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MXD2020HL Datasheet

  • MXD2020HL

  • Improved, Ultra Low Noise Dual Axis Accelerometer with Digit...

  • 7頁

  • ETC

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Improved, Ultra Low Noise
鹵1
g
Dual Axis Accelerometer with
Digital Outputs
MXD2020GL/HL
MXD2020ML/NL
FEATURES
Resolution better than 1 milli-g
Dual axis accelerometer fabricated on a monolithic CMOS IC
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)
Compensated for Sensitivity over temperature
Ultra low initial Zero-g Offset
Sck
(optional)
Internal
Oscillator
Tem perature
Sensor
Voltage
R eference
C ontinous
Self Test
Tout
C LK
Vref
H eater
C ontrol
X axis
LPF
A/D
Dout X
Factory Adjust
Offset & Gain
Y axis
LPF
A/D
Dout Y
APPLICATIONS
Automotive 鈥?/div>
Vehicle Security/Vehicle stability control/
Headlight Angle Control/Tilt Sensing
Security
鈥?Gas Line/Elevator/Fatigue Sensing
Information Appliances
鈥?Computer Peripherals/PDA鈥檚/Mouse
Smart Pens/Cell Phones
Gaming
鈥?Joystick/RF Interface/Menu Selection/Tilt Sensing
GPS
鈥?/div>
electronic Compass tilt Correction
Consumer
鈥?/div>
LCD projectors, pedometers, blood pressure
Monitor, digital cameras
GENERAL DESCRIPTION
The MXD2020GL/HL/ML/NL 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
MXD2020GL/HL/ML/NL measures acceleration with a
full-scale range of
鹵1
g
and a sensitivity of 20%/g. It can
measure both dynamic acceleration (e.g. vibration) and
static acceleration (e.g. gravity).
The MXD2020GL/HL/ML/NL 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.
2-AXIS
SEN SOR
Vdd
G nd
Vda
MXD2020GL/HL/ML/NL FUNCTIONAL BLOCK
DIAGRAM
The MXD2020GL/HL/ML/NL 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 milli-g to be resolved at 1 Hz bandwidth.
The
MXD2020GL/HL/ML/NL 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
擄C
to 105
擄C(M/NL)
and
0擄C to 70擄C(G/HL) temperature range.
餂橫EMSIC,
Inc.
800 Turnpike St., Suite 202, North Andover, MA 01845
Tel: 978.738.0900
Fax: 978.738.0196
www.memsic.com
MEMSIC MXD2020GL/ML
Page 1 of 7
2002.08.29.1

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    ETC [ETC]
  • 英文版
    Low Cost, 2.0g, Dual Axis Accelerometer with Digital Outputs
    ETC
  • 英文版
    Low Cost, 2.0g, Dual Axis Accelerometer with Digital Outputs
    ETC [ETC]
  • 英文版
    Ultra Low Noise, Low offset Drift +1g, -1g Dual Axis Acceler...
    ETC
  • 英文版
    Ultra Low Noise, Low offset Drift +1g, -1g Dual Axis Acceler...
    ETC [ETC]
  • 英文版
    Ultra Low Noise, Low offset Drift +1g, -1g Dual Axis Acceler...
    ETC
  • 英文版
    Ultra Low Noise, Low offset Drift +1g, -1g Dual Axis Acceler...
    ETC [ETC]
  • 英文版
    Improved, Ultra Low Noise Dual Axis Accelerometer with Digit...
    ETC
  • 英文版
    Improved, Ultra Low Noise Dual Axis Accelerometer with Digit...
    ETC [ETC]
  • 英文版
    Improved, Ultra Low Noise Dual Axis Accelerometer with Digit...
    ETC
  • 英文版
    Improved, Ultra Low Noise Dual Axis Accelerometer with Digit...
    ETC [ETC]
  • 英文版
    Improved, Ultra Low Noise Dual Axis Accelerometer with Digit...
    ETC
  • 英文版
    Improved, Ultra Low Noise Dual Axis Accelerometer with Digit...
    ETC [ETC]
  • 英文版
    Improved, Ultra Low Noise Dual Axis Accelerometer with Digit...
    ETC

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