Bosch Automotive Electronics – 3-axis acceleration sensor for motion control in navigation and telematic systems SMA130
The SMA130 is a new compact, triaxial acceleration sensor for non-safety automotive applications, packaged in a LGA pack-age. With its ultra-small footprint of only 2 mm x 2 mm and its very low power consumption, it provides a cost-efficient one-chip solution especially for infotainment systems like in-dash naviga-tion or telematic on-board units.
The SMA130 detects accelerations in three perpendicular axes and allows tilt, motion, vibration or shock sensing regardless of the mounting orientation of the sensor. In particular the SMA130 eliminates the need for different sensor housings for slant-angle correction in in-dash navigation systems.
The SMA130 contains a digital 14-bit triaxial acceleration sensor with different measurement ranges between ±2 g and ±16 g.
Numerous programming options, a low signal noise and a very small footprint make the SMA130 a highly versatile and easily applicable accelerometer. For individual adjustments to the application, the user can easily choose via the digital interface between four different measurement ranges and several low pass filtering options. In addition, an 8-bit temperature signal is available. An embedded self-test ensures signal integrity.
The sensor accepts supply voltages between 1.62 V and 3.6 V and can be operated in a temperature range between -40 °C and +85 °C. The sensor is RoHS compliant and qualified according to AEC-Q100.
The sensor features five power-safe modes (current consump-tion between 1 μA and 66 μA) with fast wake up times below 2 ms. These user-programmable modes can be used for power-critical applications with low signal sampling rates.
Sensor features and customer benefits:
- Low noise and low power 3DoF MEMS accelerometer:
- 14-bit triaxial accelerometer (±2 g,…,±16 g)
- Temperature sensor output
- Embedded filters with programmable bandwidth
- Low power consumption
- Embedded self-test
- AEC-Q100 qualification
Ultra small, precise and flexible – a one fits all solution:
- 3DoF (degrees of freedom) allowing motion or tilt control regardless of sensor mounting orientation
- Very small and easy to integrate single-chip sensor
- Reliable sensor signals over time and temperature
- Wide range of applications due to multiple user programmable settings