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ADXL210E Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADXL210E
Beschreibung Low-Cost 10 g Dual-Axis Accelerometer
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
ADXL210E Datasheet, Funktion
a
FEATURES
2-Axis Acceleration Sensor on a Single IC Chip
5 mm ؋ 5 mm ؋ 2 mm Ultrasmall Chip Scale Package
2 mg Resolution at 60 Hz
Low Power < 0.6 mA
Direct Interface to Low-Cost Microcontrollers via
Duty Cycle Output
BW Adjustment with a Single Capacitor
www.DataSheet4U3.cVomto 5.25 V Single-Supply Operation
1000 g Shock Survival
APPLICATIONS
2-Axis Tilt Sensing with Faster Response than
Electrolytic, Mercury, or Thermal Sensors
Computer Peripherals
Information Appliances
Alarms and Motion Detectors
Disk Drives
Vehicle Security
Low-Cost ؎10 g Dual-Axis
Accelerometer with Duty Cycle
ADXL210E
FUNCTIONAL BLOCK DIAGRAM
3V TO 5.25V
VDD
CX
XFILT
SELF-TEST
X SENSOR
DEMOD
RFILT
32k
ANALOG
XOUT
C
O
CDC
OSCILLATOR
ADXL210E
TO
DUTY
U
N P
CYCLE
T
DEMOD
Y SENSOR
RFILT
32k
(ADC)
YOUT
E
R
COM
YFILT
T2
CY RSET
T2
T1
A(g) = (T1/T2 – 0.5)/4%
0g = 50% DUTY CYCLE
T2 = RSET/125M
GENERAL DESCRIPTION
The ADXL210E is a low-cost, low-power, complete 2-axis acceler-
ometer with a digital output, all on a single monolithic IC. It is an
improved version of the ADXL210AQC/JQC. The ADXL210E
will measure accelerations with a full-scale range of ± 10 g. The
ADXL210E can measure both dynamic acceleration (e.g., vibra-
tion) and static acceleration (e.g., gravity).
The outputs are analog voltage or digital signals whose duty cycles
(ratio of pulsewidth to period) are proportional to acceleration.
The duty cycle outputs can be directly measured by a micro-
processor counter without an A/D converter or glue logic. The
duty cycle period is adjustable from 0.5 ms to 10 ms via a single
resistor (RSET).
The typical noise floor is 200 gHz, allowing signals below
2 mg (at 60 Hz bandwidth) to be resolved.
The bandwidth of the accelerometer is set with capacitors CX and
CY at the XFILT and YFILT pins. An analog output can be recon-
structed by filtering the duty cycle output.
The ADXL210E is available in a 5 mm ϫ 5 mm ϫ 2 mm 8-lead
hermetic LCC package.
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
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
© Analog Devices, Inc., 2002






ADXL210E Datasheet, Funktion
ADXL210E
25
20
15
10
5
0
www.DataSheet4U.co2m30 250 270 290 310 330 350 370 390 410
NOISE DENSITY g Hz rms
TPC 13. Noise Density Distribution, VDD = 3 V
0.7
0.6 VS = 5 VDC
0.5
VS = 3.5 VDC
0.4
0.3
0.2
0.1
0
40 20
0 20 40 60
TEMPERATURE ؇C
80 100
TPC 14. Typical Supply Current vs. Temperature
20
18
16
14
12
10
8
6
4
2
0
DEGREES OF MISALIGNMENT
TPC 15. Rotational Die Alignment
35
30
25
20
15
10
5
0
150 170 190 210 230 250 270 290 310
NOISE DENSITY g Hz rms
TPC 16. Noise Density Distribution, VDD = 5 V
40
35
30
25
20
15
10
5
0
3 2 1
0
1
2
3
PERCENT
TPC 17. Cross-Axis Sensitivity Distribution
3 VDD
XOUT
CFILT = 0.01F
2
1
0
0
0.4 0.8 1.2
TIME ms
1.4
TPC 18. Typical Turn-On Time
–6– REV. 0

6 Page









ADXL210E pdf, datenblatt
ADXL210E
www.DataSheet4U.com
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
8-Terminal Ceramic Leadless Chip Carrier
(E-8)
0.197 (5.00) 0.070 (1.78)
SQ
0.050 (1.27) ٠ 0.015 (0.38)
0.177
(4.50)
SQ
TOP VIEW
0.050 (1.27)
0.050 (1.27)
7
5
1 0.075
(1.91)
0.025
(0.64)
3
R0.028 (0.70)
0.008
(0.20)
R 0.008
(0.20)
٠ 0.015 (0.38)
BOTTOM VIEW
CONTROLLING DIMENSIONS ARE IN MILLIMETERS
0.099
(2.50)
0.099
(2.50)
–12–
REV. 0

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