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PDF ADXL206 Data sheet ( Hoja de datos )
| Número de pieza | ADXL206 | |
| Descripción | High Temperature iMEMS Accelerometer | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Precision, ±5 g, Dual-Axis,
High Temperature iMEMS Accelerometer
ADXL206
FEATURES
High performance, dual-axis accelerometer
on a single IC
−40°C to +175°C ambient temperature range
Long life: guaranteed 1000 hours at TA = 175°C
13 mm × 8 mm × 2 mm side-brazed ceramic dual in-line
package
1 mg resolution at 60 Hz
Low power: 700 μA at VS = 5 V (typical)
High zero g bias repeatability
High sensitivity accuracy
Bandwidth adjustment with a single capacitor
Single-supply operation
RoHS-compliant
Compatible with Sn/Pb and Pb-free solder processes
APPLICATIONS
Geological exploration tilt and vibration measurement
Extreme high temperature industrial products
GENERAL DESCRIPTION
The ADXL206 is a precision, low power, complete dual-axis
iMEMS® accelerometer for use in high temperature environ-
ments. The accelerometer integrates the sensor with signal
conditioned voltage outputs on a single, monolithic IC.
The ADXL206 measures acceleration with a full-scale range
of ±5 g. The ADXL206 can measure both dynamic acceleration
(for example, vibration) and static acceleration (for example,
gravity).
The typical noise floor is 110 μg/√Hz, allowing signals below
1 mg (0.06° of inclination) to be resolved in tilt sensing appli-
cations using narrow bandwidths (<60 Hz).
The user selects the bandwidth of the accelerometer using
Capacitors CX and CY at the XOUT and YOUT pins, respectively.
Bandwidths of 0.5 Hz to 2.5 kHz can be selected to suit the
application.
The ADXL206 is available in a 13 mm × 8 mm × 2 mm, 8-lead,
side-brazed ceramic dual in-line package (SBDIP).
FUNCTIONAL BLOCK DIAGRAM
+5V
VS
ADXL206
CDC
SENSOR
COM
AC
AMP
DEMOD
OUTPUT
AMP
OUTPUT
AMP
RFILT
32kΩ
RFILT
32kΩ
ST
YOUT
XOUT
CY CX
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
©2011 Analog Devices, Inc. All rights reserved.
1 page  
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
COM 1
+X 8 ST
NC 2 ADXL206 7 VS2
COM 3 TOP VIEW 6 VS
YOUT 4 (Not to Scale) 5 XOUT
NC = NO CONNECT. DO NOT
CONNECT TO THIS PIN.
Figure 3. Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
1, 3 COM
2 NC
4 YOUT
5 XOUT
6 VS
7 VS2
8 ST
Description
Common.
No Connect. Do not connect to this pin.
Y Channel Output.
X Channel Output.
Supply.
Supply. Must be connected to VS.
Self-Test.
ADXL206
Rev. 0 | Page 5 of 12
5 Page 
USING THE ADXL206 WITH OPERATING VOLTAGES
OTHER THAN 5 V
The ADXL206 is tested and specified at VS = 5 V; however, it
can be powered with VS as low as 3 V or as high as 6 V. Some
performance parameters change as the supply voltage is varied.
The ADXL206 output is ratiometric; therefore, the output
sensitivity (or scale factor) varies proportionally to the supply
voltage. The zero g bias output is also ratiometric; therefore, the
zero g output is nominally equal to VS/2 at all supply voltages.
The output noise is not ratiometric but is absolute in volts;
therefore, the noise density decreases as the supply voltage
increases.
Self-test response in g is roughly proportional to the square of
the supply voltage. However, when ratiometricity of sensitivity
is factored in with supply voltage, self-test response in volts is
roughly proportional to the cube of the supply voltage. There-
fore, at VS = 3 V, the typical self-test response is approximately
50 mV or about 160 mg.
ADXL206
USING THE ADXL206 AS A DUAL-AXIS TILT
SENSOR
One of the most popular applications of the ADXL206 is tilt
measurement. An accelerometer uses the force of gravity as an
input vector to determine the orientation of an object in space.
An accelerometer is most sensitive to tilt when its sensitive axis
is perpendicular to the force of gravity, that is, parallel to the
earth’s surface. At this orientation, the sensitivity of the acceler-
ometer to changes in tilt is highest. When the axis of sensitivity
is parallel to gravity, that is, near its +1 g or −1 g reading, the
change in output acceleration per degree of tilt is negligible.
When the accelerometer is perpendicular to gravity, its output
changes nearly 17.5 mg per degree of tilt. At 45°, its output
changes at only 12.2 mg per degree and resolution declines.
Dual-Axis Tilt Sensor: Converting Acceleration to Tilt
When the accelerometer is oriented so that both its x-axis and
y-axis are parallel to the earth’s surface, it can be used as a 2-axis
tilt sensor with a roll axis and a pitch axis. After the output signal
from the accelerometer is converted to an acceleration that varies
between −1 g and +1 g, the output tilt in degrees is calculated
as follows:
PITCH = arcsin(AX/1 g)
ROLL = arcsin(AY/1 g)
Make sure to account for overranges. It is possible for the
accelerometer to output a signal greater than ±1 g due to
vibration, shock, or other accelerations.
Rev. 0 | Page 11 of 12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ADXL206.PDF ] | |
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