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PDF ADXL278 Data sheet ( Hoja de datos )
| Número de pieza | ADXL278 | |
| Descripción | Dual-Axis / High-g / MEMS Accelerometers | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ADXL278 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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Dual-Axis, High-g,
iMEMS® Accelerometers
ADXL278
FEATURES
GENERAL DESCRIPTION
Complete dual-axis acceleration measurement system on a
single monolithic IC
Available in ±35 g/±35 g, ±50 g/±50 g, or ±70 g/±35 g output
full-scale ranges
Full differential sensor and circuitry for high resistance to
EMI/RFI
Environmentally robust packaging
Complete mechanical and electrical self-test on digital
command
Output ratiometric to supply
Sensitive axes in the plane of the chip
High linearity (0.2% of full scale)
Frequency response down to dc
Low noise
Low power consumption
Tight sensitivity tolerance and 0 g offset capability
Largest available prefilter clipping headroom
400 Hz, 2-pole Bessel filter
Single-supply operation
Compatible with Sn/Pb and Pb-free solder processes
Qualified for automotive applications
The ADXL278 is a low power, complete, dual-axis
accelerometer with signal conditioned voltage outputs that are
on a single monolithic IC. This product measures acceleration
with a full-scale range of (X-axis/Y-axis) ±35 g/±35 g, ±50 g/
±50 g, or ±70 g/±35 g (minimum). The ADXL278 can also
measure both dynamic acceleration (vibration) and static
acceleration (gravity).
The ADXL278 is the fourth-generation surface micromachined
iMEMS® accelerometer from ADI with enhanced performance
and lower cost. Designed for use in front and side impact airbag
applications, this product also provides a complete cost-
effective solution useful for a wide variety of other applications.
The ADXL278 is temperature stable and accurate over the
automotive temperature range, with a self-test feature that fully
exercises all the mechanical and electrical elements of the sensor
with a digital signal applied to a single pin.
The ADXL278 is available in a 5 mm × 5 mm × 2 mm,
8-terminal ceramic LCC package.
APPLICATIONS
Vibration monitoring and control
Vehicle collision sensing
Shock detection
FUNCTIONAL BLOCK DIAGRAM
ADXL278
VS
VDD
VDD2
VDD3
EXC
DIFFERENTIAL
SENSOR
TIMING
GENERATOR
DEMOD
AMP
400Hz
BESSEL
FILTER
XOUT
EXC
DIFFERENTIAL
SENSOR
DEMOD
AMP
400Hz
BESSEL
FILTER
YOUT
SELF-TEST
Figure 1.
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2010 Analog Devices, Inc. All rights reserved.
1 page  
ADXL278
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
Acceleration (Any Axis, Unpowered)
Acceleration (Any Axis, Powered)
VS
All Other Pins
Output Short-Circuit Duration
(Any Pin to Common)
Operating Temperature Range
Storage Temperature
Rating
4,000 g
4,000 g
−0.3 V to +7.0 V
(COM − 0.3 V) to
(VS + 0.3 V)
Indefinite
−65°C to +150°C
−65°C to +150°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
Rev. B | Page 4 of 12
5 Page 
ADXL278
NOTES
Rev. B | Page 10 of 12
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ADXL278.PDF ] | |
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