Motion sensor combo ICs target vehicle dynamics

ST has launched an automotive sensor platform that combines multi-axis accelerometers and angular-rate sensors in a single package. The platform is designed to extend active and passive safety systems and driver-assistance features across vehicle categories, from premium to mass-market. Applications include crash protection, rollover detection, airbag deployment, vehicle stability control, and radar beam stabilization.

The sensors feature internal diagnostics and support SafeSPI, a serial peripheral interface for automotive safety. ST’s first four offerings following its integration of NXP’s sensors division are:

• NCS1012BAEP: z-axis (yaw) angular-rate sensor and xy low-g accelerometer
• NCS1012CAEP: x-axis (roll) angular-rate sensor and yz low-g accelerometer
• NCS1012EAEP: x-axis (roll) angular-rate sensor and xy medium-g accelerometer
• NCS10135AEP: z-axis (yaw) angular-rate sensor and xyz low-g accelerometer

Angular-rate sensors offer full-scale ranges of ±125 dps, ±250 dps, or ±350 dps, with integrated low-pass filtering (12.5–400-Hz cutoff options) and operation from −40°C to +105°C. Low-g accelerometers cover ±1.50 g to ±34 g, while medium-g versions cover ±15.5 g to ±150 g and feature an independent signal chain to minimize noise. Both acceleration sensor types feature low offset and drift over the automotive temperature range and integrated low-pass filtering.

The combo sensors are now in production in 24-pin QFN packages with wettable flanks.

STMicroelectronics

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