPI and I2C interfaces.
The ADXL312 is a small, thin, low-power 3-axis digital accelerometer designed for high-resolution measurements up to ±12 g. It features a selectable measurement range of ±1.5 g, ±3 g, ±6 g, or ±12 g and provides a fixed 10-bit resolution, which can increase to 13-bit resolution at the ±12 g range. The device supports both SPI (3- and 4-wire) and I2C digital interfaces and includes embedded FIFO technology to minimize host processor load. It is well-suited for applications such as car alarms, hill start aids, and data recorders.
| Measurement Range | ±1.5, 3, 6, 12 g |
|---|---|
| Operating Temperature Range | -40°C to +105°C |
| Supply Voltage Range | 2.0 V to 3.6 V |
| Supply Current (Data rate > 100 Hz) | 100 µA to 300 µA |
| Supply Current (Standby Mode) | 0.1 µA to 2 µA |
| Output Resolution | 10 to 13 bits |
| Package Type | 32-lead LFCSP |
| Shock Survival | 10,000 g |
The device supports user-selectable measurement ranges of ±1.5 g, ±3 g, ±6 g, or ±12 g.
The ADXL312 supports SPI (3- and 4-wire) and I2C digital interfaces.
The device operates over a wide temperature range from -40°C to +105°C.
The supply current is typically between 100 µA and 170 µA at a data rate greater than 100 Hz.