SMA774
Satellite sensor for airbag systems
Application & Technical Summary
The SMA774 is a dual-channel, high-g accelerometer with PSI5 interface. The sensor is intended for airbag systems, providing front or side crash information.
Power and digital communication are handled via the same 2-wire connection.
Product benefits
- Complies with AK-LV 27 specification
- Robustness against microcuts
- Triggerable offset adjustment
- RoHS compliant
- Developed for systems with requirements up to ASIL D
Target application
- Satellite sensor in airbag systems
reliable operation
due to broad operating temperature range
Technical Features
Type
|
Dual axis high-g acceleration sensor
|
Package
|
SOIC8n
|
Sensing axes
|
X, Z
|
Range
|
±30/60 g
|
Interface
|
PSI5 (PAS)
|
Data resolution
|
10-bit or 14-bit
|
Sensitivity
|
4/2/1 LSB/g
|
Tolerance
|
±7%
|
Supply voltage
|
4.5 to 11 V
|
Supply current
|
< 6 mA (sink current 26 mA)
|
Operating temperature
|
-40°C to 125°C
|