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Bosch Semiconductors for Automotive

SMA131

Acceleration sensor for non-safety relevant applications

Application & Technical Summary

SMA131

The SMA131 detects acceleration in three perpendicular axes (axyz) and allows tilt, motion, vibration or shock sensing regardless of the sensor mounting orientation.

The SMA131 is a digital 14-bit accelerator with different measurement ranges. The sensor combines our knowledge from consumer and automotive electronics.

Numerous programming options, a low signal noise and very small footprint make the SMA131 a highly versatile and easily applied acceleration sensor for non-safety automotive applications.

Product benefits

  • Extremely flexible application options
  • Cost-effective
  • Small footprint
  • Low power consumption – even at system level
  • Billion-fold applied technology (due to CE background)
  • AEC-Q100 qualification
  • RoHS compliant

Target application

  • Comfort access
  • Car key module
  • Wake-up functionality

economical

through 3 power-saving modes, which give a very low power consumption

Technical Features

Type
Acceleration sensor
Package
LGA12
Sensing axes
X, Y, Z
Range
±2 g,
±4 g,
±8 g
Interface
SPI, I²C
Data resolution
14-bit
Sensitivity
4,096 LSB/g
2,048 LSB/g
1,024 LSB/g
Sensitivity tolerance
±2.1%
Supply voltage
1.62 to 3.6 V
Supply current

  • 130 μA (normal operation)
  • 1 μA to 66 μA (power-safe modes)

Operating temperature
-40°C to 85°C
85°C to 105°C: extended operating temperature range, typical values only

Download

Technical product description

Software, sensor driver

Software

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