[MEMSC]

GENERAL DESCRIPTION

The MXA2500U is an ultra low noise and low cost, dual axis accelerometer fabricated on a standard, submicron CMOS process. It is a complete sensing system with onchip mixed mode signal processing. The MXA2500U measures acceleration with a full-scale range of ±1 g and a sensitivity of 500mV/g at 25°C. (The MEMSIC accelerometer product line extends from ±1 g to ±10 g with custom versions available above ±10 g.) It can measure both dynamic acceleration (e.g., vibration) and static acceleration (e.g., gravity). The MXA2500U design is based on heat convection and requires no solid proof mass. This eliminates stiction and particle problems associated with competitive devices and provides shock survival of 50,000 g, leading to significantly lower failure rates and lower loss due to handling during assembly.

FEATURES

Better than 1 milli-g resolution

Dual axis accelerometer fabricated on a monolithic CMOS IC

On-chip mixed mode signal processing

No moving parts

50,000 g shock survival rating

25 Hz bandwidth expandable to >160 Hz

2.70V to 5.25V single supply continuous operation

Small (5mm x 5mm x 2mm) surface mount package

Continuous self test

Custom programmable specifications

Independent axis programmability (special order)

APPLICATIONS

Automotive – Vehicle Security/Active Suspension/ABS Headlight Angle Control/Tilt Sensing

Security – Gas Line/Elevator/Fatigue Sensing

Office Equipment – Computer Peripherals/PDA’s/Mouse Smart Pens/Cell Phones

Gaming – Joystick/RF Interface/Menu Selection/Tilt Sensing

White Goods – Spin/Vibration Control