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PDF ADXL151 Data sheet ( Hoja de datos )
| Número de pieza | ADXL151 | |
| Descripción | PSI5-Compatible Satellite Sensor | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
Low Cost, Single Axis,
PSI5-Compatible Satellite Sensor
ADXL151
FEATURES
GENERAL DESCRIPTION
User configurable sensor range
±120 g, ±240 g, and ±480 g
PSI5 communication protocol, V2.1 compliant
Asynchronous operation—PSI5-A10P-250[228]/1L
Synchronous operation—PSI5-P10P-500/3L and others
Daisy-chain operation with bidirectional communication
Backwards compliant with PSI5 V1.3
Selectable 10- or 16-bit sensor data
High accuracy interpolation routine
User-selectable, continuous auto-zero operation
Electromechanical sensor self-test
High resistance to electromagnetic interference (EMI)/
radio frequency interference (RFI)
4.5 V to 16.5 V operation
Electronic serial number
Qualified for automotive applications
APPLICATIONS
Front impact crash sensing
Side impact crash sensing
The ADXL151 is a g range configurable single axis integrated
satellite sensor, compliant to the PSI5 V2.1 specification. The
ADXL151 enables low cost solutions for front and side impact
airbag satellite sensor applications. Acceleration data is sent to
the control module via a digital 2-wire current loop interface bus.
The g range of the sensor is configurable to provide full-scale
acceleration measurements of ±120 g, ±240 g, or ±480 g.
Additionally, the device can be configured to transmit data
from multiple g ranges during predefined time slots, in
accordance with the PSI5 specification. The device transmits
10- or 16-bit acceleration data to the control module, and can
be configured to include either a 1-bit parity check, or a 3-bit
cyclic redundancy check (CRC). The ADXL151 has a unique
electronic serial number.
The ADXL151 is available in a 12-lead, 4 mm × 4 mm LFCSP
package. The device is specified to operate over the full
automotive temperature range, from −40°C to +125°C.
FUNCTIONAL BLOCK DIAGRAM
SENSOR ANALOG FRONT END (SAFE)
BEAM 1 BEAM 2
AC
AMP
DEMOD
Σ-Δ MOD
X-AXIS,
SINGLE AXIS
DIFFERENTIA L
XL
SENSOR DIE
SENSOR
DRIVERS
SELF-
TEST
DIGITAL SIGNAL PROCESSING
DIGITAL
FILTER
OFFSET/
SENSITIVITY
CALIBRATION
AUTO-
ZERO
OFFSET
OVER-
RANGE
SELF-
TEST
CHECK
g RANGE
OUTPUT
DATA
REGISTER
OFFSET
OVR
ERROR
FLAG
SELF-
TEST
ERROR
FLAG
TIMING
GENERATOR
STATE
MACHINE
COMMUNICATIONS INTERFACE
OTP NVM
(SN, CAL, CONFIG)
SPI
DLL
SERIAL
PORT PSI5
DLL
VREG
SPI
PHY
PSI5
PHY
VDD
REG
MOSI
MISO
SCLK
CS
IDATA
VBP
VDD
VBN
SHADOW RAM
TEST REGISTERS
ERROR HANDLER
MASTER
STATE
MACHINE
POR
VDD MONITOR
TEST MUX
CLOCK
TP1
DCC/TP2
Figure 1.
For more information about the ADXL151, contact the Analog Devices, Inc., Customer Interaction Center at
http://www.analog.com/technical_support to connect with a technical support specialist.
Rev. SpA
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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
©2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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