MEMSIC MXR9500G/M Rev.D Page 1 of 8 2/27/2007
Low Cost
±1.5 g Tri Axis Accelerometer with
Ratiometric Outputs
MXR9500G/M
FEATURES
Low cost
RoHS compliant
Resolution better than 1 mg
Tri-axis accelerometer in a single package.
On chip mixed signal processing
No moving parts
No loose particle issues
>50,000 g shock survival rating
SMT package: 7mm X 7mm X 1.8mm
2.7V to 3.6V single supply continuous operation
No adjusting external components needed
APPLICATIONS
GPS
– Electronic Compass Tilt Correction/Navigation
Consumer – LCD projectors, pedometers, blood pressure
monitor, digital cameras/MP3 players
Information Appliances – Computer Peripherals/PDA’s/
Cell Phones
Gaming – Joystick/RF Interface/Menu Selection/Tilt
Sensing
Security – Gas Line/Elevator/Fatigue Sensing
GENERAL DESCRIPTION
The MXR9500G/M is a low cost, tri axis accelerometer
fabricated on a standard, submicron CMOS process. It is a
complete sensing system with on-chip mixed signal
processing. The MXR9500G/M measures acceleration with
a full-scale range of ±1.5 g and a sensitivity of 500mV/g
@3.0V at 25
°C. It can measure both dynamic acceleration
(e.g. vibration) and static acceleration (e.g. gravity). The
MXR9500G/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 greater than 50,000 g, leading to
significantly lower failure rate and lower loss due to
handling during PCB assembly and at customer field
application.
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.
FUNCTIONAL BLOCK DIAGRAM
The MXR9500G/M provides three ratiometric analog
outputs that are set to 50% of the power supply voltage at
zero g.
The Max. noise floor is 1 mg/
Hz
allowing signals below
1m
g to be resolved at 1 Hz bandwidth. The MXR9500G/M
is packaged in a hermetically sealed, surface mount LCC
16pins package (7 mm x 7 mm x 1.8 mm height) and is
operational over a
-40°C to +85°C (M) and 0°C to +70°C (G)
temperature range.
I
2
C fast mode interface is soon available in the next generation
chip.
©MEMSIC, Inc.
One Technology Drive Suite 325,Andover MA01810,USA
Tel: +1 978 738 0900 Fax: +1 978 738 0196
www.memsic.com
X
Senso
Gain Adjust Temp
Com
A/D D/A
LPF
Xout
Zout
Yout
Reference
Digital Interface Clock
DI1 SCK1 DI2 SCK2
VDD1
VDD3
VSA1
VSA2
Y
Senso
Gain Adjust Temp
Com
A/D D/A
LPF
Z
Senso
Gain Adjust Temp
Com
A/D D/A
LPF
VDD2
