ICM-42607-P | 6-axis MEMS IMU sensor

The ICM-42607-P is a high-performance 6-axis inertial measurement unit (IMU) sensor that integrates a 3-axis gyroscope and a 3-axis accelerometer. It is commonly used in scenarios requiring precise motion sensing and attitude tracking.

Get to Know ICM-42607-P 

Highlights

• Configurable host interface supporting I3CSM, I2C and SPI serial communication
• Up to 2.25 KB FIFO and 2 programmable interrupts
• Supports ultra-low power motion wake-up to minimize system power consumption
• Supports the lowest gyroscope and accelerometer noise among such IMUs
• Features the highest stability against temperature, shock (up to 20,000g) or SMT/bending-induced offsets, as well as immunity to out-of-band vibration-induced noise
• Supports a VDD operating range of 1.71V to 3.6V
• Supports a separate VDDIO operating range of 1.71V to 3.6V

Features

• Gyroscope Noise: 7 mdps / Hz &Accelerometer Noise: 100 µg/Hz
• Low-Noise mode 6-axis current consumption of 0.55 mA
• Low-Power mode support for always-on experience
• User selectable Gyro Full-scale range (dps):± 250/500/1000/2000
• User selectable Accelerometer Full-scale range (g): ± 2/4/8/16
• User-programmable digital filters for gyro, accel , and temp sensor
• APEX Motion Functions: Pedometer, Tilt Detection, Low-g Detection, Freefall Detection, Wake on Motion, Significant Motion Detection
• Host interface: 12.5 MHz I3CSM, 1 MHz I2C,24 MHz SPI

Physical and Electrical Specifications

• Package Dimensions: 2.5 × 3 mm, 14-pin LGA small package, suitable for integration in space-constrained devices.
• Operating Voltage: 1.71 V ~ 3.6 V (VDD and VDDIO)
• Operating Temperature: −40 °C ~ +85 °C (typical industrial range).
• Output Resolution: 16-bit data output.
• Impact Resistance: Up to 20,000 g, enhancing mechanical reliability.

Applications

1. Smartphones, Computers, Tablets
2. Smart Watches and Fitness Trackers
3. Augmented & Virtual Reality Headsets andControllers
4. Game Controllers
5. Drones and Robotics

Use ICM-42607-P

How does ICM-42607-P work?

1. The main modules and internal structure of the ICM-42607-P sensor: 

• Three-axis MEMS gyroscope
• Three-axis MEMS accelerometer
• I3CSM, I2C, and SPI serial communications interfaces to Host
• Self-Test
• Sensor Data Registers
• FIFO
• Interrupts
• Digital-Output Temperature Sensor
• Bias and LDOs
• Charge Pump
• Standard Power Modes

2. How the three-axis MEMS gyroscope detects rotational motion:

• Utilizing the Coriolis effect
• Mechanical displacement of the vibrating structure is detected by capacitance
• The signal is amplified, demodulated, filtered, and ultimately converted into digital values

3. How the three-axis MEMS accelerometer detects acceleration and outputs results relying on inertia:
The ICM-42607-P includes a 3-axis MEMS accelerometer. Acceleration along a specific axis causes the displacement of the detection mass in the MEMS structure, and the capacitive sensor detects this displacement. The ICM-42607-P architecture reduces the sensitivity of the accelerometer to manufacturing variations and thermal drift. When the device is placed on a flat surface, the measured values on the X and Y axes are 0g, and the measured value on the Z axis is +1g. The ratio factor of the accelerometer is calibrated in the factory and is nominally independent of the power supply voltage. The full-scale range of the digital output can be adjusted to ±2g, ±4g, ±8g, and ±16g.
4. Signal processing mechanism

Key points of the ICM-42607-P signal path:

• The signal starts from the ADC of the gyroscope/accelerometer.
• Accelerometer: Supports low noise mode and low power consumption mode.
• Gyroscope: Only supports low noise mode.
• Low noise mode:
• ADC → Unconfigurable AAF → Configurable first-order LPF
• Low power consumption mode (only for the accelerometer):
• ADC → Configurable average filter
• After filtering, the ODR (Output Data Rate) is selected
• Finally, the FSR (Full Scale Range) is selected to determine the output range 

QFA

Q1: What is the working principle of the accelerometer?
The acceleration along a specific axis causes the MEMS to detect a change in mass position, and the capacitive sensor detects this displacement and converts it into a digital signal.
Q2: Which working modes are supported?
Accelerometer: Supports low-noise mode and low-power mode
Gyroscope: Only supports low-noise mode
Q3: Has the factory calibration been performed?
Yes, the scale factor of the accelerometer has been calibrated in the factory and is nominally independent of the power supply voltage.