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