Ultra Low Noise, Low offset Drift

±1 g Dual

Axis Accelerometer with Digital Outputs

MXD2020E/F

FEATURES

Resolution better than 1 mg at 1 Hz

Dual axis accelerometer fabricated on a monolithic CMOS IC

RoHS compliant

On-chip mixed mode signal processing

50,000 g shock survival rating

17 Hz bandwidth

3.00V to 5.25V single supply operation

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

Continuous self-test

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/Cell Phones

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

Projectors - Leveling and Keystoning

White Goods – Spin/Vibration Control

Internal

Oscillator

Sck

(optional)

CLK

Heater

Control

X axis

Y axis

Factory Adjust

Offset & Gain

Low Pass

Filter

Low Pass

Filter

Temperature

Sensor

Voltage

Reference

V

REF

D

OUTX

V

DD

V

DA

Gnd

2-AXIS

SENSOR

D

OUTY

T

OUT

Continous

Self Test

MXD2020E/F FUNCTIONAL BLOCK DIAGRAM

GENERAL DESCRIPTION

The MXD2020E/F is an ultra low noise and low cost, dual

axis accelerometer built on a standard, submicron CMOS

process. The MXD2020E/F measures acceleration with a

full-scale range of

± 1 g and a sensitivity of 20%/g @5V at

vibration) and static acceleration (e.g., gravity). The

MXD2020E/F 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 up to 50,000 g, leading to

significantly lower failure rates and lower losses due to

handling during assembly.

The MXD2020E/F provides two digital outputs. The

outputs are digital signals with duty cycles (ratio of pulse

width to period) that are proportional to acceleration. The

duty cycles outputs can be directly interfaced to a micro-

processor.

MEMSIC MXD2020E/F Rev H

Page 1 of 8

2/26/2007

Information furnished by MEMSIC is believed to be accurate and reliable.

However, no responsibility is assumed by MEMSIC for its use, nor for any

infringements of patents or other rights of third parties, which may result from

its use. No license is granted by implication or otherwise under any patent or

patent rights of MEMSIC

below 1mg to be resolved at 1 Hz bandwidth. The

MXD2020E/F is available in a LCC surface mount package

(5mm x 5mm x 2mm height). It is hermetically sealed and

operational over a -40

°C to +105°C temperature range.

Due to the standard CMOS structure of the MXD2020E/F,

additional circuitry can easily be incorporated into custom

versions for high volume applications. Contact the factory

for more information.

©MEMSIC, Inc.

One Technology Drive Suite 325,Andover MA01810,USA

Tel: +1 978 738 0900

Fax: + 978 738 0196

www.memsic.com