Datasheet > MXA2500U

MXA2500U

更新时间： 2024-09-27 21:54:03

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
8页	322K
描述
Ultra Low Noise, 1g Dual Axis Accelerometer with Analog Outputs

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MXA2500U 数据手册

Ultra Low Noise, ±1 g Dual Axis

Accelerometer with Analog Outputs

MXA2500U

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

Sck

Internal

Temperature

Sensor

T_OUT

Oscillator

(optional)

Voltage

V_REF

Reference

CLK

Continous

Self Test

Heater

Control

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

Low Pass

X axis

A_OUTX

Filter

Factory Adjust

Offset & Gain

Custom programmable specifications

Independent axis programmability (special order)

Low Pass

Filter

Y axis

A_OUTY

2-AXIS

SENSOR

APPLICATIONS

Automotive – Vehicle Security/Active Suspension/ABS

Headlight Angle Control/Tilt Sensing

V_DD

Gnd

V_DA

Security – Gas Line/Elevator/Fatigue Sensing

Office Equipment – Computer Peripherals/PDA’s/Mouse

Smart Pens/Cell Phones

MXA2500U FUNCTIONAL BLOCK DIAGRAM

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

White Goods – Spin/Vibration Control

GENERAL DESCRIPTION

The MXA2500U provides an absolute analog output The

typical noise floor is 0.2 mg/ Hz allowing signals below

1 milli-g to be resolved at 1 Hz bandwidth. The 3dB

rolloff of the device occurs at 25 Hz but is expandable to

>160 Hz (ref. Application Note AN-00MX-003). The

MXA2500U is available in a low profile LCC surface

mount package (5 mm x 5 mm x 2 mm). It is hermetically

sealed and is operational over a -40°C to +105°C

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 on-

chip 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.

temperature range. It also contains an on-chip temperature

sensor and a bandgap voltage reference.

Due to the standard CMOS structure of the MXA2500U,

additional circuitry can easily be incorporated into custom

versions for high volume applications. Contact the factory

for more information.

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 Street, Suite 202 , North Andover, MA 01845

Tel: 978.738.0900

www.memsic.com

Fax: 978.738.0196

MEMSIC MXA2500U Rev A

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