ADXL210AQC-1 Analog Devices Inc, ADXL210AQC-1 Datasheet

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ADXL210AQC-1

Manufacturer Part Number
ADXL210AQC-1
Description
IC ACCELEROMETER DUAL 14CERPAK
Manufacturer
Analog Devices Inc
Datasheet

Specifications of ADXL210AQC-1

Rohs Status
RoHS non-compliant
Axis
X, Y
Acceleration Range
±10g
Sensitivity
100mV/g
Voltage - Supply
3 V ~ 5.25 V
Output Type
Analog
Bandwidth
6kHz
Mounting Type
Surface Mount
Package / Case
14-CerPak
Interface
-

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Part Number:
ADXL210AQC-1
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ON
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329
a
i
REV. B
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
MEM
FEATURES
2-Axis Acceleration Sensor on a Single IC Chip
Measures Static Acceleration as Well as Dynamic
Duty Cycle Output with User Adjustable Period
Low Power <0.6 mA
Faster Response than Electrolytic, Mercury or Thermal
Bandwidth Adjustment with a Single Capacitor Per Axis
5 m g Resolution at 60 Hz Bandwidth
+3 V to +5.25 V Single Supply Operation
1000 g Shock Survival
APPLICATIONS
2-Axis Tilt Sensing
Computer Peripherals
Inertial Navigation
Seismic Monitoring
Vehicle Security Systems
Battery Powered Motion Sensing
S
Acceleration
Tilt Sensors
is a registered trademark of Analog Devices, Inc.
C
DC
+3.0V TO +5.25V
OSCILLATOR
Y SENSOR
X SENSOR
V
DD
FUNCTIONAL BLOCK DIAGRAM
COM
DEMOD
DEMOD
V
DD
R
32k
R
32k
FILT
FILT
Y
FILT
C
X
Low Cost 2 g/ 10 g Dual Axis
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
GENERAL DESCRIPTION
The ADXL202/ADXL210 are low cost, low power, complete
2-axis accelerometers with a measurement range of either
namic 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 the acceleration in each of
the 2 sensitive axes. These outputs may be measured directly
with a microprocessor counter, requiring no A/D converter or
glue logic. The output period is adjustable from 0.5 ms to 10 ms
via a single resistor (R
voltage output proportional to acceleration is available from the
X
duty cycle outputs.
The bandwidth of the ADXL202/ADXL210 may be set from
0.01 Hz to 5 kHz via capacitors C
floor is 500 g/ Hz allowing signals below 5 mg to be resolved
for bandwidths below 60 Hz.
The ADXL202/ADXL210 is available in a hermetic 14-lead
Surface Mount CERPAK, specified over the 0 C to +70 C
commercial or –40 C to +85 C industrial temperature range.
X
A
C
FILT
Y
2 g/ 10 g. The ADXL202/ADXL210 can measure both dy-
FILT
IN
ADXL202/
ADXL210
MODULATOR
2 =
T2
CYCLE
(DCM)
and Y
DUTY
A( g ) = (T1/T2 – 0.5)/12.5%
0 g = 50% DUTY CYCLE
T2 = R
iMEMS
R
SELF TEST
SET
T1
SET
FILT
/125M
pins, or may be reconstructed by filtering the
T2
Y OUT
World Wide Web Site: http://www.analog.com
X OUT
SET
ADXL202/ADXL210
). If a voltage output is desired, a
with Digital Output
®
C
O
U
N
E
R
T
Accelerometers
P
X
and C
© Analog Devices, Inc., 1999
Y
. The typical noise

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ADXL210AQC-1 Summary of contents

Page 1

... Analog Devices. Low Cost Dual Axis GENERAL DESCRIPTION The ADXL202/ADXL210 are low cost, low power, complete 2-axis accelerometers with a measurement range of either The ADXL202/ADXL210 can measure both dy- namic acceleration (e.g., vibration) and static acceleration (e.g., gravity). ...

Page 2

ADXL202/ADXL210–SPECIFICATIONS Parameter SENSOR INPUT 1 Measurement Range Nonlinearity 2 Alignment Error Alignment Error 3 Transverse Sensitivity SENSITIVITY Duty Cycle per g Sensitivity, Analog Output 4 Temperature Drift ZERO g BIAS LEVEL 0 g Duty Cycle Initial Offset 0 g Duty ...

Page 3

... C/W Model ADXL202JQC ADXL202AQC ADXL210JQC ADXL210AQC CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADXL202/ADXL210 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...

Page 4

ADXL202/ADXL210 TYPICAL CHARACTERISTICS 1.06 1.04 1.02 1.00 0.98 0.96 0.94 –45 –30 – TEMPERATURE – C Figure 2. Normalized DCM Period (T2) vs. Temperature 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –40 –30 –20 –10 ...

Page 5

DUTY CYCLE OUTPUT – % per g Figure 8. Typical Sensitivity per ...

Page 6

ADXL202/ADXL210 DEFINITIONS T1 Length of the “on” portion of the cycle. T2 Length of the total cycle. Duty Cycle Ratio of the “on” time (T1) of the cycle to the total cycle (T2). Defined as T1/T2 for the ADXL202/ ADXL210. ...

Page 7

... T2 period. When selecting a microcontroller it is helpful to have a counter timer port available. The microcontroller should have provisions for software calibration. While the ADXL202/ADXL210 are highly accurate accelerometers, they have a wide tolerance for –7– ADXL202/ADXL210 T2 C ...

Page 8

ADXL202/ADXL210 initial offset. The easiest way to null this offset is with a calibra- tion factor saved on the microcontroller user calibration for zero g. In the case where the offset is calibrated during manu- facture, there ...

Page 9

... MEASURING 360 OF TILT It is possible to measure a full 360 of orientation through grav- ity by using two accelerometers oriented perpendicular to one another (see Figure 15). When one sensor is reading a maxi- mum change in output per degree, the other is at its minimum. 0 ...

Page 10

ADXL202/ADXL210 USING THE ANALOG OUTPUT The ADXL202/ADXL210 was specifically designed for use with its digital outputs, but has provisions to provide analog outputs as well. Duty Cycle Filtering An analog output can be reconstructed by filtering the duty cycle output. ...

Page 11

SEATING REV. B OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 14-Lead CERPAK (QC-14) 0.390 (9.906) MAX 14 8 0.419 (10.643) 0.394 (10.008 PIN 1 0.300 (7.62) 0.195 (4.953) 0.115 ...

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