返回Bosch

Bosch BMI423 Inertial Measurement Unit

Bosch BMI423 Inertial Measurement Unit (IMU) offers an extended measurement range and low power consumption. Designed for always-on sensing in wearables, these IMUs combine a measurement range of ±32g and ±4000dps with on-sensor functions, including bone-conduction-based voice activity detection, gesture recognition, and step counting. These IMUs offer high precision, intelligent power management, advanced on-sensor functionality, and high-dynamic-range motion capture. Specifications include low noise levels, 25µA power consumption during acceleration, and flexible interfaces, including I3C, I2C, and SPI. Bosch BMI423 IMUs are available in a 2.5mm x 3mm x 0.8 mm3 LGA package, making them ideal for space-constrained designs.

Features

  • Extended measurement range
  • Low power consumption
  • Voice activity detection (VAD) technology
  • High-dynamic-range motion capture
  • Advanced on-sensor functionality
  • High precision
  • Intelligent power management

Applications

  • User interface features in wearables and hearables
  • Robotic motion control
  • Drone navigation
  • Hinge angle and multi-tap detection in laptops
  • Gesture recognition in toys

Specifications

  • Flexible interfaces, 2x interrupt pins
    • I3C
    • I2C
    • SPI
  • 24-bit digital accelerometer and gyroscope resolution
  • Measurement ranges
    • Accelerometer - ±2g, ±4g, ±8g, ±16g, and ±32g
    • Gyroscope - ±125°/s, ±250°/s, ±500°/s, ±1000°/s, ±2000°/s, and ±4000°/s
  • 12.5Hz to 6.4kHz selectable output data rate range
  • Offset soldered, over life
    • ±35mg for the accelerometer
    • ±0.6°/s for the gyroscope
  • TCO
    • ±0.25mg/K for the accelerometer
    • ±0007°/s/K for the gyroscope
  • Sensitivity error
    • 0.25% for the accelerometer
    • 0.5% for the gyroscope
  • Typical noise density
    • 90µg/√Hz (≤8g) or 120µg/√Hz (≥16g) for the accelerometer
    • 0.0055°/s/√Hz for the gyroscope
  • Supply voltage ranges
    • 1.62V to 3.63V VDD
    • 1.08V to 3.63V VDDIO
  • 4KB on-chip FIFO data buffer
  • 25μA power consumption during acceleration operation
  • Power modes
    • High-performance mode
    • Normal mode
    • Low power mode (LPM)
    • Suspend mode
  • Current consumption
    • 615µA in high-performance mode
    • 322µA in low-power mode
    • 13.5µA in suspend mode
  • Interrupts
    • Active recognition
    • Motion detection
    • Step detection
    • Plug 'n' play step counter
    • Single/double/triple tap detection
    • Voice activity detection
    • Wrist wear wake-up
    • Wrist gesture detection
  • -40°C to +85°C temperature range
  • 2.5mm x 3mm x 0.8mm LGA package

Resources

Related IMUs

Bosch BMI270智能型超低功耗IMU

通过集成的即插即用计步器实现直观的手势、情景和活动识别。

Learn More关于Bosch BMI270智能型超低功耗IMU View Products与Bosch BMI270智能型超低功耗IMU相关

Bosch BMI323 6轴惯性测量单元 (IMU)

紧凑型低功耗惯性测量单元，非常适合可穿戴设备、耳戴式设备和移动设备。

Learn More关于Bosch BMI323 6轴惯性测量单元 (IMU) View Products与Bosch BMI323 6轴惯性测量单元 (IMU)相关

Bosch BMI330扩展温度IMU

集成一个3轴陀螺仪和一个3轴加速度计，实现精准的运动感应检测。

Learn More关于Bosch BMI330扩展温度IMU View Products与Bosch BMI330扩展温度IMU相关

Robotic Sensing Solutions

Bosch Sensortec机器人传感解决方案

MEMS传感解决方案，可实现精确的机器人运动、感知和交互。

Learn More关于Bosch Sensortec机器人传感解决方案
发布日期: 2026-01-07 | 更新日期: 2026-09-22