MXD7210GL datasheet(1/10 Pages) ETC | Low Cost, Low Noise +-10 g Dual Axis Accelerometer with Digital Outputs

1 page

MEMSIC MXD7210GL/HL/ML/NL

Page 1 of 10

2003.08.04

Computer Peripherals

Low Cost, Low Noise

±10 g Dual

Axis Accelerometer with Digital

Outputs

MXD7210GL/HL/ML/NL

FEATURES

Low cost

Resolution better than 1milli-g at 1Hz

Dual axis accelerometer fabricated on a monolithic

CMOS IC

On chip mixed signal processing

No moving parts; No loose particle issues

>50,000 g shock survival rating

5mm X 5mm X 2mm LCC package

2.7V to 5.25V single supply continuous operation

Compensated for Sensitivity over temperature

Ultra low initial Zero-g Offset

No adjustment needed outside

APPLICATIONS

Information Appliances

Alarms and Motion Detectors

Disk Drives

Vehicle Security

MXD7210GL/HL/ML/NL FUNCTIONAL BLOCK DIAGRAM

GENERAL DESCRIPTION

The MXD7210GL/HL/ML/NL is a low cost, dual axis

accelerometer fabricated on a standard, submicron CMOS

process. It is a complete sensing system with on-chip mixed

signal processing. The MXD7210GL/HL/ML/NL measures

acceleration with a full-scale range of

±10 g and a sensitivity

of 4%/g @5V. It can measure both dynamic acceleration

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

MXD7210GL/HL/ML/NL 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 greater than

50,000 g, leading to significantly lower failure rate and lower

loss due to handling during assembly and at customer field

application.

The MXD7210GL/HL/ML/NL provides two digital outputs

that are set to 50% duty cycle at zero g acceleration. The

outputs are digital with duty cycles (ratio of pulse width to

period) that are proportional to acceleration. The duty cycle

outputs can be directly interfaced to a microprocessor.

The typical noise floor is 0.4 mg/ Hz allowing signals

below 1milli-g to be resolved at 1 Hz bandwidth. The

MXR7210GL/HL/ML/NL is packaged in a hermetically

sealed LCC surface mount package (5 mm x 5 mm x 2 mm

height) and is operational over a 0°C to 70°C(GL/HL) or a -

°C to +85°C(ML/NL) temperature range.

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.

MEMSIC, Inc.

800 Turnpike St., Suite 202, North Andover, MA 01845

Tel: 978.738.0900

Fax: 978.738.0196

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