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PDF ADXL213 Data sheet ( Hoja de datos )
| Número de pieza | ADXL213 | |
| Descripción | Low Cost 1.2 g Dual Axis Accelerometer | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ADXL213 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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Low Cost ±1.2 g Dual
Axis Accelerometer
ADXL213
FEATURES
Dual axis accelerometer on a single IC chip
5 mm × 5 mm × 2 mm LCC package
1 mg resolution at 60 Hz
Low power: 700 µA at VS = 5 V (typical)
High zero g bias stability
High sensitivity accuracy
www.DataSheePt4uUls.ceowmidth modulated digital outputs
X and Y axes aligned to within 0.1° (typical)
BW adjustment with a single capacitor
Single-supply operation
3500 g shock survival
APPLICATIONS
Automotive tilt alarms
Data projectors
Navigation
Platform stabilization/leveling
Alarms and motion detectors
High accuracy, 2-axis tilt sensing
GENERAL DESCRIPTION
The ADXL213 is a low cost, low power, complete dual axis
accelerometer with signal conditioned, duty cycle modulated
outputs, all on a single monolithic IC. The ADXL213 measures
acceleration with a full-scale range of ±1.2 g (typical). The
ADXL213 can measure both dynamic acceleration (e.g.,
vibration) and static acceleration (e.g., gravity).
The outputs are digital signals whose duty cycles (ratio of pulse
width to period) are proportional to acceleration (30%/g). The
duty cycle outputs can be directly measured by a microcontrol-
ler without an A/D converter or glue logic.
Innovative design techniques are used to ensure high zero g bias
stability (typically better than 0.25 mg/°C), as well as tight sensi-
tivity stability (typically better than 50 ppm/°C).
The typical noise floor is 160 µg/√Hz, allowing signals below
1 mg (0.06° of inclination) to be resolved in tilt sensing applica-
tions using narrow bandwidths (<60 Hz).
The user selects the bandwidth of the accelerometer using
capacitors CX and CY at the XFILT and YFILT pins. Bandwidths of
0.5 Hz to 250 Hz may be selected to suit the application.
The ADXL213 is available in a 5 mm × 5 mm × 2 mm, 8-pad
hermetic LCC package.
FUNCTIONAL BLOCK DIAGRAM
+VS
+VS
CY
YFILT
ADXL213
CDC
SENSOR
AC
AMP
DEMOD
OUTPUT 32kΩ
AMP
OUTPUT
AMP 32kΩ
DCM
YOUT
XOUT
COM
ST
XFILT
CX
T2
RSET
T2
T1
A(g) = (T1/T2 – 0.5)/30%
0g = 50% DUTY CYCLE
T2(s) = RSET/125MΩ
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. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
1 page  
ADXL213
TYPICAL PERFORMANCE CHARACTERISTICS
(VS = 5 V for all graphs, unless otherwise noted.)
25.0
25.0
20.0 20.0
15.0 15.0
10.0
www.DataSheet4U.com5.0
0
DUTY CYCLE OUTPUT (%)
Figure 3. X Axis Zero g Bias Deviation from Ideal at 25°C
10.0
5.0
0
DUTY CYCLE OUTPUT (%)
Figure 6. Y Axis Zero g Bias Deviation from Ideal at 25°C
30.0
25.0
20.0
15.0
10.0
5.0
0
TEMPCO (mg/°C)
Figure 4. X Axis Zero g Bias Tempco
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0
TEMPCO (mg/°C)
Figure 7. Y Axis Zero g Bias Tempco
30.0
25.0
20.0
15.0
10.0
5.0
0
DUTY CYCLE OUTPUT (% per g)
Figure 5. X Axis Sensitivity at 25°C
30.0
25.0
20.0
15.0
10.0
5.0
0
Rev. 0 | Page 5 of 12
DUTY CYCLE OUTPUT (% per g)
Figure 8. Y Axis Sensitivity at 25°C
5 Page 
PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS
www.DataSheet4U.com
ADXL213E
TOP VIEW
(Not to Scale)
ST 1
T2 2
COM 3
VS
8
4
YOUT
7 XFILT
6 YFILT
5 XOUT
Figure 22. ADXL213 8-Lead CLCC
Table 7. ADXL213 8-Lead CLCC Pin Function Descriptions
Pin No.
Mnemonic
Description
1 ST
Self Test
2 T2
RSET Resistor to Common
3 COM
Common
4 YOUT
Y Channel Output
5 XOUT
X Channel Output
6 YFILT
Y Channel Filter Pin
7 XFILT
X Channel Filter Pin
8 VS
3 V to 6 V
ADXL213
Rev. 0 | Page 11 of 12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ADXL213.PDF ] | |
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