Inertial Measurement Unit: BMI423
The BMI423 Inertial Measurement Unit is designed for always-on applications like wearables, hearables, and robotics devices. It delivers enhanced robustness and precision, combining an extended measurement range with exceptionally low power consumption.
Experience intelligent Voice Activity Detection (VAD) that significantly conserves power and boosts privacy by activating microphones only when needed.
Its capabilities include an extended acceleration range of up to ±32g and a gyroscope range of up to ±4000 dps – double that of its predecessor. This allows the BMI423 to capture even the most dynamic movements with precision. Whether analyzing a golf swing, a tennis stroke, or intricate robotic arm movements, it provides accurate results where conventional sensors reach their limits.
This powerful sensor packs advanced functionality into a compact 2.5 x 3.0 x 0.83 mm³ footprint, ideal for smart, energy-efficient devices.
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Technical data
Gyroscope (G): 24-bit
G: ±125°/s, ±250°/s, ±500°/s, ±1000°/s, ±2000°/s, ±4000°/s
(G): ± 0.6 °/s
(G): ± 0.007 °/s/K
(G): 0.4%
120 µg/√Hz (≥16g)
(G): 0.005 °/s/√Hz
2 Interrupt Pins
1.08 ... 3.63 V (VDDIO)
Motion detection
Step detection
Plug ’n’ play step counter
Single/double/triple tap detection
Voice activity detection
Wrist wear wake-up
Wrist gesture detection
