Low Profile, Low Consumption
鹵0.5
g
Dual Axis Accelerometer with
Absolute Analog Outputs
MXA6500E
FEATURES
Low power consumption: typical 2mA@3V
Resolution better than 1 milli-g
Dual axis accelerometer fabricated on a monolithic
CMOS IC
On chip mixed signal processing
No moving parts
No loose particle issues
>50,000
g
shock survival rating
5mm X 5mm X 1.55mm LCC package
2.7V to 3.6V single supply continuous operation
Ultra low initial Zero-g Offset
No adjustment needed outside
TEMP
TP
Internal
Oscillator
VREF
Temperature
Sensor
TEMP
CLK
PD
CLK
Heater
Control
Coarse
Gain Adj.
Fine Gain
Adj.
No
Connection
Vref
Low Pass Buf.
Filter
CLK
No
Connection
VDD
X aixs
CLK
Coarse
Gain Adj.
Temp
Comp.
A/D
D/A
CLK
Vref
Xout
CLK TEMP CLK
Fine Gain
Adj.
Temp
Comp.
Y aixs
Acceleration
Sensor
CLK
A/D
CLK
D/A
CLK
Low Pass Buf.
Filter
CLK
Yout
CLKTEMP
GND
APPLICATIONS
Tilt and motion sensing in cost-sensitive applications
Smart handheld devices
Computer security
Input devices
Pedometers and activity monitors
Gaming controllers
Toys and entertainment products
GENERAL DESCRIPTION
The MXA6500E is a low cost; dual axis accelerometer
fabricated on a standard, submicron CMOS process. It is a
complete sensing system with on-chip mixed signal
processing. The MXA6500E measures acceleration with a
full-scale range of
鹵0.5
g
and a sensitivity of 500mV/g @3V
at 25
擄C
. It can measure both dynamic acceleration (e.g.
vibration) and static acceleration (e.g. gravity). The
MXA6500E 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
assembly and at customer field application.
MXA6500E FUNCTIONAL BLOCK DIAGRAM
The max noise floor is 1 mg/
Hz
allowing signals below
1 milli-g to be resolved at 1 Hz bandwidth.
The
MXA6500E is packaged in a hermetically sealed lowprofile
LCC surface mount package (5 mm x 5 mm x 1.55 mm
height)
.
It is operational over a -40擄C to +85擄C temperature
range.
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.
漏MEMSIC,
Inc.
800 Turnpike St., Suite 202, North Andover, MA 01845
Tel: 978.738.0900
Fax: 978.738.0196
www.memsic.com
MEMSIC MXA6500E Rev.B
Page 1 of 6
3/22/2005
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