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Small, Low Power, 3-Axis 5 g Accelerometer ADXL325
FEATURES
3-axis sensing Small, low profile package 4 mm x 4 mm x 1.45 mm LFCSP Low power: 350 A typical Single-supply operation: 1.8 V to 3.6 V 10,000 g shock survival Excellent temperature stability Bandwidth adjustment with a single capacitor per axis RoHS/WEEE lead-free compliant
GENERAL DESCRIPTION
The ADXL325 is a small, low power, complete 3-axis accelerometer with signal conditioned voltage outputs. The product measures acceleration with a minimum full-scale range of 5 g. It can measure the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration, resulting from motion, shock, or vibration. 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 X and Y axes and a range of 0.5 Hz to 550 Hz for the Z axis. The ADXL325 is available in a small, low profile, 4 mm x 4 mm x 1.45 mm, 16-lead, plastic lead frame chip scale package (LFCSP_LQ).
APPLICATIONS
Cost-sensitive, low power, motion- and tilt-sensing applications Mobile devices Gaming systems Disk drive protection Image stabilization Sports and health devices
FUNCTIONAL BLOCK DIAGRAM
+3V VS
ADXL325
OUTPUT AMP 3-AXIS SENSOR CDC AC AMP DEMOD OUTPUT AMP
~32k
XOUT CX
~32k
YOUT CY
OUTPUT AMP
~32k
ZOUT CZ
Figure 1.
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.
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 (c)2009 Analog Devices, Inc. All rights reserved.
07946-001
COM
ST
ADXL325 TABLE OF CONTENTS
Features .............................................................................................. 1 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 Performance ................................................................................ 10 Applications Information .............................................................. 11 Power Supply Decoupling ......................................................... 11 Setting the Bandwidth Using CX, CY, and CZ .......................... 11 Self Test ........................................................................................ 11 Design Trade-Offs for Selecting Filter Characteristics: The Noise/BW Trade-Off .................................................................. 11 Use with Operating Voltages Other Than 3 V .......................... 11 Axes of Acceleration Sensitivity ............................................... 12 Layout and Design Recommendations ................................... 13 Outline Dimensions ....................................................................... 14 Ordering Guide .......................................................................... 14
REVISION HISTORY
8/09--Revision 0: Initial Version
Rev. 0 | Page 2 of 16
ADXL325 SPECIFICATIONS
TA = 25C, VS = 3 V, CX = CY = CZ = 0.1 F, acceleration = 0 g, unless otherwise noted. All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed. Table 1.
Parameter SENSOR INPUT Measurement Range Nonlinearity Package Alignment Error Interaxis Alignment Error Cross-Axis Sensitivity 1 SENSITIVITY (RATIOMETRIC) 2 Sensitivity at XOUT, YOUT, ZOUT Sensitivity Change Due to Temperature 3 ZERO g BIAS LEVEL (RATIOMETRIC) 0 g Voltage at XOUT, YOUT, ZOUT 0 g Offset vs. Temperature NOISE PERFORMANCE Noise Density XOUT, YOUT, ZOUT FREQUENCY RESPONSE 4 Bandwidth XOUT, YOUT 5 Bandwidth ZOUT5 RFILT Tolerance Sensor Resonant Frequency SELF TEST 6 Logic Input Low Logic Input High 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 Operating Voltage Range Supply Current Turn-On Time 7 TEMPERATURE Operating Temperature Range
1 2
Conditions Each axis Percent of full scale
Min 5
Typ 6 0.2 1 0.1 1 174 0.01 1.5 1 250
Max
Unit g % Degrees Degrees %
Each axis VS = 3 V VS = 3 V VS = 3 V
156
192
mV/g %/C V mg/C g/Hz rms Hz Hz k kHz V V A mV mV mV V V
1.3
1.7
No external filter No external filter
1600 550 32 15% 5.5 +0.6 +2.4 +60 -190 +190 +320 0.1 2.8 1.8 3.6 350 1 -40 +85
Self test 0 to 1 Self test 0 to 1 Self test 0 to 1 No load No load
-90 +90 +90
-350 +350 +580
VS = 3 V No external filter
V A ms C
Defined as coupling between any two axes. 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 x x 32 k x C). For CX, CY = 0.003 F, bandwidth = 1.6 kHz. For CZ = 0.01 F, bandwidth = 500 Hz. For CX, CY, CZ = 10 F, bandwidth = 0.5 Hz. 6 Self test response changes cubically with VS. 7 Turn-on time is dependent on CX, CY, CZ and is approximately 160 x CX or CY or CZ + 1 ms, where CX, CY, CZ are in F.
Rev. 0 | Page 3 of 16
ADXL325 ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter Acceleration (Any Axis, Unpowered) Acceleration (Any Axis, Powered) VS All Other Pins Output Short-Circuit Duration (Any Pin to Common) Temperature Range (Powered) Temperature Range (Storage) Rating 10,000 g 10,000 g -0.3 V to +3.6 V (COM - 0.3 V) to (VS + 0.3 V) Indefinite -55C to +125C -65C to +150C
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.
ESD CAUTION
Rev. 0 | Page 4 of 16
ADXL325 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
NC
16 15 14
NC ST COM NC
1 2 3 4 5
ADXL325
TOP VIEW (Not to Scale) +Y +Z +X
6 7 8
NC
13 12 11 10 9
VS
VS
XOUT NC YOUT NC
COM
COM
COM
ZOUT
NC = NO CONNECT
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 EP Mnemonic NC ST COM NC COM COM COM ZOUT NC YOUT NC XOUT NC VS VS NC Exposed pad Description No Connect (or Optionally Ground) Self Test Common No Connect Common Common Common Z Channel Output No Connect (or Optionally Ground) Y Channel Output No Connect X Channel Output No Connect Supply Voltage (1.8 V to 3.6 V) Supply Voltage (1.8 V to 3.6 V) No Connect Not internally connected. Solder for mechanical integrity.
Rev. 0 | Page 5 of 16
07946-003
ADXL325 TYPICAL PERFORMANCE CHARACTERISTICS
N > 1000 for all typical performance plots, unless otherwise noted.
50
60
40
POPULATION (%)
50
30
POPULATION (%)
40
30
20
20
10
10
-0.22
-0.20
-0.18
-0.16
-0.14
-0.12
OUTPUT (V)
VOLTAGE (V)
Figure 3. X-Axis Zero g Bias at 25C, VS = 3 V
40
Figure 6. X-Axis Self Test Response at 25C, VS = 3 V
60
50
30
POPULATION (%)
20
POPULATION (%)
40
30
20
10
10
0
0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 VOLTAGE (V)
OUTPUT (V)
Figure 4. Y-Axis Zero g Bias at 25C, VS = 3 V
30
60
Figure 7. Y-Axis Self Test Response at 25C, VS = 3 V
25
50
POPULATION (%)
15
POPULATION (%)
20
40
30
10
20
5
10
0.26 0.27 0.28 0.29 0.30 0.31 0.32 0.33 0.34 0.35 0.36
VOLTAGE (V)
OUTPUT (V)
Figure 5. Z-Axis Zero g Bias at 25C, VS = 3 V
Figure 8. Z-Axis Self Test Response at 25C, VS = 3 V
Rev. 0 | Page 6 of 16
07946-010
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
07946-007
0
0
07946-009
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
07946-006
0
07946-008
1.46
1.47
1.48
1.49
1.5
1.51
1.52
1.53
1.54
07946-005
0
0
ADXL325
50 45 40 35
1.55 N=8 1.54 1.53 1.52
OUTPUT (V)
07946-011
POPULATION (%)
30 25 20 15 10 5 0 -1.4 -1.0 -0.6 -0.2 0.2 0.6 1.0 1.4
1.51 1.50 1.49 1.48 1.47 1.46 0 10 20 30 40 50 60 70 80 90 100
07946-014
07946-016 07946-015
1.45 -40 -30 -20 -10
TEMPERATURE COEFFICIENT (mg/C)
TEMPERATURE (C)
Figure 9. X-Axis Zero g Bias Temperature Coefficient, VS = 3 V
50
Figure 12. X-Axis Zero g Bias vs. Temperature, Eight Parts Soldered to PCB
1.55 N=8 1.54
40
POPULATION (%)
1.53 1.52 OUTPUT (V)
30
1.51 1.50 1.49 1.48
20
10
1.47 1.46
-1.4
-1.0
-0.6
-0.2
0.2
0.6
1.0
1.4
07946-012
0
1.45 -40 -30 -20 -10
0
10
20
30
40
50
60
70
80
90 100
TEMPERATURE COEFFICIENT (mg/C)
TEMPERATURE (C)
Figure 10. Y-Axis Zero g Bias Temperature Coefficient, VS = 3 V
40
Figure 13. Y-Axis Zero g Bias vs. Temperature, Eight Parts Soldered to PCB
1.54
N=8
35
1.52
30
POPULATION (%)
OUTPUT (V)
25 20 15 10 5 0
1.50 1.48 1.46 1.44 1.42 1.40 -40 -30 -20 -10
-3.5 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5
0
0.5 1.0 1.5 2.0 2.5
07946-013
0
10
20
30
40
50
60
70
80
90 100
TEMPERATURE COEFFICIENT (mg/C)
TEMPERATURE (C)
Figure 11. Z-Axis Zero g Bias Temperature Coefficient, VS = 3 V
Figure 14. Z-Axis Zero g Bias vs. Temperature, Eight Parts Soldered to PCB
Rev. 0 | Page 7 of 16
ADXL325
30
0.187
N=8
25
0.182
POPULATION (%)
20
SENSITIVITY (V/g)
0.177 0.172 0.167 0.162 0.157 -40 -30 -20 -10
15
10
5
0.164
0.166
0.168
0.170
0.172
0.174
0.176
0.178
0.180
0.182
07946-017
0
10
20
30
40
50
60
70
80
90 100
SENSITIVITY (V/g)
TEMPERATURE (C)
Figure 15. X-Axis Sensitivity at 25C, VS = 3 V
40 35 30
POPULATION (%)
0.187 0.182
Figure 18. X-Axis Sensitivity vs. Temperature, Eight Parts Soldered to PCB, VS = 3 V
N=8
25 20 15 10 5 0
0.164 0.166 0.168 0.170 0.172 0.174 0.176 0.178 0.180 0.182
SENSITIVITY (V/g)
0.177 0.172 0.167 0.162 0.157 -40 -30 -20 -10
07946-018
0
10
20
30
40
50
60
70
80
90 100
SENSITIVITY (V/g)
TEMPERATURE (C)
Figure 16. Y-Axis Sensitivity at 25C, VS = 3 V
35 30 25
POPULATION (%)
0.187
Figure 19. Y-Axis Sensitivity vs. Temperature, Eight Parts Soldered to PCB, VS = 3 V
N=8
0.182
20 15 10 5 0
0.164 0.166 0.168 0.170 0.172 0.174 0.176 0.178 0.180 0.182
SENSITIVITY (V/g)
0.177
0.172
0.167
0.162
07946-019
0
10
20
30
40
50
60
70
80
90 100
SENSITIVITY (V/g)
TEMPERATURE (C)
Figure 17. Z-Axis Sensitivity at 25C, VS = 3 V
Figure 20. Z-Axis Sensitivity vs. Temperature, Eight Parts Soldered to PCB, VS = 3 V
Rev. 0 | Page 8 of 16
07946-022
0.157 -40 -30 -20 -10
07946-021
07946-020
0
ADXL325
600
CH4: ZOUT, 500mV/DIV CH3: Y OUT, 500mV/DIV
500
CURRENT (A)
400
CH2: X OUT, 500mV/DIV
4 3
300
200
2
CH1: POWER, 2V/DIV
1
OUTPUTS ARE OFFSET FOR CLARITY
2.0
2.5
3.0
3.5
4.0
SUPPLY (V)
Figure 21. Typical Current Consumption vs. Supply Voltage
07946-023
0 1.5
TIME (1ms/DIV)
Figure 22. Typical Turn-On Time, VS = 3 V, CX = CY = CZ = 0.0047 F
Rev. 0 | Page 9 of 16
07946-024
100
ADXL325 THEORY OF OPERATION
The ADXL325 is a complete 3-axis acceleration measurement system. The ADXL325 has a measurement range of 5 g minimum. It contains a polysilicon surface micromachined sensor and signal conditioning circuitry to implement an openloop 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 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 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 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. The demodulator output is amplified and brought off-chip through a 32 k 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 ADXL325 uses a single structure for sensing the X, Y, and Z axes. As a result, the three axes sense directions are highly orthogonal with 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.
PERFORMANCE
Rather than using additional temperature compensation circuitry, innovative design techniques ensure that high performance is built-in to the ADXL325. As a result, there is neither quantization error nor nonmonotonic behavior, and temperature hysteresis is very low (typically <3 mg over the -25C to +70C temperature range).
Rev. 0 | Page 10 of 16
ADXL325 APPLICATIONS INFORMATION
POWER SUPPLY DECOUPLING
For most applications, a single 0.1 F capacitor, CDC, placed close to the ADXL325 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. If additional decoupling is needed, a 100 (or smaller) resistor or ferrite bead can be inserted in the supply line. Additionally, a larger bulk bypass capacitor (1 F or greater) can be added in parallel to CDC. Ensure that the connection from the ADXL325 ground to the power supply ground is low impedance because noise transmitted through ground has a similar effect as noise transmitted through VS.
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 the analog filter bandwidth at XOUT, YOUT, and ZOUT. The output of the ADXL325 has a typical bandwidth 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. The ADXL325 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 application to maximize the resolution and dynamic range of the accelerometer. With the single-pole roll-off characteristic, the typical noise of the ADXL325 is determined by rms Noise = Noise Density x ( BW x 1.6 ) Often, the peak value of the noise is desired. 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 5. Estimation of Peak-to-Peak Noise
% of Time That Noise Exceeds Nominal Peak-to-Peak Value 32 4.6 0.27 0.006
SETTING THE BANDWIDTH USING CX, CY, AND CZ
The ADXL325 has provisions for band limiting the XOUT, YOUT, and ZOUT pins. Capacitors must be added at these pins to implement low-pass filtering for antialiasing and noise reduction. The 3 dB bandwidth equation is f-3 dB = 1/(2(32 k) x C(X, Y, Z)) or more simply f-3 dB = 5 F/C(X, Y, Z) The tolerance of the internal resistor (RFILT) typically varies as much as 15% of its nominal value (32 k), and the bandwidth varies accordingly. A minimum capacitance of 0.0047 F for CX, CY, and CZ is recommended in all cases. Table 4. Filter Capacitor Selection, CX, CY, and CZ
Bandwidth (Hz) 1 10 50 100 200 500 Capacitor (F) 4.7 0.47 0.10 0.05 0.027 0.01
Peak-to-Peak Value 2 x rms 4 x rms 6 x rms 8 x rms
USE WITH OPERATING VOLTAGES OTHER THAN 3 V
The ADXL325 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 ADXL325 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 typically 209 mV/g. At VS = 2 V, the output sensitivity is typically 116 mV/g. The zero g bias output is also ratiometric; therefore, 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 = 3.6 V, the X- and Y-axis noise density is typically 200 g/Hz, while at VS = 2 V, the X- and Y-axis noise density is typically 300 g/Hz.
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 whether the accelerometer is functional. The typical change in output is -1.08 g (corresponding to -190 mV) in the X axis, +1.08 g (+190 mV) on the Y axis, and +1.83 g (+320 mV) on the Z axis. This ST pin can be left open circuit or connected to common (COM) in normal use. Never expose the ST pin to voltages greater than VS + 0.3 V. If this cannot be guaranteed due to the system design (for instance, there are multiple supply voltages), then a low VF clamping diode between ST and VS is recommended.
Rev. 0 | Page 11 of 16
ADXL325
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 ADXL325 is approximately -328 mV for the X-axis, +328 mV for the Y axis, and +553 mV for the Z axis. At VS = 2 V, the self test response is approximately -56 mV for the X axis, +56 mV for the Y axis, and -95 mV for the Z axis. The supply current decreases as the supply voltage decreases. Typical current consumption at VS = 3.6 V is 375 A, and typical current consumption at VS = 2 V is 300 A.
TOP
AXES OF ACCELERATION SENSITIVITY
AZ
AY
AX
Figure 23. Axes of Acceleration Sensitivity (Corresponding Output Voltage Increases When Accelerated Along the Sensitive Axis)
XOUT = -1g YOUT = 0g ZOUT = 0g
TOP
GRAVITY
XOUT = 0g YOUT = 1g ZOUT = 0g XOUT = 0g YOUT = -1g ZOUT = 0g
TOP
TOP
TOP
XOUT = 1g YOUT = 0g ZOUT = 0g
TOP
Figure 24. Output Response vs. Orientation to Gravity
Rev. 0 | Page 12 of 16
07946-026
XOUT = 0g YOUT = 0g ZOUT = 1g
XOUT = 0g YOUT = 0g ZOUT = -1g
07946-025
ADXL325
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 TL TO TP
TP RAMP-UP TL
tP
TEMPERATURE
TSMAX TSMIN
tL
PREHEAT
tS
RAMP-DOWN
t25C TO PEAK
TIME
Figure 25. Recommended Soldering Profile
Table 6. Recommended Soldering Profile
Profile Feature Average Ramp Rate (TL to TP) Preheat Minimum Temperature (TSMIN) Maximum 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 5C of Actual Peak Temperature (tP) Ramp-Down Rate Time 25C to Peak Temperature
0.50 MAX 0.65
Sn63/Pb37 3C/sec maximum 100C 150C 60 sec to 120 sec 3C/sec maximum 183C 60 sec to 150 sec 240C + 0C/-5C 10 sec to 30 sec 6C/sec maximum 6 minutes maximum
4 0.325
07946-002
Pb-Free 3C/sec maximum 150C 200C 60 sec to 180 sec 3C/sec maximum 217C 60 sec to 150 sec 260C + 0C/-5C 20 sec to 40 sec 6C/sec maximum 8 minutes maximum
0.35 MAX
0.65
4 1.95 0.325 CENTER PAD IS NOT INTERNALLY CONNECTED BUT SHOULD BE SOLDERED FOR MECHANICAL INTEGRITY
1.95 DIMENSIONS SHOWN IN MILLIMETERS
07946-004
Figure 26. Recommended PCB Layout
Rev. 0 | Page 13 of 16
ADXL325 OUTLINE DIMENSIONS
0.20 MIN 0.20 MIN PIN 1 INDICATOR TOP VIEW
13 16 1
PIN 1 INDICATOR 2.43 1.75 SQ 1.08
4.15 4.00 SQ 3.85 0.65 BSC 0.55 0.50 0.45
12
(BOTTOM VIEW)
EXPOSED PAD
9 8 5
4
1.95 BSC FOR PROPER CONNECTION OF THE EXPOSED PAD, REFER TO THE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS SECTION OF THIS DATA SHEET.
112008-A
1.50 1.45 1.40
0.05 MAX 0.02 NOM SEATING PLANE 0.35 0.30 0.25 COPLANARITY 0.05
*STACKED DIE WITH GLASS SEAL.
Figure 27. 16-Lead Lead Frame Chip Scale Package [LFCSP_LQ] 4 mm x 4 mm Body, 1.45 mm Thick Quad (CP-16-5a*) Dimensions shown in millimeters
ORDERING GUIDE
Model ADXL325BCPZ 1 ADXL325BCPZ-RL1 ADXL325BCPZ-RL71 EVAL-ADXL325Z1
1
Measurement Range 5 g 5 g 5 g
Specified Voltage 3V 3V 3V
Temperature Range -40C to +85C -40C to +85C -40C to +85C
Package Description 16-Lead LFCSP_LQ 16-Lead LFCSP_LQ 16-Lead LFCSP_LQ Evaluation Board
Package Option CP-16-5a CP-16-5a CP-16-5a
Z = RoHS Compliant Part.
Rev. 0 | Page 14 of 16
ADXL325 NOTES
Rev. 0 | Page 15 of 16
ADXL325 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. (c)2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07946-0-8/09(0)
Rev. 0 | Page 16 of 16

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