ANALOG DEVICES ADXL206 Service Manual
Precision, ±5 g, Dual-Axis,
V
High Temperature iMEMS Accelerometer
FEATURES
High performance, dual-axis accelerometer
on a single IC
−40°C to +175°C ambient temperature range
Long life: guaranteed 1000 hours at T
13 mm × 8 mm × 2 mm side-brazed ceramic dual in-line
package
1 mg resolution at 60 Hz
Low power: 700 μA at V
= 5 V (typical)
S
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
= 175°C
A
FUNCTIONAL BLOCK DIAGRAM
+5
ADXL206
GENERAL DESCRIPTION
The ADXL206 is a precision, low power, complete dual-axis
iMEMS® accelerometer for use in high temperature environments. 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 g/√Hz, allowing signals below
1 mg (0.06° of inclination) to be resolved in tilt sensing applications using narrow bandwidths (<60 Hz).
The user selects the bandwidth of the accelerometer using
Capacitors C
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).
and CY at the X
X
OUT
and Y
pins, respectively.
OUT
V
S
ADXL206
C
DC
SENSOR
COM ST Y
AC
AMP
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.
DEMOD
Figure 1.
OUTPUT
AMP
R
FILT
32kΩ
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.
OUTPUT
AMP
R
FILT
32kΩ
OUT
C
Y
X
OUT
C
X
09600-001
ADXL206
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 4
Thermal Resistance ...................................................................... 4
ESD Caution .................................................................................. 4
Pin Configuration and Function Descriptions ............................. 5
Typical Performance Characteristics ............................................. 6
REVISION HISTORY
4/11—Revision 0: Initial Version
Theory of Operation .........................................................................9
Performance ...................................................................................9
Applications Information .............................................................. 10
Power Supply Decoupling ......................................................... 10
Setting the Bandwidth Using CX and CY ................................. 10
Self-Test ....................................................................................... 10
Design Trade-Offs for Selecting Filter Characteristics:
Noise/Bandwidth Trade-Off ........................................................ 10
Using the ADXL206 with Operating Voltages
Other Than 5 V .......................................................................... 11
Using the ADXL206 As a Dual-Axis Tilt Sensor ................... 11
Outline Dimensions ....................................................................... 12
Ordering Guide .......................................................................... 12
Rev. 0 | Page 2 of 12
ADXL206
SPECIFICATIONS
TA = −40°C to +175°C, VS = 5 V, CX = 0.1 F, acceleration = 0 g, unless otherwise noted.1
Table 1.
Parameter Test Conditions/Comments Min Typ Max Unit
SENSOR INPUT Each axis
Measurement Range
Nonlinearity ±0.2 % FS
Package Alignment Error ±1 Degrees
Alignment Error X sensor to Y sensor ±0.1 Degrees
Cross-Axis Sensitivity ±1.5 %
SENSITIVITY (RATIOMETRIC)
Sensitivity at X
Sensitivity Change Due to Temperature
ZERO g BIAS LEVEL (RATIOMETRIC)
0 g Voltage at X
0 g Bias Repeatability −40°C ≤ TA ≤ +175°C ±10 mg
NOISE PERFORMANCE
Noise Density VS = 5 V, TA = 25°C 110 μg/√Hz rms
FREQUENCY RESPONSE
CX, CY Range
R
Tolerance 24 32 40 kΩ
FILT
6
Sensor Resonant Frequency 5.5 kHz
SELF-TEST
7
Logic Input Low 1 V
Logic Input High 4 V
ST Input Resistance to Ground 30 50 kΩ
Output Change at X
OUTPUT AMPLIFIER No load
Output Swing Low 0.05 0.2 V
Output Swing High 4.5 V
LIFESPAN
Usable Life Expectancy TA = 175°C 1000 Hours
POWER SUPPLY
Operating Voltage Range 4.75 5.25 V
Supply Current 0.7 1.5 mA
Turn-On Time
1
Minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed.
2
Guaranteed by measurement of initial offset and sensitivity.
3
Sensitivity is essentially ratiometric to VS. For VS = 4.75 V to 5.25 V, sensitivity is 186 mV/V/g to 215 mV/V/g.
4
Defined as the output change from ambient temperature to maximum temperature or from ambient temperature to minimum temperature.
5
Actual frequency response controlled by user-supplied external capacitors (CX, CY).
6
Bandwidth = 1/(2 × π × 32 kΩ × C). For CX, CY = 0.002 μF, bandwidth = 2500 Hz. For CX, CY = 10 μF, bandwidth = 0.5 Hz. Minimum/maximum values are not tested.
7
Self-test response changes cubically with VS.
8
Larger values of CX, CY increase turn-on time. Turn-on time is approximately 160 × CX or CY + 4 ms, where CX and CY are in microfarads (μF).
2
±5
3
, Y
V
OUT
OUT
, Y
V
OUT
OUT
5
0.002 10 μF
, Y
ST pin Logic 0 to Logic 1 150 250 350 mV
OUT
OUT
8
20 ms
= 5 V 296 312 328 mV/g
S
4
V
= 5 V ±0.3 %
S
= 5 V, TA = 25°C 2.5 ± 0.025 V
S
g
Rev. 0 | Page 3 of 12
ADXL206
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter Rating
Acceleration (Any Axis)
Unpowered 500 g
Powered 500 g
VS −0.3 V to +7.0 V
All Other Pins
Output Short-Circuit Duration
(COM − 0.3 V) to
+ 0.3 V)
(V
S
Indefinite
(Any Pin to Common)
Ambient Operating Temperature
Range (T
)
A
−55°C to +175°C
Storage Temperature Range −65°C to +200°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.
T
P
T
L
T
SMAX
RAMP-UP
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, for a device
soldered in a printed circuit board (PCB) for surface-mount
packages.
Table 3. Thermal Resistance
Package Type θJA θ
Unit
JC
8-Lead SBDIP 120 20 °C/W
ESD CAUTION
CRITICAL Z ONE
TO T
t
P
T
L
P
t
L
T
SMIN
TEMPERATURE
t
S
PREHEAT
TIME
25°C TO PEAK
Figure 2. Recommended Soldering Profile
RAMP-DOWN
TIME
09600-002
Table 4. Recommended Soldering Profile Limits
Profile Feature Sn63/Pb37 Pb-Free
Average Ramp Rate (TL to TP) 3°C/sec max 3°C/sec max
Preheat
Minimum Temperature (T
Maximum Temperature (T
Time (T
Ramp-Up Rate (T
SMIN
to T
), tS 60 sec to 120 sec 60 sec to 150 sec
SMAX
to TL) 3°C/sec max 3°C/sec max
SMAX
) 100°C 150°C
SMIN
) 150°C 200°C
SMAX
Time Maintained Above Liquidous (tL) 60 sec to 150 sec 60 sec to 150 sec
Liquidous Temperature (TL) 183°C 217°C
Peak Temperature (TP) 240°C + 0°C/−5°C 260°C + 0°C/−5°C
Time Within 5°C of Actual Peak Temperature (tP) 10 sec to 30 sec 20 sec to 40 sec
Ramp-Down Rate (TP to TL) 6°C/sec max 6°C/sec max
Time 25°C to Peak Temperature 6 minutes max 8 minutes max
Rev. 0 | Page 4 of 12
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