Data Sheet
MX205Q
Page 1 of 8
MX205Q (RATIOMETRIC)
Low Cost, 5.0g, Dual Axis Accelerometer
with Analog Outputs
General Description
The MX205Q is a very low cost dual-axis acceleration sensor on a monolithic IC. With no moving
parts, the device is extremely reliable and is manufactured on a submicron CMOS process
enabling small geometries and small die size, resulting in low overall cost and high functionality.
The MX205Q is primarily designed for applications requiring high performance and where overall
system cost is a driving factor in component selection. The MX205Q measures acceleration with
a full-scale range of up to 鹵 5.0g and produces an Analog signal output. The X,Y accelerometer
outputs are scaled proportionately to the VDD, VDA supply voltage with the scale of 44%. Typical
noise floor is 750 碌g/鈭欻z rms, allowing signals below 1 .0 milli-g to be resolved in 1 Hz bandwidth.
Frequency response extends to 40 Hz. The frequency response can be extended to 160 Hz with
the implementation of a simple external circuit. See Application Note (AN-00MX-003).
The MX205Q is a dc accelerometer with the capability to measure both ac accelera-
tion, (typical of vibration) or dc accelerations, (such as inertial force or constant, gravity-induced
accelerations).
The MX205Q offers a calibrated temperature sensor output with a positive temperature
coefficient of 5.0 mV/擄C. This device can be temperature compensated easily. The change in
sensitivity over the temperature range 鈥?0擄C to 125擄C is predictable and follows the physical gas
laws. The following equation can be used to predict the sensitivity at any given temperature:
S
IN
X
(T
IN
)
2.67
= S
FIN
X (T
FIN
)
2.67
Temperature in 擄K See Application Note (AN-00MX-002).
The MX205Q is available in a metal can (TO-100) or an LCC surface mount device; both
are hermetically sealed and are operational over the temperature range -40擄C to 125擄C.
Features
鈥?Dual axis acceleration outputs
鈥?Analog outputs, ratiometric
鈥?1.0
mg
Resolution in 1Hz bandwidth
鈥?40 Hz Bandwidth expandable to 160 Hz
See Application Note (AN-00MX-003)
鈥?Quiescent Supply Voltage: 3.5 mA
鈥?0g output voltage 2.315V (with 5V supply)
鈥?50,000g shock survival
鈥?2.70V to 5.25V Single Supply
鈥?On-chip mixed signal processing
鈥?Continuous sensors self test
鈥?Temperature sensor output (Tout) 5mV/擄K
鈥?Packaged in 8 pin LCC SMD or
10 pin TO-100 THRU-HOLE
鈥?Hermetically sealed packaging
鈥?Reference voltage (V
REF
) 2.50V
Applications
鈥?Automotive -
Vehicle Security/Active Suspension/ABS/HED Angle Control
鈥?Security -
Gas Line/Elevator/Fatigue Sensing
鈥?Office Automation Equipment -
Computer Peripherals/Disk Drives/PDA鈥檚/Mouse
Smart Pens/Cell Phones/Printer Head Acceleration Sensor
鈥?Gaming -
Joystick/RF Interface/Menu Selection
鈥?White Goods -
Spin/Vibration Control
Block Diagram of MX20XX
Information furnished by MEMSIC is believed to be
accurate and reliable. However, no responsibility is
assumed by MEMSIC for its use, nor for any infringe-
ments of patents or other rights of third parties which
may result from its use. No license is granted by
implications or otherwise under any patent or patent
rights of MEMSIC.
Technical information.
Subject to change without notice.
MX205Q ANALOG Data Sheet M 8/1/01
廬MEMSIC, Inc. 2000.
100 Burtt Road, Andover, MA 01810
Tel: 978.623.8188 鈥?Fax: 978.623.9945
www.memsic.com
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