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ADXL350 데이터시트 PDF




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기능 Digital Accelerometer
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ADXL350 데이터시트, 핀배열, 회로
Data Sheet
3-Axis, ±1g/±2g/±4g/±8g
Digital Accelerometer
ADXL350
FEATURES
Excellent zero-g bias accuracy and stability with
minimum/maximum specifications
Ultralow power: as low as 45 μA in measurement mode and
0.1 μA in standby mode at VS = 2.5 V (typical)
Power consumption scales automatically with bandwidth
User-selectable resolution
Fixed 10-bit resolution
Full resolution, where resolution increases with g range,
up to 13-bit resolution at ±8 g (maintains 2 mg/LSB scale
factor in all g ranges)
Embedded, 32-level FIFO buffer minimizes host processor
load
Tap/double tap detection and free-fall detection
Activity/inactivity monitoring
Supply voltage range: 2.0 V to 3.6 V
I/O voltage range: 1.7 V to VS
SPI (3- and 4-wire) and I2C digital interfaces
Flexible interrupt modes mappable to either interrupt pin
Measurement ranges selectable via serial command
Bandwidth selectable via serial command
Wide temperature range (−40°C to +85°C)
10,000 g shock survival
Pb-free/RoHS compliant
Small and thin: 4 mm × 3 mm × 1.2 mm cavity LGA package
APPLICATIONS
Portable consumer devices
High performance medical and industrial applications
GENERAL DESCRIPTION
The high performance ADXL350 is a small, thin, low power,
3-axis accelerometer with high resolution (13-bit) and selectable
measurement ranges up to ±8 g. The ADXL350 offers industry-
leading noise and temperature performance for application
robustness with minimal calibration. Digital output data is
formatted as 16-bit twos complement and is accessible through
either a SPI (3- or 4-wire) or I2C digital interface.
The ADXL350 is well suited for high performance portable
applications. It measures the static acceleration of gravity in tilt-
sensing applications, as well as dynamic acceleration resulting
from motion or shock. Its high resolution (2 mg/LSB) enables
measurement of inclination changes of less than 1.0°.
Several special sensing functions are provided. Activity and
inactivity sensing detect the presence or lack of motion and if
the acceleration on any axis exceeds a user-set level. Tap sensing
detects single and double taps. Free-fall sensing detects if the
device is falling. These functions can be mapped to one of two
interrupt output pins.
Low power modes enable intelligent motion-based power
management with threshold sensing and active acceleration
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measurement at extremely low power dissipation.
The ADXL350 is supplied in a small, thin, 3 mm × 4 mm ×
1.2 mm, 16-lead cavity laminate package.
FUNCTIONAL BLOCK DIAGRAM
VS VDD I/O
ADXL350
POWER
MANAGEMENT
3-AXIS
SENSOR
SENSE
ELECTRONICS
ADC
DIGITAL
FILTER
CONTROL
AND
INTERRUPT
LOGIC
INT1
INT2
GND
32 LEVEL
FIFO
Figure 1.
SERIAL I/O
CS
SDA/SDI/SDIO
SDO/ALT
ADDRESS
SCL/SCLK
Rev. 0
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2012 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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ADXL350 pdf, 반도체, 판매, 대치품
ADXL350
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
Acceleration
Any Axis, Unpowered
Any Axis, Powered
VS
VDD I/O
Digital Pins
All Other Pins
Output Short-Circuit Duration
(Any Pin to Ground)
Temperature Range
Powered
Storage
Rating
10,000 g
10,000 g
−0.3 V to +3.6 V
−0.3 V to +3.6 V
−0.3 V to VDD I/O + 0.3 V or
3.6 V, whichever is less
−0.3 V to +3.6 V
Indefinite
−40°C to +105°C
−40°C to +105°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
Table 3. Package Characteristics
Package Type
16-Terminal LGA_CAV
θJA
150°C/W
θJC
85°C/W
Device Weight
20 mg
Data Sheet
PACKAGE INFORMATION
The information in Figure 2 and Table 4 provide details about
the package branding for the ADXL350. For a complete listing
of product availability, see the Ordering Guide section.
XL350B
ywVVVV
Figure 2. Product Information on Package (Top View)
Table 4. Package Branding Information
Branding Key
Field Description
XL350B
Part identifier for ADXL350
yw Date code
VVVV
Factory lot code
ESD CAUTION
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Rev. 0 | Page 4 of 36
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ADXL350 전자부품, 판매, 대치품
Data Sheet
30
–40°C TO +25°C
+25°C TO +85°C
20
10
0
ZERO g OFFSET TEMPERATURE COEFFICIENT (mg/°C)
Figure 10. X-Axis Zero g Offset Temperature Coefficient, VS = 2.5 V
30
–40°C TO +25°C
+25°C TO +85°C
20
10
0
ZERO g OFFSET TEMPERATURE COEFFICIENT (mg/°C)
Figure 11. Y-Axis Zero g Offset Temperature Coefficient, VS = 2.5 V
20
–40°C TO +25°C
+25°C TO +85°C
15
10
5
0
ZERO g OFFSET TEMPERATURE COEFFICIENT (mg/°C)
Figure 12. Z-Axis Zero g Offset Temperature Coefficient, VS = 2.5 V
ADXL350
100
N = 16
75 VS = VDD I/O = 2.5V
50
25
0
–25
–50
–75
–100
–60 –40 –20 0 20 40 60 80 100
TEMPERATURE (°C)
Figure 13. X-Axis Zero g Offset vs. Temperature—
16 Parts Soldered to PCB, VS = 2.5 V
100
N = 16
75 VS = VDD I/O = 2.5V
50
25
0
–25
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–50
–75
–100
–60 –40 –20 0 20 40 60 80 100
TEMPERATURE (°C)
Figure 14. Y-Axis Zero g Offset vs. Temperature—
16 Parts Soldered to PCB, VS = 2.5 V
150
N = 16
VS = VDD I/O = 2.5V
100
50
0
–50
–100
–150
–60 –40 –20 0 20 40 60 80 100
TEMPERATURE (°C)
Figure 15. Z-Axis Zero g Offset vs. Temperature—
16 Parts Soldered to PCB, VS = 2.5 V
Rev. 0 | Page 7 of 36
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