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Bosch Semiconductors for Automotive

SMA660

Central sensor for airbag control units

Application & Technical Summary

SMA6xy

The SMA660 is a dual channel, high-g accelerometer with bi-directional SPI interface. The sensor is intended for airbag systems, providing front or side crash information or for verifying satellite sensor readings.

Product benefits

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

Target application

  • Central sensor in airbag ECUs

reliable operation

due to broad operating temperature range

Technical Features

Type
Dual axis high-g acceleration sensor
Package
SOIC8n
Sensing axes
X, Y
Range
±120 g
Interface
SPI, supporting Bosch SPI or open SPI protocol
Data resolution
12-bit
Sensitivity
16 LSB/g
Tolerance
±5%
Supply voltage
3.3 or 6.7 V
Supply current
< 6 mA
Operating temperature
-40°C to 125°C

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