ad22285 Analog Devices, Inc., ad22285 Datasheet

no-image

ad22285

Manufacturer Part Number
ad22285
Description
Dual-axis, High-g, Mems Accelerometers
Manufacturer
Analog Devices, Inc.
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD22285
Manufacturer:
AD
Quantity:
3 200
Part Number:
AD22285
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ad22285-P
Manufacturer:
AD
Quantity:
248
Part Number:
ad22285-R2
Manufacturer:
ADI/亚德诺
Quantity:
20 000
FEATURES
Complete dual-axis acceleration measurement system on
Available in ±35 g/±35 g, ±50 g/±50 g, or ±70 g/±35 g
Full differential sensor and circuitry for high resistance
Environmentally robust packaging
Complete mechanical and electrical self-test on
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
APPLICATIONS
Vibration monitoring and control
Vehicle collision sensing
Shock detection
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or 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. Trademarks and
registered trademarks are the property of their respective owners.
a single monolithic IC
output full-scale ranges
to EMI/RFI
digital command
V
S
V
V
V
DD2
DD3
DD
EXC
EXC
FUNCTIONAL BLOCK DIAGRAM
GENERATOR
TIMING
DIFFERENTIAL
DIFFERENTIAL
SELF-TEST
SENSOR
SENSOR
Figure 1.
DEMOD
DEMOD
GENERAL DESCRIPTION
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.
AMP
AMP
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
ADXL278
BESSEL
BESSEL
FILTER
FILTER
400Hz
400Hz
iMEMS
©2005 Analog Devices, Inc. All rights reserved.
X
Y
OUT
OUT
®
Dual-Axis, High-g,
Accelerometers
ADXL278
www.analog.com

Related parts for ad22285

ad22285 Summary of contents

Page 1

... DIFFERENTIAL DEMOD EXC SENSOR AMP SELF-TEST Figure 1. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 Dual-Axis, High-g, ® iMEMS Accelerometers ADXL278 ADXL278 400Hz BESSEL X OUT FILTER 400Hz BESSEL Y OUT FILTER www.analog.com ©2005 Analog Devices, Inc. All rights reserved. ...

Page 2

ADXL278 TABLE OF CONTENTS Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions............................. 5 Theory of Operation ........................................................................ 7 Applications....................................................................................... 8 REVISION HISTORY 5/05—Rev Rev. A Power Supply Decoupling ............................................................8 Self-Test ..........................................................................................8 Clock ...

Page 3

... Quiescent Supply Current TEMPERATURE RANGE 1 All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed. 2 Zero g output is ratiometric. 3 Self-test output (Self-Test Output × Model No. AD22284 Model No. AD22285 Min Typ Max Min 0.1 −5 +5 − ...

Page 4

ADXL278 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Acceleration (Any Axis, Unpowered) Acceleration (Any Axis, Powered All Other Pins Output Short-Circuit Duration (Any Pin to Common) Operating Temperature Range Storage Temperature ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic 1 V DD3 2 Y OUT 3 COM OUT DD2 V DD2 ...

Page 6

ADXL278 Table 4. Recommended Soldering Profile Profile Feature AVERAGE RAMP RATE ( PREHEAT Minimum Temperature (T ) SMIN Maximum Temperature (T ) SMAX TIME ( SMIN SMAX ...

Page 7

THEORY OF OPERATION The ADXL278 provides a fully differential sensor structure and circuit path, resulting in the industry’s highest resistance to EMI/RFI effects. This latest generation uses electrical feedback with zero-force feedback for improved accuracy and stability. The sensor resonant ...

Page 8

ADXL278 APPLICATIONS POWER SUPPLY DECOUPLING For most applications, a single 0.1 μF capacitor, C decouples the accelerometer from noise on the power supply. However, in some cases, particularly where noise is present at the 200 kHz internal clock frequency (or ...

Page 9

... Parts Measurement 1 Model per Reel Range AD22284-A-R2 250 ±35 g/±35 g AD22284-A 3000 ±35 g/±35 g AD22285-R2 250 ±50 g/±50 g AD22285 3000 ±50 g/±50 g AD22286-R2 250 ±70 g/±35 g AD22286 3000 ±70 g/± All models are on tape and reel and are Pb-free parts. 1.27 5.00 1. ...

Page 10

ADXL278 NOTES Rev Page ...

Page 11

NOTES Rev Page ADXL278 ...

Page 12

... ADXL278 NOTES ©2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05365–0–5/05(A) Rev Page ...

Related keywords