|
|
PDF ADXL327 Data sheet ( Hoja de datos )
| Número de pieza | ADXL327 | |
| Descripción | Accelerometer | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ADXL327 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
|
No Preview Available !
FEATURES
3-axis sensing
Small, low profile package
4 mm × 4 mm × 1.45 mm LFCSP
Low power: 350 μA typical
Single-supply operation: 1.8 V to 3.6 V
10,000 g shock survival
Excellent temperature stability
Bandwidth adjustment with a single capacitor per axis
RoHS/WEEE lead-free compliant
APPLICATIONS
Cost-sensitive, low power, motion- and tilt-sensing applications
Mobile devices
Gaming systems
Disk drive protection
Image stabilization
Sports and health devices
Small, Low Power, 3-Axis ±2 g
Accelerometer
ADXL327
GENERAL DESCRIPTION
The ADXL327 is a small, low power, complete 3-axis accelerometer
with signal conditioned voltage outputs. The product measures
acceleration with a minimum full-scale range of ±2 g. It can
measure the static acceleration of gravity in tilt-sensing
applications, as well as dynamic acceleration, resulting from
motion, shock, or vibration.
The user selects the bandwidth of the accelerometer using
the CX, CY, and CZ capacitors at the XOUT, YOUT, and ZOUT pins.
Bandwidths can be selected to suit the application with a
range of 0.5 Hz to 1600 Hz for X and Y axes and a range of
0.5 Hz to 550 Hz for the Z axis.
The ADXL327 is available in a small, low profile, 4 mm ×
4 mm × 1.45 mm, 16-lead, plastic lead frame chip scale package
(LFCSP_LQ).
FUNCTIONAL BLOCK DIAGRAM
+3V
VS
ADXL327
~32kΩ XOUT
OUTPUT AMP
CDC
3-AXIS
SENSOR
AC AMP
DEMOD
~32kΩ
OUTPUT AMP
CX
YOUT
CY
~32kΩ
OUTPUT AMP
ZOUT
CZ
COM
ST
Figure 1.
Rev. 0
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.
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
©2009 Analog Devices, Inc. All rights reserved.
1 page  
ADXL327
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)
Temperature Range (Powered)
Temperature Range (Storage)
Rating
10,000 g
10,000 g
−0.3 V to +3.6 V
(COM − 0.3 V) to (VS + 0.3 V)
Indefinite
−55°C to +125°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. 0 | Page 4 of 16
5 Page 
ADXL327
THEORY OF OPERATION
The ADXL327 is a complete 3-axis acceleration measurement
system. The ADXL327 has a measurement range of ±2 g minimum.
It contains a polysilicon surface micromachined sensor and signal
conditioning circuitry to implement an open-loop acceleration
measurement architecture. The output signals are analog voltages
that are proportional to acceleration. The accelerometer can
measure the static acceleration of gravity in tilt sensing applications,
as well as dynamic acceleration, resulting from motion, shock,
or vibration.
The sensor is a polysilicon surface micromachined structure
built on top of a silicon wafer. Polysilicon springs suspend the
structure over the surface of the wafer and provide a resistance
against acceleration forces. Deflection of the structure is measured
using a differential capacitor that consists of independent fixed
plates and plates attached to the moving mass. The fixed plates
are driven by 180° out-of-phase square waves. Acceleration deflects
the moving mass and unbalances the differential capacitor resulting
in a sensor output whose amplitude is proportional to acceleration.
Phase-sensitive demodulation techniques are then used to
determine the magnitude and direction of the acceleration.
The demodulator output is amplified and brought off-chip through
a 32 kΩ resistor. The user then sets the signal bandwidth of the
device by adding a capacitor. This filtering improves measurement
resolution and helps prevent aliasing.
MECHANICAL SENSOR
The ADXL327 uses a single structure for sensing the X, Y, and Z axes.
As a result, the three axes sense directions are highly orthogonal
with little cross-axis sensitivity. Mechanical misalignment of the
sensor die to the package is the chief source of cross-axis sensitivity.
Mechanical misalignment can, of course, be calibrated out at
the system level.
PERFORMANCE
Rather than using additional temperature compensation circuitry,
innovative design techniques ensure that high performance is
built-in to the ADXL327. As a result, there is neither quantization
error nor nonmonotonic behavior, and temperature hysteresis is
very low (typically <3 mg over the −25°C to +70°C temperature
range).
Rev. 0 | Page 10 of 16
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ADXL327.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ADXL320 | Small and Thin 5 g Accelerometer | Analog Devices |
| ADXL321 | Small and Thin 18 g Accelerometer | Analog Devices |
| ADXL322 | Small and Thin +-2 g Accelerometer | Analog Devices |
| ADXL323 | Dual Axis Accelerometer | Analog Devices |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |