Automotive Airbag Products from Freescale
June 20, 2010
Freescale Semiconductor, Austin, TX, offers an inertial satellite sensor family and mixed signal analog IC for advanced airbag systems that use the emerging Peripheral Sensor Interface 5 (PSI5) protocol as well as an ECU inertial sensor family. The MEMS-based MMA5xxxW is a PSI5 X- or Z-axis satellite inertial sensor in a QFN package with ±60 g to ±480 g F.S. range and a selectable low-pass filter. The MC33789 airbag system basis chip (SBC) can be used to detect seat belt switch input states and communicate with remote crash sensors via its 4 satellite sensor PSI5 master interfaces. The MEMS-based dual-axis MMA68xxQ digital inertial sensor family is designed as a main crash sensor or as a safing sensor in airbag applications and features a ±20 g to ±120 g F.S. range.
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