Sensors

Six-Axis IMU added to ultra-low-power MEMS sensors

22nd November 2018
Alex Lynn

A new six axis Inertial Measurement Unit (IMU) from STMicroelectronics, the ISM330DLC, has extended STMicroelectronics’ family of ultra-low power MEMS sensors for industrial applications, which combine high accuracy and robustness with long-term availability assured by ST’s ten-year longevity program.

Containing a three-axis accelerometer and a three-axis gyroscope with user-selectable full-scale up to ±16g and ±2000dps respectively, the ISM330DLC provides high measurement resolution and smart energy-saving features to enable long-lasting battery-powered industrial devices. Suited for applications such as industrial IoT systems, robots, drones, platform stabilisers, and telematics, its wide accelerometer bandwidth up to 3kHz also allows use in vibration-monitoring and compensation systems.

The ISM330DLC consumes just 0.5mA in normal combination mode and 0.75mA in high-performance mode. In addition, with a large integrated FIFO that lets the host system retrieve data efficiently, as well as smart features and interrupts including tilt detection, free-fall, wakeup, 6D/4D orientation, click, and double-click, the ISM330DLC enables power-conscious application design to achieve additional energy savings. There is also a sensor-hub feature for efficiently collecting data from additional external sensors.

Extensive industrial-grade design features are built-in, including a dedicated configurable low-latency signal-processing path, low noise, and filtering optimised to ensure closed-loop control stability. The signal path can be independently configured to make gyroscope or accelerometer data available through an auxiliary SPI interface.

As a richly featured device architected for high accuracy, stability, and reliability, the ISM330DLC also contains a temperature sensor and built-in self-test both for the gyroscope and accelerometer.

The ISM330DLC is in production now, as a 2.5x3x0.83mm plastic land-grid array (LGA) system-in-package, priced from $2.90 for orders of 1,000 pieces.

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