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Bosch Semiconductors

SMB200

Rollover sensor for airbag control units

Application & Technical Summary

SMB200

The SMB200 is a low-g accelerometer for automotive passive safety systems. It is specially designed for rollover applications.

The SMB200 communicates via bi-directional digital 16-bit SPI interface. Particularly in combination with the SMG10x roll-rate gyroscope, it becomes an ideal sensor combination for a complete roll-over system. This sensor detects vertical and lateral accelerations exerted onto the chassis during rollover events.

Product benefits

  • Slow on-chip offset regulation
  • Full self testing capability
  • RoHS compliant

Target application

  • Rollover sensing

reliable operation

due to full self-test capability and digital data transmission

Technical Features

Type
Dual axis low-g acceleration sensor
Package
SOIC16w
Sensing axes
X, Z
Range
±4.8 g
Interface
SPI (ECU)
Data resolution
10-bit
Sensitivity
100 LSB/g
Tolerance
±9%
Supply voltage

  • 3.3 V (digital)
  • 5 V (analog)

Supply current
<10 mA
Operating temperature
-40°C to 105°C

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