ADXL327BCPZ-RL7 [ADI]
Small, Low Power, 3-Axis ±2 g Accelerometer; 小尺寸，低功耗， 3轴±2 g加速度
| 型号： | ADXL327BCPZ-RL7 |
| 厂家： | 
ADI |
| 描述： | Small, Low Power, 3-Axis ±2 g Accelerometer |
| 文件： | 总16页 (文件大小：332K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Small, Low Power, 3-Axis ± ± g
Accelerometer
ADXL3±7
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 ADXL327 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 2 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
Bandwidth 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 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
Gaming systems
The ADXL327 is available in a small, low profile, 4 mm ×
4 mm × 1.45 mm, 16-lead, plastic lead frame chip scale package
(LFCSP_LQ).
Disk drive protection
Image stabilization
Sports and health devices
FUNCTIONAL BLOCK DIAGRAM
+3V
V
S
ADXL327
X
OUT
~32kΩ
~32kΩ
~32kΩ
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. 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 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
Fax: 781.461.3113
www.analog.com
©2009 Analog Devices, Inc. All rights reserved.
ADXL3±7
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 .......................... 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
ADXL3±7
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
2
2.ꢀ
0.2
1
0.1
1
g
Nonlinearity
Percent 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)
0 g Voltage at XOUT, YOUT
0 g Voltage at ZOUT
Degrees
Degrees
%
Each axis
VS = 3 V
VS = 3 V
378
420
0.01
462
mV/g
%/°C
VS = 3 V
VS = 3 V
1.3
1.2
1.ꢀ
1.ꢀ
1
1.7
1.8
V
V
0 g Offset vs. Temperature
NOISE PERFORMANCE
Noise Density XOUT, YOUT, ZOUT
FREQUENCY RESPONSE4
mg/°C
2ꢀ0
μg/√Hz rms
ꢀ
Bandwidth XOUT, YOUT
No external filter
No external filter
1600
ꢀꢀ0
Hz
ꢀ
Bandwidth ZOUT
Hz
RFILT Tolerance
Sensor Resonant Frequency
SELF TEST6
32 1ꢀ%
ꢀ.ꢀ
kΩ
kHz
Logic Input Low
Logic Input High
+0.6
+2.4
+60
−4ꢀ0
+4ꢀ0
+770
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
μA
mV
mV
Self test 0 to 1
Self test 0 to 1
Self test 0 to 1
−210
+210
+210
−8ꢀ0
+8ꢀ0
+1400 mV
No load
No load
0.1
2.8
V
V
Operating Voltage Range
1.8
3.6
V
Supply Current
Turn-On Time7
VS = 3 V
3ꢀ0
1
μA
ms
No external filter
TEMPERATURE
Operating Temperature Range
−40
+8ꢀ
°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).
ꢀ Bandwidth with external capacitors = 1/(2 × π × 32 kΩ × C). For CX, CY = 0.003 μF, bandwidth = 1.6 kHz. For CZ = 0.01 μF, bandwidth = ꢀ00 Hz. For CX, CY, CZ = 10 μF,
bandwidth = 0.ꢀ Hz.
6 Self test response changes cubically with VS.
7 Turn-on time is dependent on CX, CY, CZ and is approximately 160 × CX or CY or CZ + 1 ms, where CX, CY, CZ are in μF.
Rev. 0 | Page 3 of 16
ADXL3±7
ABSOLUTE MAXIMUM RATINGS
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.
Table 2.
Parameter
Rating
Acceleration (Any Axis, Unpowered)
10,000 g
Acceleration (Any Axis, Powered)
10,000 g
VS
−0.3 V to +3.6 V
(COM − 0.3 V) to (VS + 0.3 V)
Indefinite
All Other Pins
Output Short-Circuit Duration
(Any Pin to Common)
Temperature Range (Powered)
Temperature Range (Storage)
−ꢀꢀ°C to +12ꢀ°C
−6ꢀ°C to +1ꢀ0°C
ESD CAUTION
Rev. 0 | Page 4 of 16
ADXL3±7
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
16
15
14
13
ADXL327
1
2
3
4
12
NC
ST
X
OUT
TOP VIEW
(Not to Scale)
11
10
NC
Y
+Y
+Z
+X
COM
NC
OUT
9
NC
5
6
7
8
NC = NO CONNECT
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
NC
No Connect (or Optionally Ground)
2
ST
Self Test
3
4
COM
NC
Common
No Connect
ꢀ
6
7
8
COM
COM
COM
ZOUT
Common
Common
Common
Z Channel Output
9
NC
YOUT
NC
XOUT
NC
VS
VS
NC
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
10
11
12
13
14
1ꢀ
16
EP
Exposed pad
Not internally connected. Solder for mechanical integrity.
Rev. 0 | Page ꢀ of 16
ADXL3±7
TYPICAL PERFORMANCE CHARACTERISTICS
N > 1000 for all typical performance plots, unless otherwise noted.
60
50
40
30
20
10
0
50
40
30
20
10
0
1.45 1.46 1.47 1.48 1.49 1.50 1.51 1.52 1.53 1.54 1.55
–0.48
–0.46
–0.44
–0.42
–0.40
–0.38
–0.36
OUTPUT (V)
VOLTAGE (V)
Figure 3. X-Axis Zero g Bias at 25°C, VS = 3 V
Figure 6. X-Axis Self Test Response at 25°C, VS = 3 V
40
30
20
10
50
40
30
20
10
0
0
1.45 1.46 1.47 1.48 1.49 1.50 1.51 1.52 1.53 1.54 1.55
0.36 0.37 0.38 0.39 0.40 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48
VOLTAGE (V)
OUTPUT (V)
Figure 7. Y-Axis Self Test Response at 25°C, VS = 3 V
Figure 4. Y-Axis Zero g Bias at 25°C, VS = 3 V
25
20
15
10
5
30
20
10
0
0
0.66
0.68
0.70
0.72
0.74
0.76
0.78
0.80
0.82
1.40 1.42 1.44 1.46 1.48 1.50 1.52 1.54 1.56 1.58 1.60
VOLTAGE (V)
OUTPUT (V)
Figure 8. Z-Axis Self Test Response at 25°C, VS = 3 V
Figure 5. Z-Axis Zero g Bias at 25°C, VS = 3 V
Rev. 0 | Page 6 of 16
ADXL3±7
70
60
50
40
30
20
10
0
N = 8
1.57
1.55
1.53
1.51
1.49
1.47
1.45
1.43
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
–1.0 –0.8 –0.6 –0.4 –0.2
0
0.2 0.4 0.6 0.8 1.0
/°C)
TEMPERATURE COEFFICIENT (m
g
Figure 12. X-Axis Zero g Bias vs. Temperature, Eight Parts Soldered to PCB
Figure 9. X-Axis Zero g Bias Temperature Coefficient, VS = 3 V
60
50
40
30
20
10
0
N = 8
1.57
1.55
1.53
1.51
1.49
1.47
1.45
1.43
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
–1.0 –0.8 –0.6 –0.4 –0.2
0
0.2 0.4 0.6 0.8 1.0
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
60
50
40
30
20
10
0
N = 8
1.54
1.52
1.50
1.48
1.46
1.44
1.42
1.40
–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
/°C)
TEMPERATURE COEFFICIENT (m
g
Figure 14. Z-Axis Zero g Bias vs. Temperature, Eight Parts Soldered to PCB
Figure 11. Z-Axis Zero g Bias Temperature Coefficient, VS = 3 V
Rev. 0 | Page 7 of 16
ADXL3±7
0.46
0.45
0.44
0.43
0.42
0.41
0.40
0.39
0.38
60
50
40
30
20
10
N = 8
0
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.45
0.46
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
70
60
50
40
30
20
10
0.46
0.45
0.44
0.43
0.42
0.41
0.40
0.39
0.38
N = 8
0
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.45
0.46
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
SENSITIVITY (V/
g)
Figure 16. Y-Axis Sensitivity at 25°C, VS = 3 V
Figure 19. Y-Axis Sensitivity vs. Temperature,
Eight Parts Soldered to PCB, VS = 3 V
60
50
40
30
20
10
0.46
0.45
0.44
0.43
0.42
0.41
0.40
0.39
0.38
N = 8
0
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.45
0.46
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
SENSITIVITY (V/g)
Figure 17. Z-Axis Sensitivity at 25°C, VS = 3 V
Figure 20. Z-Axis Sensitivity vs. Temperature,
Eight Parts Soldered to PCB, VS = 3 V
Rev. 0 | Page 8 of 16
ADXL3±7
600
500
400
300
200
100
0
CH4: Z
, 500mV/DIV
OUT
CH3: Y
CH2: X
, 500mV/DIV
, 500mV/DIV
OUT
OUT
4
3
2
CH1: POWER, 2V/DIV
1
OUTPUTS ARE OFFSET
FOR CLARITY
TIME (1ms/DIV)
1.5
2.0
2.5
3.0
3.5
4.0
SUPPLY (V)
Figure 22. Typical Turn-On Time, VS = 3 V
CX = CY = CZ = 0.0047 μF
Figure 21. Typical Current Consumption vs. Supply Voltage
Rev. 0 | Page 9 of 16
ADXL3±7
THEORY OF OPERATION
The ADXL327 is a complete 3-axis acceleration measurement
system. The ADXL327 has a measurement range of 2 g minimum.
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.
MECHANICAL SENSOR
The ADXL327 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 ADXL327. As a result, there is neither quantization
error nor nonmonotonic behavior, and temperature hysteresis is
very low (typically <3 mg over the −25°C to +70°C temperature
range).
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 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.
Rev. 0 | Page 10 of 16
ADXL3±7
APPLICATIONS INFORMATION
POWER SUPPLY DECOUPLING
DESIGN TRADE-OFFS FOR SELECTING FILTER
CHARACTERISTICS: THE NOISE/BW TRADE-OFF
For most applications, a single 0.1 μF capacitor, CDC, placed
close to the ADXL327 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 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 ADXL327 ground to the power supply
ground is low impedance because noise transmitted through
ground has a similar effect as noise transmitted through VS.
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 ADXL327 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 ADXL327 noise has the characteristics of white Gaussian
noise, which contributes equally at all frequencies and is described
in terms of μg/√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.
SETTING THE BANDWIDTH USING CX, CY, AND CZ
The ADXL327 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/(2π(32 kΩ) × C(X, Y, Z)
or more simply
–3 dB = 5 ꢀF/C(X, Y, Z)
)
With the single-pole roll-off characteristic, the typical noise of
the ADXL327 is determined by
rms Noise = Noise Density ×
( BW ×1.6)
f
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.
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 μF for CX,
CY, and CZ is recommended in all cases.
Table 5. Estimation of Peak-to-Peak Noise
Table 4. Filter Capacitor Selection, CX, CY, and CZ
% of Time That Noise Exceeds
Bandwidth (Hz)
Capacitor (μF)
Peak-to-Peak Value
2 × rms
Nominal Peak-to-Peak Value
1
4.7
32
10
ꢀ0
100
200
ꢀ00
0.47
0.10
0.0ꢀ
0.027
0.01
4 × rms
6 × rms
8 × rms
4.6
0.27
0.006
USE WITH OPERATING VOLTAGES OTHER THAN 3 V
The ADXL327 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.
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 −450 mV) in the X axis,
+1.08 g (+450 mV) on the Y axis, and +1.83 g (+770 mV) on
the Z axis. This ST pin can be left open circuit or connected to
common (COM) in normal use.
The ADXL327 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 500 mV/g.
At VS = 2 V, the output sensitivity is typically 289 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 μg/√Hz, while at VS = 2 V, the
X- and Y-axis noise density is typically 300 μg/√Hz.
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
ADXL3±7
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.
AXES OF ACCELERATION SENSITIVITY
A
Z
For example, at VS = 3.6 V, the self test response for the ADXL327
is approximately −780 mV for the X axis, +780 mV for the Y axis,
and +1330 mV for the Z axis. At VS = 2 V, the self test response
is approximately −130 mV for the X axis, +130 mV for the Y axis,
and −220 mV for the Z axis.
A
Y
TOP
The supply current decreases as the supply voltage decreases.
Typical current consumption at VS = 3.6 V is 375 μA, and
typical current consumption at VS = 2 V is 300 μA.
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
T
O
P
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. 0 | Page 12 of 16
ADXL3±7
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
t25°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 maximum
3°C/sec maximum
Minimum Temperature (TSMIN
)
100°C
1ꢀ0°C
Maximum Temperature (TSMAX
Time (TSMIN to TSMAX), tS
)
1ꢀ0°C
60 sec to 120 sec
200°C
60 sec to 180 sec
TSMAX to TL
Ramp-Up Rate
3°C/sec maximum
3°C/sec maximum
Time Maintained Above Liquidous (TL)
Liquidous Temperature (TL)
Time (tL)
Peak Temperature (TP)
Time Within ꢀ°C of Actual Peak Temperature (tP)
Ramp-Down Rate
183°C
217°C
60 sec to 1ꢀ0 sec
240°C + 0°C/−ꢀ°C
10 sec to 30 sec
6°C/sec maximum
6 minutes maximum
60 sec to 1ꢀ0 sec
260°C + 0°C/−ꢀ°C
20 sec to 40 sec
6°C/sec maximum
8 minutes maximum
Time 2ꢀ°C to Peak Temperature
0.50
MAX
4
0.65
0.325
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
Figure 26. Recommended PCB Layout
Rev. 0 | Page 13 of 16
ADXL3±7
OUTLINE DIMENSIONS
0.20 MIN
PIN 1
INDICATOR
0.20 MIN
0.65 BSC
13
16
PIN 1
INDICATOR
1
4
12
9
4.15
2.43
1.75 SQ
1.08
EXPOSED
PAD
(BOTTOM VIEW)
4.00 SQ
3.85
TOP VIEW
8
5
0.55
0.50
0.45
1.95 BSC
0.05 MAX
0.02 NOM
FOR PROPER CONNECTION OF
THE EXPOSED PAD, REFER TO
THE PIN CONFIGURATION AND
FUNCTION DESCRIPTIONS
1.50
1.45
1.40
0.35
0.30
0.25
COPLANARITY
0.05
SEATING
PLANE
SECTION OF THIS DATA SHEET.
*
STACKED DIE WITH GLASS SEAL.
Figure 27. 16-Lead Lead Frame Chip Scale Package [LFCSP_LQ]
4 mm × 4 mm Body, 1.45 mm Thick Quad
(CP-16-5a*)
Dimensions shown in millimeters
ORDERING GUIDE
Model
Measurement Range Specified Voltage
Temperature Range Package Description Package Option
ADXL327BCPZ1
ADXL327BCPZ–RL1
ADXL327BCPZ–RL71
EVAL-ADXL327Z1
2 g
2 g
2 g
3 V
3 V
3 V
−40°C to +8ꢀ°C
−40°C to +8ꢀ°C
−40°C to +8ꢀ°C
16-Lead LFCSP_LQ
16-Lead LFCSP_LQ
16-Lead LFCSP_LQ
Evaluation Board
CP-16-ꢀa
CP-16-ꢀa
CP-16-ꢀa
1 Z = RoHS Compliant Part.
Rev. 0 | Page 14 of 16
ADXL3±7
NOTES
Rev. 0 | Page 1ꢀ of 16
ADXL3±7
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 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D07949-0-8/09(0)
Rev. 0 | Page 16 of 16
相关型号：
ADXL330KCPZ-RL
IC SPECIALTY ANALOG CIRCUIT, PBCC16, 4 X 4 MM, 1.45 MM HEIGHT, ROHS COMPLIANT, PLASTIC, LFCSP-16, Analog IC:Other
ADI
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