ADXL335BCPZ-RL7 [ADI]
Small, Low Power, Accelerometer; 小尺寸，低功耗，加速计
| 型号： | ADXL335BCPZ-RL7 |
| 厂家： | 
ADI |
| 描述： | Small, Low Power, Accelerometer |
| 文件： | 总16页 (文件大小：430K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Small, Low Power, 3-Axis 3 g
Accelerometer
ADXL335
FEATURES
GENERAL DESCRIPTION
3-axis sensing
Small, low profile package
4 mm × 4 mm × 1.45 mm LFCSP
Low power : 350 μA (typical)
Single-supply operation: 1.8 V to 3.6 V
10,000 g shock survival
The ADXL335 is a small, thin, low power, complete 3-axis accel-
erometer with signal conditioned voltage outputs. The product
measures acceleration with a minimum full-scale range of 3 g.
It can measure the static acceleration of gravity in tilt-sensing
applications, as well as dynamic acceleration resulting from
motion, shock, or vibration.
Excellent temperature stability
BW adjustment with a single capacitor per axis
RoHS/WEEE lead-free compliant
The user selects the bandwidth of the accelerometer using the
CX, CY, and CZ capacitors at the XOUT, YOUT, and ZOUT pins.
Bandwidths can be selected to suit the application, with a
range of 0.5 Hz to 1600 Hz for the X and Y axes, and a range
of 0.5 Hz to 550 Hz for the Z axis.
APPLICATIONS
Cost sensitive, low power, motion- and tilt-sensing
applications
Mobile devices
The ADXL335 is available in a small, low profile, 4 mm ×
4 mm × 1.45 mm, 16-lead, plastic lead frame chip scale package
(LFCSP_LQ).
Gaming systems
Disk drive protection
Image stabilization
Sports and health devices
FUNCTIONAL BLOCK DIAGRAM
+3V
V
S
X
ADXL335
~32kΩ
~32kΩ
~32kΩ
OUT
OUTPUT AMP
OUTPUT AMP
OUTPUT AMP
C
X
Y
Z
3-AXIS
SENSOR
Y
Z
OUT
C
AC AMP
DEMOD
DC
C
OUT
C
COM
ST
Figure 1.
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 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 registeredtrademarks arethe 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: 781.461.3113 ©2009–2010 Analog Devices, Inc. All rights reserved.
ADXL335
TABLE OF CONTENTS
Features .............................................................................................. 1
Performance................................................................................ 10
Applications Information.............................................................. 11
Power Supply Decoupling ......................................................... 11
Setting the Bandwidth Using CX, CY, and CZ .......................... 11
Self-Test ....................................................................................... 11
Applications....................................................................................... 1
General Description......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions............................. 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ...................................................................... 10
Mechanical Sensor...................................................................... 10
Design Trade-Offs for Selecting Filter Characteristics: The
Noise/BW Trade-Off.................................................................. 11
Use with Operating Voltages Other Than 3 V ........................... 12
Axes of Acceleration Sensitivity ............................................... 12
Layout and Design Recommendations ................................... 13
Outline Dimensions....................................................................... 14
Ordering Guide .......................................................................... 14
REVISION HISTORY
1/10—Rev. A to Rev. B
Changes to Figure 21........................................................................ 9
7/09—Rev. 0 to Rev. A
Changes to Figure 22........................................................................ 9
Changes to Outline Dimensions................................................... 14
1/09—Revision 0: Initial Version
Rev. B | Page 2 of 16
ADXL335
SPECIFICATIONS
TA = 25°C, VS = 3 V, CX = CY = CZ = 0.1 μF, acceleration = 0 g, unless otherwise noted. All minimum and maximum specifications are
guaranteed. Typical specifications are not guaranteed.
Table 1.
Parameter
Conditions
Min
Typ
Max
Unit
SENSOR INPUT
Each axis
Measurement Range
±3
±3.6
±±.3
±1
±±.1
±1
g
Nonlinearity
% of full scale
%
Package Alignment Error
Interaxis Alignment Error
Cross-Axis Sensitivity1
SENSITIVITY (RATIOMETRIC)2
Sensitivity at XOUT, YOUT, ZOUT
Sensitivity Change Due to Temperature3
ZERO g BIAS LEVEL (RATIOMETRIC)
± g Voltage at XOUT, YOUT
± g Voltage at ZOUT
± g Offset vs. Temperature
NOISE PERFORMANCE
Noise Density XOUT, YOUT
Noise Density ZOUT
Degrees
Degrees
%
Each axis
VS = 3 V
VS = 3 V
27±
3±±
±±.±1
33±
mV/g
%/°C
VS = 3 V
VS = 3 V
1.35
1.2
1.5
1.5
±1
1.65
1.8
V
V
mg/°C
15±
3±±
μg/√Hz rms
μg/√Hz rms
FREQUENCY RESPONSE4
5
Bandwidth XOUT, YOUT
No external filter
No external filter
16±±
55±
Hz
5
Bandwidth ZOUT
Hz
RFILT Tolerance
Sensor Resonant Frequency
SELF-TEST6
32 ± 15%
5.5
kΩ
kHz
Logic Input Low
Logic Input High
+±.6
+2.4
+6±
−325
+325
+55±
V
V
ST Actuation Current
Output Change at XOUT
Output Change at YOUT
Output Change at ZOUT
OUTPUT AMPLIFIER
Output Swing Low
Output Swing High
POWER SUPPLY
ꢀA
mV
mV
Self-Test ± to Self-Test 1
Self-Test ± to Self-Test 1
Self-Test ± to Self-Test 1
−15±
+15±
+15±
−6±±
+6±±
+1±±± mV
No load
No load
±.1
2.8
V
V
Operating Voltage Range
1.8
3.6
V
Supply Current
Turn-On Time7
VS = 3 V
35±
1
ꢀA
ms
No external filter
TEMPERATURE
Operating Temperature Range
−4±
+85
°C
1 Defined as coupling between any two axes.
2 Sensitivity is essentially ratiometric to VS.
3 Defined as the output change from ambient-to-maximum temperature or ambient-to-minimum temperature.
4 Actual frequency response controlled by user-supplied external filter capacitors (CX, CY, CZ).
5 Bandwidth with external capacitors = 1/(2 × π × 32 kΩ × C). For CX, CY = ±.±±3 μF, bandwidth = 1.6 kHz. For CZ = ±.±1 μF, bandwidth = 5±± Hz. For CX, CY, CZ = 1± μF,
bandwidth = ±.5 Hz.
6 Self-test response changes cubically with VS.
7 Turn-on time is dependent on CX, CY, CZ and is approximately 16± × CX or CY or CZ + 1 ms, where CX, CY, CZ are in microfarads (μF).
Rev. B | Page 3 of 16
ADXL335
ABSOLUTE MAXIMUM RATINGS
Table 2.
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.
Parameter
Rating
Acceleration (Any Axis, Unpowered)
1±,±±± g
Acceleration (Any Axis, Powered)
1±,±±± g
VS
−±.3 V to +3.6 V
(COM − ±.3 V) to (VS + ±.3 V)
Indefinite
All Other Pins
Output Short-Circuit Duration
(Any Pin to Common)
Temperature Range (Powered)
Temperature Range (Storage)
−55°C to +125°C
−65°C to +15±°C
ESD CAUTION
Rev. B | Page 4 of 16
ADXL335
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
16
15
14
13
ADXL335
1
2
3
4
12
NC
ST
X
OUT
TOP VIEW
(Not to Scale)
11
10
NC
Y
+Y
COM
NC
+Z
+X
OUT
9
NC
5
6
7
8
NC = NO CONNECT
NOTES
1. EXPOSED PAD IS NOT INTERNALLY
CONNECTED BUT SHOULD BE SOLDERED
FOR MECHANICAL INTEGRITY.
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
Mnemonic
Description
No Connect.1
1
NC
2
ST
Self-Test.
3
4
COM
NC
Common.
No Connect.1
5
6
7
8
COM
COM
COM
ZOUT
Common.
Common.
Common.
Z Channel Output.
No Connect.1
9
NC
1±
11
12
13
14
15
16
EP
YOUT
NC
XOUT
NC
VS
Y Channel Output.
No Connect. 1
X Channel Output.
No Connect. 1
Supply Voltage (1.8 V to 3.6 V).
Supply Voltage (1.8 V to 3.6 V).
No Connect. 1
VS
NC
Exposed Pad
Not internally connected. Solder for mechanical integrity.
1 NC pins are not internally connected and can be tied to COM pins, unless otherwise noted.
Rev. B | Page 5 of 16
ADXL335
TYPICAL PERFORMANCE CHARACTERISTICS
N > 1000 for all typical performance plots, unless otherwise noted.
40
30
20
10
0
50
40
30
20
10
0
–0.40
–0.38
–0.36
–0.34
–0.32
–0.30
–0.28
–0.26
1.42
1.44
1.46
1.48
1.50
1.52
1.54
1.56
1.58
VOLTS (V)
OUTPUT (V)
Figure 6. X-Axis Self-Test Response at 25°C, VS = 3 V
Figure 3. X-Axis Zero g Bias at 25°C, VS = 3 V
50
40
30
20
10
0
50
40
30
20
10
0
1.42
1.44
1.46
1.48
1.50
1.52
1.54
1.56
1.58
0.26
0.28
0.30
0.32
0.34
0.36
0.38
0.40
OUTPUT (V)
VOLTS (V)
Figure 4. Y-Axis Zero g Bias at 25°C, VS = 3 V
Figure 7. Y-Axis Self-Test Response at 25°C, VS = 3 V
25
20
15
10
5
40
30
20
10
0
0
1.42
1.44
1.46
1.48
1.50
1.52
1.54
1.56
1.58
0.48
0.50
0.52
0.54
0.56
0.58
0.60
0.62
OUTPUT (V)
VOLTS (V)
Figure 5. Z-Axis Zero g Bias at 25°C, VS = 3 V
Figure 8. Z-Axis Self-Test Response at 25°C, VS = 3 V
Rev. B | Page 6 of 16
ADXL335
30
25
20
15
10
5
1.55
1.54
1.53
1.52
1.51
1.50
1.49
1.48
1.47
1.46
1.45
N = 8
0
–3.0 –2.5 –2.0 –1.5 –1.0 –0.5
0
0.5 1.0 1.5 2.0 2.5 3.0
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
TEMPERATURE COEFFICIENT (mg/°C)
Figure 9. X-Axis Zero g Bias Temperature Coefficient, VS = 3 V
Figure 12. X-Axis Zero g Bias vs. Temperature—
Eight Parts Soldered to PCB
1.55
1.54
1.53
1.52
1.51
1.50
1.49
1.48
1.47
1.46
1.45
40
N = 8
30
20
10
0
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
–3.0 –2.5 –2.0 –1.5 –1.0 –0.5
0
0.5 1.0 1.5 2.0 2.5 3.0
TEMPERATURE COEFFICIENT (mg/°C)
Figure 10. Y-Axis Zero g Bias Temperature Coefficient, VS = 3 V
Figure 13. Y-Axis Zero g Bias vs. Temperature—
Eight Parts Soldered to PCB
20
15
10
5
1.50
1.48
1.46
1.44
1.42
1.40
1.38
1.36
1.34
1.32
1.30
N = 8
0
–7 –6 –5 –4 –3 –2 –1
0
1
2
3
4
5
6
7
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
TEMPERATURE COEFFICIENT (mg/°C)
Figure 14. Z-Axis Zero g Bias vs. Temperature—
Figure 11. Z-Axis Zero g Bias Temperature Coefficient, VS = 3 V
Eight Parts Soldered to PCB
Rev. B | Page 7 of 16
ADXL335
20
0.320
0.315
0.310
0.305
0.300
0.295
0.290
0.285
0.280
N = 8
15
10
5
0
0.285 0.288 0.291 0.294 0.297 0.300 0.303 0.306 0.309 0.312 0.315
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
SENSITIVITY (V/g)
Figure 15. X-Axis Sensitivity at 25°C, VS = 3 V
Figure 18. X-Axis Sensitivity vs. Temperature—
Eight Parts Soldered to PCB, VS = 3 V
0.320
0.315
0.310
0.305
0.300
0.295
0.290
0.285
0.280
25
20
15
10
5
N = 8
0
0.285 0.288 0.291 0.294 0.297 0.300 0.303 0.306 0.309 0.312 0.315
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
SENSITIVITY (V/g)
Figure 19. Y-Axis Sensitivity vs. Temperature—
Eight Parts Soldered to PCB, VS = 3 V
Figure 16. Y-Axis Sensitivity at 25°C, VS = 3 V
25
0.320
0.315
0.310
0.305
0.300
0.295
0.290
0.285
0.280
N = 8
20
15
10
5
0
0.285 0.288 0.291 0.294 0.297 0.300 0.303 0.306 0.309 0.312 0.315
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
SENSITIVITY (V/g)
Figure 20. Z-Axis Sensitivity vs. Temperature—
Eight Parts Soldered to PCB, VS = 3 V
Figure 17. Z-Axis Sensitivity at 25°C, VS = 3 V
Rev. B | Page 8 of 16
ADXL335
350
300
250
200
C
= C = C = 0.0047µF
X
Y
Z
CH4: Z
500mV/DIV
,
OUT
CH3: Y
,
OUT
500mV/DIV
150
100
CH2: X
,
OUT
500mV/DIV
CH1: POWER,
1V/DIV
50
0
OUTPUTS ARE OFFSET FOR CLARITY
TIME (1ms/DIV)
1.5
2.0
2.5
3.0
3.5
4.0
SUPPLY (V)
Figure 21. Typical Current Consumption vs. Supply Voltage
Figure 22. Typical Turn-On Time, VS = 3 V
Rev. B | Page 9 of 16
ADXL335
THEORY OF OPERATION
The ADXL335 is a complete 3-axis acceleration measurement
system. The ADXL335 has a measurement range of 3 g mini-
mum. 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 that are proportional to acceleration. The
accelerometer can measure the static acceleration of gravity
in tilt-sensing applications as well as dynamic acceleration
resulting from motion, shock, or vibration.
The demodulator output is amplified and brought off-chip
through a 32 kΩ resistor. The user then sets the signal
bandwidth of the device by adding a capacitor. This filtering
improves measurement resolution and helps prevent aliasing.
MECHANICAL SENSOR
The ADXL335 uses a single structure for sensing the X, Y, and
Z axes. As a result, the three axes’ sense directions are highly
orthogonal and have little cross-axis sensitivity. Mechanical
misalignment of the sensor die to the package is the chief
source of cross-axis sensitivity. Mechanical misalignment
can, of course, be calibrated out at the system level.
The sensor is a polysilicon surface-micromachined structure
built on top of a 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 meas-
ured 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 moving mass and unbalances the differential capacitor
resulting in a sensor output whose amplitude is proportional to
acceleration. Phase-sensitive demodulation techniques are then
used to determine the magnitude and direction of the
acceleration.
PERFORMANCE
Rather than using additional temperature compensation circui-
try, innovative design techniques ensure that high performance
is built in to the ADXL335. As a result, there is no quantization
error or nonmonotonic behavior, and temperature hysteresis
is very low (typically less than 3 mg over the −25°C to +70°C
temperature range).
Rev. B | Page 1± of 16
ADXL335
APPLICATIONS INFORMATION
Never expose the ST pin to voltages greater than VS + 0.3 V.
POWER SUPPLY DECOUPLING
If this cannot be guaranteed due to the system design (for
instance, if there are multiple supply voltages), then a low
VF clamping diode between ST and VS is recommended.
For most applications, a single 0.1 μF capacitor, CDC, placed
close to the ADXL335 supply pins adequately decouples the
accelerometer from noise on the power supply. However, in
applications where noise is present at the 50 kHz internal clock
frequency (or any harmonic thereof), additional care in power
supply bypassing is required because this noise can cause errors
in acceleration measurement.
DESIGN TRADE-OFFS FOR SELECTING FILTER
CHARACTERISTICS: THE NOISE/BW TRADE-OFF
The selected accelerometer bandwidth ultimately determines
the measurement resolution (smallest detectable acceleration).
Filtering can be used to lower the noise floor to improve the
resolution of the accelerometer. Resolution is dependent on
If additional decoupling is needed, a 100 Ω (or smaller) resistor
or ferrite bead can be inserted in the supply line. Additionally, a
larger bulk bypass capacitor (1 μF or greater) can be added in
parallel to CDC. Ensure that the connection from the ADXL335
ground to the power supply ground is low impedance because
noise transmitted through ground has a similar effect to noise
transmitted through VS.
the analog filter bandwidth at XOUT, YOUT, and ZOUT
.
The output of the ADXL335 has a typical bandwidth of greater
than 500 Hz. The user must filter the signal at this point to
limit aliasing errors. The analog bandwidth must be no more
than half the analog-to-digital sampling frequency to minimize
aliasing. The analog bandwidth can be further decreased to
reduce noise and improve resolution.
SETTING THE BANDWIDTH USING CX, CY, AND CZ
The ADXL335 has provisions for band limiting the XOUT, YOUT
,
The ADXL335 noise has the characteristics of white Gaussian
noise, which contributes equally at all frequencies and is
described in terms of ꢀg/√Hz (the noise is proportional to the
square root of the accelerometer bandwidth). The user should
limit bandwidth to the lowest frequency needed by the applica-
tion to maximize the resolution and dynamic range of the
accelerometer.
and ZOUT pins. Capacitors must be added at these pins to imple-
ment 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, Z)
or more simply
–3 dB = 5 ꢀF/C(X, Y, Z)
)
F
With the single-pole, roll-off characteristic, the typical noise of
the ADXL335 is determined by
The tolerance of the internal resistor (RFILT) typically varies as
much as 15% of its nominal value (32 kΩ), and the bandwidth
varies accordingly. A minimum capacitance of 0.0047 ꢀF for CX,
CY, and CZ is recommended in all cases.
rms Noise = Noise Density ×( BW ×1.6)
It is often useful to know the peak value of the noise. Peak-to-
peak noise can only be estimated by statistical methods. Table 5
is useful for estimating the probabilities of exceeding various
peak values, given the rms value.
Table 4. Filter Capacitor Selection, CX, CY, and CZ
Bandwidth (Hz)
Capacitor (μF)
1
4.7
1±
5±
1±±
2±±
5±±
±.47
±.1±
±.±5
±.±27
±.±1
Table 5. Estimation of Peak-to-Peak Noise
% of Time That Noise Exceeds
Peak-to-Peak Value
2 × rms
Nominal Peak-to-Peak Value
32
4 × rms
4.6
6 × rms
8 × rms
±.27
±.±±6
SELF-TEST
The ST pin controls the self-test feature. When this pin is set to
VS, an electrostatic force is exerted on the accelerometer beam.
The resulting movement of the beam allows the user to test if
the accelerometer is functional. The typical change in output
is −1.08 g (corresponding to −325 mV) in the X-axis, +1.08 g
(or +325 mV) on the Y-axis, and +1.83 g (or +550 mV) on the
Z-axis. This ST pin can be left open-circuit or connected to
common (COM) in normal use.
Rev. B | Page 11 of 16
ADXL335
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, the self-test response in volts
is roughly proportional to the cube of the supply voltage. For
example, at VS = 3.6 V, the self-test response for the ADXL335
is approximately −560 mV for the X-axis, +560 mV for the
Y-axis, and +950 mV for the Z-axis.
USE WITH OPERATING VOLTAGES OTHER THAN 3 V
The ADXL335 is tested and specified at VS = 3 V; however, it
can be powered with VS as low as 1.8 V or as high as 3.6 V. Note
that some performance parameters change as the supply voltage
is varied.
The ADXL335 output is ratiometric, therefore, the output
sensitivity (or scale factor) varies proportionally to the
supply voltage. At VS = 3.6 V, the output sensitivity is typi-
cally 360 mV/g. At VS = 2 V, the output sensitivity is typically
195 mV/g.
At VS = 2 V, the self-test response is approximately −96 mV for
the X-axis, +96 mV for the Y-axis, and −163 mV for the Z-axis.
The supply current decreases as the supply voltage decreases.
Typical current consumption at VS = 3.6 V is 375 μA, and typi-
cal current consumption at VS = 2 V is 200 μA.
The zero g bias output is also ratiometric, thus the zero g
output is nominally equal to VS/2 at all supply voltages.
AXES OF ACCELERATION SENSITIVITY
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 = 3.6 V,
the X-axis and Y-axis noise density is typically 120 μg/√Hz,
whereas at VS = 2 V, the X-axis and Y-axis noise density is
typically 270 ꢀg/√Hz.
A
Z
A
Y
A
X
Figure 23. Axes of Acceleration Sensitivity; Corresponding Output Voltage
Increases When Accelerated Along the Sensitive Axis.
X
Y
Z
= –1g
= 0g
= 0g
OUT
OUT
OUT
TOP
GRAVITY
X
Y
Z
= 0g
= –1g
= 0g
X
Y
Z
= 0g
= 1g
= 0g
OUT
OUT
OUT
OUT
TOP
TOP
OUT
OUT
TOP
X
Y
Z
= 1g
= 0g
= 0g
OUT
OUT
OUT
X
Y
Z
= 0g
= 0g
= 1g
X
Y
Z
= 0g
= 0g
= –1g
OUT
OUT
OUT
OUT
OUT
OUT
Figure 24. Output Response vs. Orientation to Gravity
Rev. B | Page 12 of 16
ADXL335
LAYOUT AND DESIGN RECOMMENDATIONS
The recommended soldering profile is shown in Figure 25 followed by a description of the profile features in Table 6. The recommended
PCB layout or solder land drawing is shown in Figure 26.
CRITICAL ZONE
tP
T
TO T
L
P
T
P
RAMP-UP
T
L
tL
T
SMAX
T
SMIN
tS
RAMP-DOWN
PREHEAT
t
25°C TO PEAK
TIME
Figure 25. Recommended Soldering Profile
Table 6. Recommended Soldering Profile
Profile Feature
Sn63/Pb37
Pb-Free
Average Ramp Rate (TL to TP)
Preheat
3°C/sec max
3°C/sec max
Minimum Temperature (TSMIN
Maximum Temperature (TSMAX
Time (TSMIN to TSMAX)(tS)
)
1±±°C
15±°C
6± sec to 12± sec
15±°C
2±±°C
6± sec to 18± sec
)
TSMAX to TL
Ramp-Up Rate
3°C/sec max
3°C/sec max
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
183°C
217°C
6± sec to 15± sec
24±°C + ±°C/−5°C
1± sec to 3± sec
6°C/sec max
6± sec to 15± sec
26±°C + ±°C/−5°C
2± sec to 4± sec
6°C/sec max
Time 25°C to Peak Temperature
6 minutes max
8 minutes max
0.50
MAX
4
0.65
0.325
0.35
MAX
0.65
4
1.95
0.325
EXPOSED PAD IS NOT
INTERNALLY CONNECTED
BUT SHOULD BE SOLDERED
FOR MECHANICAL INTEGRITY.
1.95
DIMENSIONS SHOWN IN MILLIMETERS
Figure 26. Recommended PCB Layout
Rev. B | Page 13 of 16
ADXL335
OUTLINE DIMENSIONS
4.15
4.00 SQ
3.85
0.35
0.30
0.25
PIN 1
INDICATOR
PIN 1
INDICATOR
13
16
1
4
12
0.65
BSC
EXPOSED
PAD
2.55
2.40 SQ
2.25
9
8
5
0.55
TOP VIEW
BOTTOM VIEW
0.50
0.45
0.15 MAX
1.50
1.45
1.40
FOR PROPER CONNECTION OF
THE EXPOSED PAD, REFER TO
THE PIN CONFIGURATION AND
FUNCTION DESCRIPTIONS
0.05 MAX
0.02 NOM
COPLANARITY
0.08
SECTION OF THIS DATA SHEET.
SEATING
PLANE
0.15 REF
COMPLIANT TO JEDEC STANDARDS MO-220-WGGD.
Figure 27. 16-Lead Lead Frame Chip Scale Package [LFCSP_LQ]
4 mm × 4 mm Body, 1.45 mm Thick Quad
(CP-16-14)
Dimensions shown in millimeters
ORDERING GUIDE
Model1
Measurement Range Specified Voltage
Temperature Range Package Description Package Option
ADXL335BCPZ
±3 g
±3 g
±3 g
3 V
3 V
3 V
−4±°C to +85°C
−4±°C to +85°C
−4±°C to +85°C
16-Lead LFCSP_LQ
16-Lead LFCSP_LQ
16-Lead LFCSP_LQ
Evaluation Board
CP-16-14
CP-16-14
CP-16-14
ADXL335BCPZ–RL
ADXL335BCPZ–RL7
EVAL-ADXL335Z
1 Z = RoHS Compliant Part.
Rev. B | Page 14 of 16
ADXL335
NOTES
Rev. B | Page 15 of 16
ADXL335
NOTES
Analog Devices offers specific products designated for automotive applications; please consult your local Analog Devices sales representative for details. Standard products sold by
Analog Devices are not designed, intended, or approved for use in life support, implantable medical devices, transportation, nuclear, safety, or other equipment where malfunction of
the product can reasonably be expected to result in personal injury, death, severe property damage, or severe environmental harm. Buyer uses or sells standard products for use in the
above critical applications at Buyer's own risk and Buyer agrees to defend, indemnify, and hold harmless Analog Devices from any and all damages, claims, suits, or expenses resulting
from such unintended use.
©2009–2010 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D07808-0-1/10(B)
Rev. B | Page 16 of 16
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