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Bosch Semiconductors

SMB433

Acceleration sensor for vibration control

Application & Technical Summary

SMB4xx

The single-axis low-g SMB433 accelerometer (aₓ) is designed for vibration control. The main applications are active suspension systems, in which it sense accelerations of the wheel.

The SMB433 can be used to monitor wheel movements. The sensor allows for the measurement of static as well as dynamic accelerations.

The control unit receives all the sensor signals and continuously adjusts the damping forces to a comfortable and safe level. The sensor can be used beyond chassis control for a range of applications, including tilt measurement for powered trunk lids.

Product benefits

  • Excellent signal performance
  • Robust communication
  • 2-wire interface
  • Suitable for usage in second level housings
  • Supports cost-efficient system architectures due to reduced harness and housing/PCB costs
  • RoHS compliant

reliable operation

due to self testing capability and digital data transmission

Technical Features

Type
Low-g acceleration sensor
Package
SOIC14n
Sensing axes
X
Range
±16 g
Interface
PSI5
Data resolution
10-bit
Sensitivity
30 LSB/g
Tolerance
±6%
Supply voltage
5 to 11 V
Supply current
<8 mA
Operating temperature
-40°C to 125°C

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Product information (satellite sensor variant)

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