AD ADXL204EB Precisionc -1.7 g single-/dual-axis i mems accelerometer Datasheet

Precision ±1.7 g Single-/Dual-Axis
i MEMS® Accelerometer
ADXL204
FEATURES
GENERAL DESCRIPTION
High performance, dual-axis accelerometer on a
single IC chip
Specified at VS = 3.3 V
5 mm × 5 mm × 2 mm LCC package
Better than 2 mg resolution at 60 Hz
Low power: 500 μA at VS = 3.3 V (typical)
High zero g bias stability
High sensitivity accuracy
–40°C to +125°C temperature range
X-axis and Y-axis aligned to within 0.1° (typical)
BW adjustment with a single capacitor
Single-supply operation
3500 g shock survival
RoHS compliant
Compatible with Sn/Pb- and Pb-free solder processes
The ADXL204 is a high precision, low power, complete dualaxis accelerometer with signal-conditioned voltage outputs, all
on a single monolithic IC. Like the ADXL203, it measures
acceleration with a full-scale range of ±1.7 g; however, the
ADXL204 is tested and specified for 3.3 V supply voltage,
whereas the ADXL203 is tested and specified at 5 V. Both parts
function well over a wide 3 V to 6 V operating voltage range.
The ADXL204 can measure both dynamic acceleration (for
example, vibration) and static acceleration (for example, gravity).
The typical noise floor is 170 μg/√Hz, allowing signals below
2 mg (0.1° of inclination) to be resolved in tilt sensing
applications using narrow bandwidths (<60 Hz).
The user selects the bandwidth of the accelerometer using
Capacitor CX and Capacitor CY at the XOUT and YOUT pins.
Bandwidths of 0.5 Hz to 2.5 kHz can be selected to suit the
application.
APPLICATIONS
Vehicle dynamic control (VDC)/electronic stability program
(ESP) systems
Electronic chassis controls
Electronic braking
Platform stabilization/leveling
Navigation
Alarms and motion detectors
High accuracy, 2-axis tilt sensing
The ADXL204 is available in a 5 mm × 5 mm × 2 mm,
8-terminal hermetic LCC package.
FUNCTIONAL BLOCK DIAGRAM
+5V
VS
ADXL204
CDC
AC
AMP
DEMOD
OUTPUT
AMP
OUTPUT
AMP
SENSOR
COM
ST
RFILT
32kΩ
YOUT
XOUT
CY
CX
05512-001
RFILT
32kΩ
Figure 1.
Rev. A
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©2006 Analog Devices, Inc. All rights reserved.
ADXL204
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications..................................................................................... 10
Applications....................................................................................... 1
Power Supply Decoupling ......................................................... 10
General Description ......................................................................... 1
Setting the Bandwidth Using CX and CY ................................. 10
Functional Block Diagram .............................................................. 1
Self Test ........................................................................................ 10
Revision History ............................................................................... 2
Design Trade-Offs for Selecting Filter Characteristics: The
Noise/BW Trade-Off.................................................................. 10
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
Using the ADXL204 with Operating Voltages
Other than 3.3 V .......................................................................... 11
ESD Caution.................................................................................. 4
Using the ADXL204 as a Dual-Axis Tilt Sensor ........................ 11
Pin Configuration and Function Descriptions............................. 5
Outline Dimensions ....................................................................... 12
Typical Performance Characteristics ............................................. 6
Ordering Guide .......................................................................... 12
Theory of Operation ........................................................................ 9
Performance .................................................................................. 9
REVISION HISTORY
3/06—Rev. 0 to Rev. A
Changes to Format .............................................................Universal
Changes to Product Title, Features, and General Description ... 1
Changes to Table 1............................................................................ 3
Changes to Table 2............................................................................ 4
Added Figure 2 and Table 4............................................................. 4
Changes to Figure 3.......................................................................... 5
Changes to Figure 11 and Figure 14............................................... 7
Changes to Table 7.......................................................................... 10
4/05—Revision 0: Initial Version
Rev. A | Page 2 of 12
ADXL204
SPECIFICATIONS
All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed.
TA = –40°C to +125°C; VS = 3.3 V; CX = CY = 0.1 μF; acceleration = 0 g, unless otherwise noted.
Table 1.
Parameter
SENSOR INPUT
Measurement Range 1
Nonlinearity
Package Alignment Error
Alignment Error
Cross Axis Sensitivity
SENSITIVITY (RATIOMETRIC) 2
Sensitivity at XOUT, YOUT
Sensitivity Change due to Temperature 3
ZERO g BIAS LEVEL (RATIOMETRIC)
0 g Voltage at XOUT, YOUT
Initial 0 g Output Deviation from Ideal
0 g Offset vs. Temperature
NOISE PERFORMANCE
Output Noise
Noise Density
FREQUENCY RESPONSE 4
CX, CY Range 5
RFILT Tolerance
Sensor Resonant Frequency
SELF TEST 6
Logic Input Low
Logic Input High
ST Input Resistance to Ground
Output Change at XOUT, YOUT
OUTPUT AMPLIFIER
Output Swing Low
Output Swing High
POWER SUPPLY
Operating Voltage Range
Quiescent Supply Current
Turn-On Time 7
Conditions
Each axis
Min
Typ
Max
±0.2
±1
±0.1
±1.5
±1.25
±1.7
% of full scale
X sensor to Y sensor
Each axis
VS = 3.3 V
VS = 3.3 V
Each axis
VS = 3.3 V
VS = 3.3 V, 25°C
±3
Unit
g
%
Degrees
Degrees
%
595
620
±0.3
645
mV/g
%
1.55
1.65
±50
±0.15
1.75
V
mg
mg/°C
1
170
3
mV rms
μg/√Hz rms
10
40
μF
kΩ
kHz
0.66
<4 kHz, VS = 3.3 V
0.002
24
32
5.5
±0.8
T
Self test 0 to 1
No load
No load
2.64
30
100
0.05
50
200
300
V
V
kΩ
mV
0.2
2.9
3.1
V
V
3
0.5
20
1
6
0.9
V
mA
ms
Guaranteed by measurement of initial offset and sensitivity.
Sensitivity is essentially ratiometric to VS. For VS = 3.0 V to 3.6 V, sensitivity is typically 185 mV/V/g to 190 mV/V/g.
3
Defined as the change from ambient-to-maximum temperature or ambient-to-minimum temperature.
4
Actual frequency response controlled by user-supplied external capacitor (CX, CY).
5
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.
6
Self-test response changes cubically with VS.
7
Larger values of CX, CY increase turn-on time. Turn-on time is approximately 160 × CX or CY + 4 ms, where CX, CY are in μF.
2
Rev. A | Page 3 of 12
ADXL204
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
Acceleration (Any Axis, Unpowered)
Acceleration (Any Axis, Powered)
Drop Test (Concrete Surface)
VS
All Other Pins
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.
Rating
3500 g
3500 g
1.2 m
−0.3 V to +7.0 V
(COM − 0.3 V) to
(VS + 0.3 V)
Indefinite
Output Short-Circuit Duration
(Any Pin to Common)
Temperature Range (Powered)
Temperature Range (Storage)
Table 3. Package Characteristics
Package Type
8-Terminal LCC
−55°C to +125°C
−65°C to +150°C
θJC
20°C/W
Device Weight
<1.0 gram
CRITICAL ZONE
TL TO TP
tP
TP
θJA
120°C/W
TEMPERATURE
RAMP-UP
TL
tL
TSMAX
TSMIN
tS
RAMP-DOWN
05512-002
PREHEAT
t25°C TO PEAK
TIME
Figure 2. Recommended Soldering Profile
Table 4.
Profile Feature
AVERAGE RAMP RATE (TL TO TP)
PREHEAT
Minimum Temperature (TSMIN)
Minimum Temperature (TSMAX)
Time (TSMIN to TSMAX) (tS)
TSMAX TO TL
Ramp-Up Rate
TIME MAINTAINED ABOVE LIQUIDOUS (TL)
Liquidous Temperature (TL)
Time (tL)
PEAK TEMPERATURE (TP)
TIME WITHIN 5°C OF ACTUAL PEAK TEMPERATURE (tP)
RAMP-DOWN RATE
TIME 25°C TO PEAK TEMPERATURE
Sn63/Pb37
3°C/sec maximum
Condition
Pb-Free
3°C/sec maximum
100°C
150°C
60 sec to 120 sec
150°C
200°C
60 sec to 150 sec
3°C/sec
3°C/sec
183°C
60 sec to 150 sec
240°C +0°C/–5°C
10 sec to 30 sec
6°C/sec maximum
6 minutes maximum
217°C
60 sec to 150 sec
260°C +0°C/–5°C
20 sec to 40 sec
6°C/sec maximum
8 minutes maximum
ESD 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 this product 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.
Rev. A | Page 4 of 12
ADXL204
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
ADXL204E
TOP VIEW
(Not to Scale)
VS
7
XOUT
DNC 2
6
YOUT
5
DNC
COM 3
+Y
+X
4
DNC
05512-022
8
ST 1
Figure 3. Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
Mnemonic
ST
DNC
COM
DNC
DNC
YOUT
XOUT
VS
Description
Self Test
Do Not Connect
Common
Do Not Connect
Do Not Connect
Y Channel Output
X Channel Output
3 V to 6 V
Rev. A | Page 5 of 12
0.655
0.649
0.644
0.638
0.633
0.627
0.621
10
Figure 6. X-Axis Sensitivity at 25°C
V/g
Rev. A | Page 6 of 12
05512-008
0
Figure 9. Y-Axis Sensitivity at 25°C
V/g
0.655
10
0.649
20
0.644
30
0.638
50
0.633
60
0.627
mg/°C
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
05512-007
0
0.621
Figure 5. X-Axis Zero g Bias Temperature Coefficient
–0.1
5
0.616
VOLTS (V)
0.610
10
–0.2
15
–0.3
20
0.605
20
–0.4
25
0.599
Figure 4. X-Axis Zero g Bias Output at 25°C
0.594
1.749
1.727
1.705
1.683
1.661
1.639
1.617
1.595
5
05512-006
0
1.573
10
–0.5
15
–0.6
20
0.588
30
1.551
25
PERCENT OF POPULATION (%)
30
0.583
05512-003
35
–0.7
25
PERCENT OF POPULATION (%)
1.749
5
–0.8
05512-004
1.727
1.705
1.683
1.661
1.639
1.617
1.595
1.573
1.551
PERCENT OF POPULATION (%)
35
0.577
40
PERCENT OF POPULATION (%)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
0
0.616
0.610
0.605
0.599
0.594
0.588
0.583
05512-005
0
–0.7
–0.8
PERCENT OF POPULATION (%)
0
0.577
PERCENT OF POPULATION (%)
ADXL204
TYPICAL PERFORMANCE CHARACTERISTICS
VS = 3.3 V for all graphs, unless otherwise noted.
25
20
15
10
Figure 7. Y-Axis Zero g Bias Output at 25°C
VOLTS (V)
15
10
5
Figure 8. Y-Axis Zero g Bias Temperature Coefficient
mg/°C
70
60
50
40
30
20
ADXL204
1.710
0.65
1.698
0.64
1.686
0.63
SENSITIVITY (V/g)
1.662
1.650
1.638
1.626
0.62
0.61
1.614
45
50
40
45
30
25
20
15
10
05512-010
0
170
180
190
200
130
140
150
160
PERCENT OF POPULATION (%)
30
25
20
15
10
130
120
110
90
80
100
200
210
30
25
20
15
10
PERCENT SENSITIVITY (%)
05512-014
PERCENT SENSITIVITY (%)
Figure 12. Z vs. X Cross-Axis Sensitivity
Figure 15. Z vs. Y Cross-Axis Sensitivity
Rev. A | Page 7 of 12
5.0
–1.0
–2.0
–3.0
–4.0
–5.0
0
5.0
4.0
3.0
2.0
1.0
0
190
5
05512-011
5
–1.0
180
Figure 14. Y-Axis Noise Density at 25°C
35
–2.0
170
µg/ Hz
35
–3.0
70
05512-012
120
40
–4.0
60
0
210
40
–5.0
50
5
Figure 11. X-Axis Noise Density at 25°C
PERCENT OF POPULATION (%)
40
10
µg/ Hz
0
30
20
0
–10
–20
15
4.0
160
20
3.0
150
25
2.0
140
30
1.0
130
34
0
120
40
05512-013
34
5
TEMPERATURE (°C)
Figure 13. Sensitivity vs. Temperature—Parts Soldered to PCB
PERCENT OF POPULATION (%)
PERCENT OF POPULATION (%)
Figure 10. Zero g Bias vs. Temperature—Parts Soldered to PCB
–30
–50
0.58
130
120
110
90
TEMPERATURE (°C)
100
80
70
60
50
40
30
20
0
10
–10
–20
–30
–40
–50
1.590
10
05512-009
0.60
1.602
–40
VOLTAGE (1V/g)
1.674
ADXL204
0.9
100
90
PERCENT OF POPULATION (%)
VS = 5V
0.6
0.5
VS = 3V
05512-015
0.4
30
20
10
1000
900
800
700
0
150
600
100
40
500
50
TEMPERATURE (°C)
50
400
0
60
200
0.3
–50
3V
70
300
CURRENT (mA)
0.7
5V
80
05512-018
0.8
(µA)
Figure 19. Supply Current at 25°C
Figure 16. Supply Current vs. Temperature
30
35
PERCENT OF POPULATION (%)
25
20
15
10
15
10
05512-019
0.269
0.256
0.242
0.229
0.216
0.202
0.189
0.175
0.162
0.148
0
0.269
0.256
0.242
0.229
0.216
0.202
0.189
0.175
0.162
0.148
0.135
0
20
5
05512-016
5
25
0.135
PERCENT OF POPULATION (%)
30
VOLTS (V)
VOLTS (V)
Figure 20. Y-Axis Self-Test Response at 25°C
Figure 17. X-Axis Self-Test Response at 25°C
0.32
0.29
0.23
0.20
0.17
0.14
05512-020
130
120
110
90
100
TEMPERATURE (°C)
80
70
60
50
40
30
20
10
–10
–20
–30
–50
0.08
0
05512-017
0.11
–40
VOLTAGE (1V/g)
0.26
Figure 18. Self-Test Response vs. Temperature
Figure 21. Turn-On Time—CX, CY = 0.1 μF, Time Scale = 2 ms/DIV
Rev. A | Page 8 of 12
ADXL204
THEORY OF OPERATION
PIN 8
XOUT = 1.03V
YOUT = 1.65V
PIN 8
XOUT = 1.65V
YOUT = 1.03V
TOP VIEW
(Not to Scale)
XOUT = 1.65V
YOUT = 1.65V
PIN 8
XOUT = 2.27V
YOUT = 1.65V
EARTH'S SURFACE
05512-021
PIN 8
XOUT = 1.65V
YOUT = 2.27V
Figure 22. Output Response vs. Orientation
The ADXL204 is a complete acceleration measurement system on
a single monolithic IC. The ADXL204 is a dual-axis accelerometer.
It contains a polysilicon surface-micromachined sensor and
signal conditioning circuitry to implement an open-loop
acceleration measurement architecture. The output signals are
analog voltages proportional to acceleration. The ADXL204 is
capable of measuring both positive and negative accelerations to
at least ±1.7 g. The accelerometer can measure static acceleration
forces, such as gravity, allowing it to be used as a tilt sensor.
The sensor is a surface-micromachined polysilicon structure
built on top of the silicon wafer. Polysilicon springs suspend the
structure over the surface of the wafer and provide a resistance
against acceleration forces. Deflection of the structure is measured
using a differential capacitor that consists of independent fixed
plates and plates attached to the moving mass. The fixed plates
are driven by 180° out-of-phase square waves. Acceleration
deflects the beam and unbalances the differential capacitor,
resulting in an output square wave whose amplitude is
proportional to acceleration. Phase-sensitive demodulation
techniques are then used to rectify the signal and determine
the direction of the acceleration.
PERFORMANCE
Rather than using additional temperature compensation
circuitry, innovative design techniques have been used to ensure
high performance is built in. As a result, there is essentially no
quantization error or nonmonotonic behavior, and temperature
hysteresis is very low, typically less than 10 mg over the –40°C
to +125°C temperature range.
Figure 10 shows the zero g output performance of eight parts
(X-axis and Y-axis) over a –40°C to +125°C temperature range.
Figure 13 demonstrates the typical sensitivity shift over temperature for VS = 3.3 V. Sensitivity stability is typically better
than ±1% over temperature.
The output of the demodulator is amplified and brought offchip through a 32 kΩ resistor. At this point, the user can set the
signal bandwidth of the device by adding a capacitor. This filtering
improves measurement resolution and helps prevent aliasing.
Rev. A | Page 9 of 12
ADXL204
APPLICATIONS
POWER SUPPLY DECOUPLING
For most applications, a single 0.1 μF capacitor, CDC, adequately
decouples the accelerometer from noise on the power supply.
However in some cases, particularly where noise is present at
the 140 kHz internal clock frequency (or any harmonic thereof),
noise on the supply can cause interference on the ADXL204
output. If additional decoupling is needed, a 100 Ω, or smaller,
resistor or ferrite bead can be inserted in the supply line of the
ADXL204. Additionally, a larger bulk bypass capacitor, in the
1 μF to 22 μF range, can be added in parallel to CDC.
SETTING THE BANDWIDTH USING CX AND CY
The ADXL204 has provisions for bandlimiting the XOUT and
YOUT pins. Capacitors must be added at these pins to implement
low-pass filtering for antialiasing and noise reduction. The
equation for the 3 dB bandwidth is
F–3 dB = 1/(2π(32 kΩ) × C(X, Y))
or more simply,
F–3 dB = 5 μF/C(X, Y)
The tolerance of the internal resistor (RFILT) can vary typically as
much as ±25% of its nominal value (32 kΩ); thus, the bandwidth varies accordingly. A minimum capacitance of 2000 pF
for CX and CY is required in all cases.
Table 6. Filter Capacitor Selection, CX and CY
Bandwidth (Hz)
1
10
50
100
200
500
DESIGN TRADE-OFFS FOR SELECTING FILTER
CHARACTERISTICS: THE NOISE/BW TRADE-OFF
The accelerometer bandwidth selected ultimately determines
the measurement resolution (smallest detectable acceleration).
Filtering can be used to lower the noise floor, which improves
the resolution of the accelerometer. Resolution is dependent on
the analog filter bandwidth at XOUT and YOUT.
The output of the ADXL204 has a typical bandwidth of 2.5 kHz.
The user must filter the signal at this point to limit aliasing
errors. The analog bandwidth must be no more than half the
A/D sampling frequency to minimize aliasing. The analog
bandwidth can be further decreased to reduce noise and
improve resolution.
The ADXL204 noise has the characteristics of white Gaussian
noise, which contributes equally at all frequencies and is
described in terms of μg/√Hz (that is, the noise is proportional
to the square root of the accelerometer’s bandwidth). The user
should limit bandwidth to the lowest frequency needed by the
application to maximize the resolution and dynamic range of
the accelerometer.
With the single-pole, roll-off characteristic, the typical noise of
the ADXL204 is determined by
rmsNoise = (170 μg/√Hz) × (√BW×1.6)
At 100 Hz the noise is
Capacitor (μF)
4.7
0.47
0.10
0.05
0.027
0.01
rmsNoise = (170 μg/√Hz) × (√BW×1.6) = 2.15 mg
Often, the peak value of the noise is desired. Peak-to-peak noise
can only be estimated by statistical methods. Table 7 is useful
for estimating the probabilities of exceeding various peak
values, given the rms value.
Table 7. Estimation of Peak-to-Peak Noise
SELF TEST
The ST pin controls the self-test feature. When this pin is set to
VS, an electrostatic force is exerted on the beam of the accelerometer. The resulting movement of the beam allows the user to
test if the accelerometer is functional. The typical change in
output is 325 mg (corresponding to 200 mV). This pin can be
left open-circuit or connected to common in normal use.
Peak-to-Peak Value
2 × rms
4 × rms
6 × rms
8 × rms
The ST pin should never be exposed to voltage greater than
VS + 0.3 V. If the system design is such that this condition
cannot be guaranteed (that is, multiple supply voltages present),
a low VF clamping diode between ST and VS is recommended.
Rev. A | Page 10 of 12
% of Time Noise Exceeds
Nominal Peak-to-Peak Value
32
4.6
0.27
0.006
ADXL204
Peak-to-peak noise values give the best estimate of the uncertainty
in a single measurement and is estimated by 6 × rms. Table 8
gives the typical noise output of the ADXL204 for various CX
and CY values.
Table 8. Filter Capacitor Selection (CX, CY)
Bandwidth(Hz)
10
50
100
500
CX, CY
(μF)
0.47
0.1
0.047
0.01
RMS Noise
(mg)
0.7
1.5
2.2
4.8
Peak-to-Peak Noise
Estimate (mg)
4.1
9.1
12.9
28.8
USING THE ADXL204 WITH OPERATING VOLTAGES
OTHER THAN 3.3 V
The ADXL204 is tested and specified at VS = 3.3 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 ADXL204 output is ratiometric, so the output sensitivity, or
scale factor, varies proportionally to supply voltage. At VS = 3 V,
the output sensitivity is typically 560 mV/g. At VS = 5 V, the
output sensitivity is typically 1000 mV/g.
USING THE ADXL204 AS A DUAL-AXIS TILT SENSOR
One of the most popular applications of the ADXL204 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, its sensitivity to changes
in tilt is highest. When the accelerometer is oriented on axis 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 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. Once 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:
PITCH = ASIN(AX/1 g)
The zero g bias output is also ratiometric, so 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. This is because the scale factor (mV/g) increases
while the noise voltage remains constant. At VS = 3 V, the noise
density is typically 190 μg/√Hz. At VS = 5 V, the noise density is
typically 110 μg/√Hz.
ROLL = ASIN(AY/1 g)
Be sure to account for overranges. It is possible for the
accelerometers to output a signal greater than ±1 g due to
vibration, shock, or other accelerations.
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. This
means at VS = 3 V, the self-test response is approximately
equivalent to 150 mV, or equivalent to 270 mg (typical). At
VS = 5 V, the self-test response is approximately equivalent to
750 mV, or equivalent to 750 mg (typical).
The supply current decreases as the supply voltage decreases.
Typical current consumption at VDD = 5 V is 750 μA.
Rev. A | Page 11 of 12
ADXL204
OUTLINE DIMENSIONS
5.00
SQ
1.27
1.78
1.27
4.50
SQ
7
0.50 DIAMETER
1
1.90
2.50
TOP VIEW
1.27
0.20
R 0.38
R 0.20
5
3
0.64 2.50
0.38 DIAMETER
BOTTOM VIEW
Figure 23. 8-Terminal Ceramic Leadless Chip Carrier [LCC]
(E-8)
Dimensions shown in millimeters
ORDERING GUIDE
Model
ADXL204CE
ADXL204CE-REEL
ADXL204EB
Number of Axes
2
2
Specified
Voltage (V)
3.3
3.3
Temperature Range
–40°C to +125°C
–40°C to +125°C
Package Description
8-Terminal Ceramic Leadless Chip Carrier (LCC)
8-Terminal Ceramic Leadless Chip Carrier (LCC)
Evaluation Board
Package
Option
E-8
E-8
©2006 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05512-0-3/06(A)
T
T
Rev. A | Page 12 of 12
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