SMI720 | Combined inertial sensor for rollover sensing in airbag ECUs

Safe and economical integrated sensor solution, applicable in systems up to ASIL C requirements

The SMI720 is a dual-axis (Ωx, az) combined inertial sensor (gyro and accelerometer), specifically designed for rollover applications.

Due to the combination of three chips in one housing, the SMI720 is able to measure data on the vehicle’s rotation around its roll axis (rollover gyro). In addition, it delivers data on vertical acceleration to determine the dynamic state of the vehicle and to check the plausibility of the rotation rate signal.

Benefits

Excellent vibration robustness and offset stability

Wide range of customized signal monitoring options

RoHS compliant

Target applications

Roll-over sensing

技术要求


类型	Combined inertial sensor
封装	BGA64
感应轴	X (Ω), Z (a)
范围	±300 °/s (Ω ±5 g (a)
接口	SPI
数据解析	16 bit
灵敏度	100 LSB/°/s (Ω) 5,000 LSB/g (a)
公差	±5% (Ω) ±6% (a)
电源电压	3.3 V
电源电流	< 21 mA
工作温度	-40°C to 125°C

Ball grid array package (BGA): 7 mm x 7 mm x 1.5 mm

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