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Bosch Semiconductors for Automotive

SMA720

Central sensor for airbag control units

Application & Technical Summary

SMA7xy

The SMA720 is a dual channel accelerometer with bi-directional SPI interface. The sensor is intended for airbag systems, providing roll-over information.

Product benefits

  • Triggerable offset adjustment
  • RoHS compliant
  • Developed for systems with requirements up to ASIL D

Target application

  • Central sensor in airbag ECUs

Vast field experience

gained from hundreds of millions sensors is the fundament of the SMA7xy

Technical Features

Type
Dual axis high-g acceleration sensor
Package
SOIC8n
Sensing axes
X, Z
Range
±128 g (X)
±32 g (Z)
Interface
SafeSPI
Data resolution
14 bit
Tolerance
±5 % (ax),
±7 % (az),
Supply voltage
3.3, 5 or 6.7 V
Supply current
< 5 mA
Operating temperature
-40°C to 125°C

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