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參數(shù)資料
| 型號： | MXD2002B |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Low Cost, 【10 g Dual Axis Accelerometer with Digital Outputs |
| 中文描述： | 低成本，【10克雙軸加速度計的數(shù)字輸出 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 378K |
| 代理商： | MXD2002B |
Low Cost,
±
10
g
Dual Axis
Accelerometer with Digital Outputs
MXD2002A/B
FEATURES
Dual axis accelerometer fabricated on a monolithic CMOS IC
On-chip mixed mode signal processing
Resolution better than 6 milli-
g
50,000
g
shock survival rating
30 Hz bandwidth
2.70V to 5.25V single supply operation
Small (5mm x 5mm x 2mm) surface mount package
Continuous self test
Independently programmable axis (factory special)
APPLICATIONS
Automotive –
Vehicle Security/Active Suspension/ABS
HED Angle Control/Tilt Sensing
Security
– Gas Line/Elevator/Fatigue Sensing
Office Equipment
– Computer Peripherals/PDA’s/Mouse
Smart Pens/Cell Phones
Gaming
– Joystick/RF Interface/Menu Selection/Tilt Sensing
White Goods
– Spin/Vibration Control
The MXD2002A/B is a very low cost, dual axis
accelerometer fabricated on a standard, submicron CMOS
process. The MXD2002A/B measures acceleration with a
full-scale range of
±
10
g
. (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 MXD2002A/B 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 up to
50,000
g,
leading to significantly lower failure rates and
lower loss due to handling during assembly.
The MXD2002A/B provides a digital output (ref. other
MEMSIC data sheets for analog or ratiometric analog
outputs). The outputs are digital signals with duty cycles
(ratio of pulsewidth to period) that are proportional to
acceleration. The duty cycle outputs can be directly
interfaced to a micro-processor.
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.
Internal
Oscillator
Sck
(optional)
CLK
Heater
Control
X axis
Y axis
Factory Adjust
Offset & Gain
LPF
LPF
Temperature
Sensor
Voltage
Reference
Vref
Dout X
Vdd
Vda
Gnd
2-AXIS
SENSOR
Dout Y
Tout
Continous
Self Test
A/D
A/D
MXD2002A/B FUNCTIONAL BLOCK DIAGRAM
The typical noise floor is .0015% duty cycle
/
Hz
allowing
signals below 6 milli-
g
to be resolved at 1 Hz bandwidth.
The MXD2002A/B is available in a low profile LCC
surface mount package (5mm x 5mm x 2mm height). It is
hermetically sealed and operational over a -40
°
C to +105
°
C
temperature range.
Due to the standard CMOS structure of the MXD2002A/B,
additional circuitry can easily be incorporated into custom
versions for high volume applications. Contact the factory
for more information.
MEMSIC, Inc.
100 Burtt Road, Andover, MA 01810
Tel: 978.623.8188
Fax: 978.623.9945
www.memsic.com
MEMSIC MXD2002A/B Rev.E
Page 1 of
8
5/15/2004
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