MXR2312ML MEMSIC, MXR2312ML Datasheet

ACCELEROMETER, 2 AXIS, ±2G, LCC8

MXR2312ML

Manufacturer Part Number
MXR2312ML
Description
ACCELEROMETER, 2 AXIS, ±2G, LCC8
Manufacturer
MEMSIC
Datasheet

Specifications of MXR2312ML

No. Of Axes
2
Sensor Case Style
LCC
No. Of Pins
8
Supply Voltage Range
3V To 5.25V
Operating Temperature Range
-40°C To +105°C
Operating Temperature Max
105°C
Operating
RoHS Compliant
Acceleration Range
±2g
Sensitivity Per Axis
312mV / G
Rohs Compliant
Yes
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/Computer Security
Information Appliances – Computer Peripherals/PDA’s/Cell
Phones
Gaming – Joystick/RF Interface/Menu Selection/Tilt Sensing
GPS – Electronic compass tilt correction
Consumer – LCD projectors, pedometers, blood pressure
GENERAL DESCRIPTION
The MXR2312G/M 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 MXR2312G/M measures acceleration
with a full-scale range of ±2 g and a sensitivity of 312mV/g
@5V at
(e.g. vibration) and static acceleration (e.g. gravity). The
MXR2312G/M 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 MXR2312G/M Rev.G
Headlight Angle Control/Tilt Sensing
monitor, digital cameras
25°C
. It can measure both dynamic acceleration
Improved, Ultra Low Noise ±2 g
Dual Axis Accelerometer with
Ratiometric Outputs
Page 1 of 6
The MXR2312G/M provides two ratiometric analog
outputs proportional to 50% of the supply voltage at zero g
acceleration. The typical noise floor is 0.2 mg/ Hz
allowing signals below 1 mg to be resolved at 1 Hz
bandwidth. The 3dB rolloff of the device occurs at 17 Hz
but is expandable to >160 Hz (reference Application Note
AN-00MX-003). The MXR2312G/M 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
105
©MEMSIC, Inc.
800 Turnpike St., Suite 202, North Andover, MA01845, USA
Tel: +1 978 738 0900
www.memsic.com
(optional)
Sck
°C(ML) and 0°C to 70°C(GL) temperature range.
MXR2312G/M FUNCTIONAL BLOCK DIAGRAM
CLK
SENSOR
Control
2-AXIS
Heater
V
Oscillator
Internal
DD
MXR2312G/M
Y axis
X axis
Factory Adjust
Offset & Gain
Fax: +1 978 738 0196
Continous
Self Test
Gnd
Low Pass
Low Pass
Filter
Filter
Temperature
V
Reference
DA
Voltage
Sensor
2/26/2007
°C
to
T
V
A
A
OUT
REF
OUTX
OUTY

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MXR2312ML 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

... Transverse sensitivity is the algebraic sum of the alignment and the inherent sensitivity errors. 4 External circuitry is required to extend the 3dB bandwidth (ref. Application Note: AN-00MX-003) MEMSIC MXR2312G/M Rev.G Measurements @ 25°C, Acceleration = 0 g unless otherwise noted; V MXR2312G Conditions Min Typ Each Axis ±2.0 0.5 ± ...

Page 3

... V Digital Supply Voltage DD Ordering Guide Model Package Style MXR2312GL LCC8, RoHS compliant MXR2312GF LCC8, Pb-free RoHS compliant MXR2312ML LCC8, RoHS compliant MXR2312MF LCC8, Pb-free RoHS compliant All parts are shipped in tape and reel packaging. ESD (electrostatic discharge) sensitive device. Caution ...

Page 4

... MEMSIC MXR2312G/M Rev.G 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

... PCB immediately surrounding the MEMSIC device and that there is no significant heat source nearby metal ground plane should be added directly beneath For the MEMSIC device. The size of the plane should be f π similar to the MEMSIC device’s footprint and be as thick as possible. ...

Page 6

... PACKAGE DRAWING MEMSIC MXR2312G/M Rev.G Page 2/26/2007 ...

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