MEMS - modern accelerometers from STM

ST's state-of-the-art analog and digital accelerometers feature up to ±24g full scale, high resolution, smart embedded functionalities and advanced power-saving features.

A set of smart SPI/I2C programmable embedded functions, such as low-power mode, auto wake-up function, free-fall and 6D-orientation detection are integrated into the LIS331DLx family.

To address automotive applications, ST has designed the AISxxx accelerometers that offer extended temperature range and are AEC-Q100 qualified.

Analog accelerometers key features

• Analog output with additional multiplexer output
• Selectable full scale: ±2g/±6g
• < 0.5 mA current consumption in normal mode
• < 1 uA current consumption in power-down mode
• Bandwidth up to 2 kHz
• Resolution better than 0.5 mg @ 100 Hz
• Ultra-high stability over temperature: typ 0.2 mg/°C
• Operating temperature range: -40 to + 85 °C
• Embedded self test
• High shock survivability: 10,000g for 0.1 ms

Analog accelerometer diagram

Digital accelerometers key features

• Digital SPI, I2C interfaces - user selectable
• Selectable full scale: from ±2g up to ±24g
• < 11 uA current consumption in normal mode
• < 6 uA current consumption in low-power mode
• < 1 uA current consumption in power-down mode
• Resolution better than 1 mg
• Ultra high stability over temperature: typ 0.1 mg/°C
• Operating temperature range: -40 to + 85 °C
• Embedded self test
• High shock survivability: 10,000g for 0.1 ms
• Embedded FIFO
• Embedded temperature sensor
• Additional ADC channels for connection with external sensors

Digital accelerometer diagram

Applications

• Industrial (motion tracking and vibration monitoring)
• Mobile, gaming and pointing for smart interfaces
• Automotive
• Industrial (metering and tilt sensing)
• Free-fall detection and HDD protection

Design support

Masters provides engineering support and evaluation kits for rapid application development with MEMS. Check out the list of evaluation boards

Downloads