MXD2020ML MEMSIC, MXD2020ML Datasheet

MXD2020ML

Manufacturer Part Number

MXD2020ML

Description

ACCELEROMETER, 2 AXIS, ±1.7G, LCC8

Manufacturer

MEMSIC

Datasheet

1.MXD2020ML.pdf (7 pages)

Specifications of MXD2020ML

Acceleration Range

Â±1.7g

No. Of Axes

Sensor Case Style

LCC

No. Of Pins

Supply Voltage Range

3V To 5.25V

Operating Temperature Range

-40Â°C To +105Â°C

Operating Temperature Max

105Â°C

Sensitivity Per Axis

20% Duty Cycle / G

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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FEATURES

Resolution better than 1 mg

Dual axis accelerometer fabricated on a monolithic CMOS IC

RoHS compliant

On chip mixed mode signal processing

No moving parts

50,000 g shock survival rating

17 Hz bandwidth expandable to >160 Hz

3.0V to 5.25V single supply continuous operation

Continuous self test

Independent axis programmability (special order)

Ultra low initial Zero-g Offset

APPLICATIONS

Automotive – Vehicle Security/Vehicle stability control/

Security – Gas Line/Elevator/Fatigue Sensing

Information Appliances – Computer Peripherals/PDA’s/Cell

Phones

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

GPS

Consumer – LCD projectors, pedometers, blood pressure

GENERAL DESCRIPTION

The MXD2020G/H/M/N is a 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 MXD2020G/H/M/N

measures acceleration with a full-scale range of ±1.7 g and

a sensitivity of 20%/g @5V at 25

dynamic acceleration (e.g. vibration) and static acceleration

(e.g. gravity).

The MXD2020G/H/M/N 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 rate and lower loss

due to handling during assembly.

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 MXD2020G/H/M/N Rev.G

Headlight Angle Control/Tilt Sensing

–

electronic Compass tilt Correction

Monitor, digital cameras

°C

. It can measure both

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Improved, Ultra Low Noise

±1.7 g Dual Axis Accelerometer

with Digital Outputs

The MXD2020G/H/M/N 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 micro-

processor.

The typical noise floor is 0.2 mg/ Hz allowing signals

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

MXD2020G/H/M/N is packaged in a hermetically sealed

LCC surface mount package (5 mm x 5 mm x 2 mm height)

and is operational over a -40

70°C(G/H) temperature range.

©MEMSIC, Inc.

800 Turnpike St., Suite 202, North Andover, MA01845, USA

Tel: +1 978 738 0900

www.memsic.com

(optional)

MXD2020G/H/M/N FUNCTIONAL BLOCK DIAGRAM

Sck

CLK

SENSOR

Control

2-AXIS

Heater

Oscillator

Internal

Y axis

X axis

MXD2020M/N

Factory Adjust

MXD2020G/H

Offset & Gain

Fax: +1 978 738 0196

Continous

Self Test

°C

Gnd

to 105

Low Pass

Filter

Temperature

°C(M/N) and 0°C to

Reference

Voltage

Sensor

2/26/2007

OUT

REF

OUTX

OUTY

Related parts for MXD2020ML

MXD2020ML Summary of contents

Page 1

... 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 ...

Page 2

... Guaranteed by measurement of initial offset and sensitivity. 2 Alignment error is specified as the angle between the true and indicated axis of sensitivity. 3 Transverse sensitivity is the algebraic sum of the alignment and the inherent sensitivity errors. MEMSIC MXD2020G/M/N/H Rev.G Measurements @ 25°C, Acceleration = 0 g unless otherwise noted; V MXD2020G/H Conditions Min Typ Each Axis ± ...

Page 3

... LCC8 MXD2020GL RoHS compliant LCC8, Pb-free MXD2020GF LCC8 MXD2020HL RoHS compliant LCC8, Pb-free MXD2020HF LCC8 MXD2020ML RoHS compliant LCC8, Pb-free MXD2020MF LCC8 MXD2020NL RoHS compliant LCC8, Pb-free MXD2020NF All parts are shipped in tape and reel packaging. ESD (electrostatic discharge) sensitive device. ...

Page 4

... A MEMSIC accelerometer is most sensitive to changes in position, or tilt, when the accelerometer’s sensitive axis is perpendicular to the force of gravity, or parallel to the Earth’s surface. Similarly, when the accelerometer’s axis is . parallel to the force of gravity (perpendicular to the Earth’ ...

Page 5

... Hz 2.5ms period (400Hz). T1 Length of the “on” portion of the cycle. T2 (Period) Length of the total cycle. Duty Cycle Ratio of the “0n” time (T1) of the cycle to the total cycle (T2). Defined as T1/T2. MEMSIC MXD2020G/M/N/H Rev.G Pulse width ( ( * ) . Bandwidth Hz ...

Page 6

... MEMSIC device and that there is no significant heat source nearby metal ground plane should be added directly beneath the MEMSIC device. The size of the plane should be similar to the MEMSIC device’s footprint and be as thick as possible. 6. Vias can be added symmetrically around the ground plane ...

Page 7

... MEMSIC MXD2020G/M/N/H Rev.G LCC-8 PACKAGE DRAWING Fig 5: Hermetically Sealed Package Outline Page 2/26/2007 ...

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