SMA665
Central sensor for airbag control units
Application & Technical Summary

The SMA665 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, Z
|
Range
|
±120 g
|
Interface
|
SPI, supporting Bosch SPI or open SPI protocol
|
Data resolution
|
12-bit
|
Sensitivity
|
16 LSB/g
|
Tolerance
|
±7%
|
Supply voltage
|
3.3 or 6.7 V
|
Supply current
|
<6 mA
|
Operating temperature
|
-40°C to 125°C
|
-
Lead-free SOIC8n package: 6.0 mm × 4.9 mm × 1.75 mm (complete sensor)