The ADXL278 is a high precision accelerometer with ±35g/±35g, ±50g/±50g, or ±70g/±35g output full-scale ranges. It is a complete dual-axis acceleration measurement system on a single monolithic IC.
The ADXL278 is a low‑power, dual‑axis iMEMS accelerometer that provides fully differential sensor and circuitry for high resistance to EMI/RFI. It offers selectable full‑scale ranges of ±35 g, ±50 g or ±70 g/±35 g, high linearity (0.2 % of full scale) and a 2‑pole Bessel filter with a 400 Hz cutoff.
Designed for automotive applications such as vibration monitoring, vehicle collision sensing and shock detection, the device includes a comprehensive self‑test, a wide operating temperature range (‑40 °C to +105 °C) and is supplied in a 5 mm × 5 mm × 2 mm 8‑terminal ceramic LCC package.
| Full‑Scale Range | +35 g/+35 g, +50 g/+50 g, or +70 g/+35 g |
|---|---|
| Nonlinearity | 0.2 % of full scale |
| Package | 5 mm × 5 mm × 2 mm, 8‑terminal ceramic LCC |
| Resonant Frequency | 24 kHz |
| Clock Frequency Supply Response (CFSR) | 10× better than typical single‑ended |
The ADXL278 can be ordered with output full‑scale ranges of ±35 g/±35 g, ±50 g/±50 g, or ±70 g/±35 g.
Activating the self‑test digital input changes the voltage on the forcing‑cell fingers, creating an electrostatic force that moves the sensor frame and produces a measurable output change, verifying the accelerometer’s operation.