SMI720
Combined inertial sensor for rollover sensing in airbag ECUs
Application & Technical Summary
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.
Product benefits
- Excellent vibration resistance and offset stability over temperature and lifetime
- Wide range of customized signal monitoring options
- RoHS compliant
Target application
- Rollover sensing
safe and economical
integrated sensor solution, applicable in systems up to ASIL C requirements
Technical Features
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Type
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Combined inertial sensor
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Package
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BGA64
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Sensing axes
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X (Ω), Z (a)
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Range
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Interface
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SPI
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Data resolution
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16-bit
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Sensitivity
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Tolerance
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Supply voltage
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3.3 V
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Supply current
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< 21 mA
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Operating temperature
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-40°C to 105°C
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-
Ball grid array package (BGA): 7 mm x 7 mm x 1.5 mm
