QST (Shanghai) QMI8658 is a 6-axis MEMS IMU chip in a 2.5×3.0×0.86 mm 14-pin LGA package: gyro ±16~±2048 °/s with 15 mdps/√Hz noise density, accelerometer ±2~±16 g; I3C/I2C/SPI interfaces, −40 to +85 °C operation, on-chip temperature sensor with compensation and on-chip self-calibrated 9-axis fusion. Aimed at highly integrated designs such as drones and robot vacuums, it also serves as a chip-scale sensing option for robots.
COMPONENT
TDK InvenSense ICM-42688-P is the flagship 6-axis SmartIndustrial™ MotionTracking MEMS device for robotics and high-performance IoT, combining a 3-axis gyro and 3-axis accelerometer. Gyro noise is only 2.8 mdps/√Hz and accelerometer noise 70 µg/√Hz, with 6-axis current as low as 0.88 mA in low-noise mode; gyro full scale is selectable from ±15.6 to ±2000 dps and accelerometer from ±2 to ±16 g, with user-programmable digital filters. Host interfaces include 12.5 MHz I3C, 1 MHz I²C and 24 MHz SPI in a thin 2.5 × 3 × 0.76 mm 14-pin LGA package with drop-in 6-axis footprint compatibility. Officially targeted at AR/VR/XR, robotics and high-performance IoT, it is one of the most widely used consumer/industrial IMUs for joint and body attitude sensing on humanoid robots and robot dogs.
