Bosch BMI160

The BMI160 is an inertial measurement unit (IMU) consisting of a state-of-the-art 3-axis, low-g accelerometer and a low power 3-axis gyroscope. It has been designed for low power, high precision 6-axis and 9-axis applications in mobile phones, tablets, wearable devices, remote controls, game controllers, head-mounted devices and toys. The BMI160 is available in a compact 14-pin 2.5 × 3.0 × 0.83 mm³ LGA package. When accelerometer and gyroscope are in full operation mode, power consumption is typically 925 μA, enabling always-on applications in battery driven devices. The BMI160 offers a wide VDD voltage range from 1.71V to 3.6V and a VDDIO range from 1.2V to 3.6V, allowing the BMI160 to be powered at 1.8V for both VDD and VDDIO. Due to its built-in hardware synchronization of the inertial sensor data and its ability to synchronize data of external devices such as geomagnetic sensors, BMI160 is ideally suited for augmented reality, gaming and navigation applications, which require highly accurate sensor data fusion. The BMI160 provides high precision sensor data together with the accurate timing of the corresponding data. The timestamps have a resolution of only 39 μs. Further Bosch Sensortec sensors, e.g. geomagnetic (BMM150) can be connected as slave via a secondary I²C interface. In this configuration, the BMI160 controls the data acquisition of the external sensor and the synchronized data of all sensors is stored the register data and can be additionally stored in the built-in FIFO. The integrated 1024 byte FIFO buffer supports low power applications and prevents data loss in non-real-time systems. The intelligent FIFO architecture allows dynamic reallocation of FIFO space for accelerometer, gyroscope and external sensors, respectively. For typical 6-DoF applications, this is sufficient for approx. 0.75 s of data capture. In a typical 9-DoF application - including the geomagnetic sensor - this is sufficient for approx. 0.5s Like its predecessors, the BMI160 features an on-chip interrupt engine enabling low-power motion-based gesture recognition and context awareness. Examples of interrupts that can be issued in a power efficient manner are: any- or no-motion detection, tap or double tap sensing, orientation detection, free-fall or shock events. The BMI160 is Android 5.0 (Lollipop) compatible, and in the implementation of the Significant Motion and Step Detector interrupts, each consumes less than 20μA The smart built-in power management unit (PMU) can be configured, for example, to further lower the power consumption by automatically sending the gyroscope temporarily into fast startup mode and waking it up again by internally using the any-motion interrupt of the accelerometer. By allowing longer sleep times of the host, the PMU contributes to significant further power saving on system level. Besides the flexible primary interface (I²C or SPI) that is used to connect to the host, BMI160 provides an additional secondary interface. This secondary interface can be used in SPI mode for OIS (optical

• High performance accelerometer and gyroscope (hardware synchronized)
• Very low power consumption: typ. 925 μA (accelerometer and gyroscope in full operation)
• Android Lollipop compatible: significant motion and step detector / step counter (5 μA each)
• Very small 2.5×3.0 mm² footprint, height 0.83 mm
• Built-in power management unit (PMU) for advanced power management
• Power saving with fast start-up mode of gyroscope
• Wide power supply range: 1.71V ... 3.6V
• Allocatable FIFO buffer of 1024 bytes (capable of handling external sensor data)
• Hardware sensor time-stamps for accurate sensor data fusion
• Integrated interrupts for enhanced autonomous motion detection
• Flexible digital primary interface to connect to host over I²C or SPI
• Extended I²C mode with clock frequencies up to 1 MHz
• Additional secondary high speed interface for OIS application
• Capable of handling external sensor data (e.g. geomagnetic or barometric pressure sensors by Bosch Sensortec)

• Augmented Reality
• Indoor navigation
• 3D scanning / indoor mapping
• Advanced gesture recognition
• Immersive gaming
• 9-axis motion detection
• Air mouse applications and pointers
• Pedometer / step counting
• Advanced system power management for mobile applications
• Optical image stabilization of camera modules
• Free-fall detection and warranty logging