GENERAL DESCRIPTION

The ADXL278 is a low power, complete, dual-axis accelerometer with signal conditioned voltage outputs that are on a single monolithic IC. This product measures acceleration with a full-scale range of (X-axis/Y-axis) ±35 g/±35 g, ±50 g/±50 g, or ±70 g/±35 g (minimum). The ADXL278 can also measure both dynamic acceleration (vibration) and static acceleration (gravity).

The ADXL278 is the fourth-generation surface micromachined iMEMS® accelerometer from ADI with enhanced performance and lower cost. Designed for use in front and side impact airbag applications, this product also provides a complete cost effective solution useful for a wide variety of other applications.

FEATURES

  Complete dual-axis acceleration measurement system on a single monolithic IC

  Available in ±35 g/±35 g, ±50 g/±50 g, or ±70 g/±35 g output full-scale ranges

  Full differential sensor and circuitry for high resistance to EMI/RFI

  Environmentally robust packaging

  Complete mechanical and electrical self-test on digital command

  Output ratiometric to supply

  Sensitive axes in the plane of the chip

  High linearity (0.2% of full scale)

  Frequency response down to dc

  Low noise

  Low power consumption

  Tight sensitivity tolerance and 0 g offset capability

  Largest available prefilter clipping headroom

  400 Hz, 2-pole Bessel filter

  Single-supply operation

  Compatible with Sn/Pb and Pb-free solder processes

APPLICATIONS

  Vibration monitoring and control

  Vehicle collision sensing

  Shock detection