ICM-42670-P is a consumer-grade ultra-low-power six-axis MEMS IMU launched by TDK (InvenSense), integrating 3-axis gyroscope + 3-axis accelerometer, focusing on low power consumption, small size, and built-in APEX motion algorithm, aimed at wearable, TWS, IoT, etc. battery-powered devices, and is the cost-optimized version of ICM-42688-P.

I. Appearance and packaging form

Package: LGA-14 surface-mount package, SMT surface-mount, bulk production shipment

Size: 2.5 mm × 3.0 mm × 0.75 mm, thickness only 0.75mm, ultra-thin, suitable for narrow PCB space TDK products...

Appearance: black plastic square, silk-screened TDK logo and model ICM‑ 42670-P on the top, with a small positioning dot on one corner;Bottom exposed gold LGA pads, no protruding pins TDK InvenS...

Operating temperature: -40 ℃ ~ +85 ℃, ordinary consumer grade, non-automotive grade

2. Core performance parameters

1) Measuring range (software configurable)

Gyroscope: ±250/±500/±1000/±2000 dps;Noise 0.006 dps√Hz;Sensitivity error ± 1% TDK products...

Accelerometer: ± 2 g / ± 4 g / ± 8 g / ± 16 g; Noise 100 μg/∘Hz; Sensitivity error ± 1% TDK products...

Output: 16-bit ADC, built-in temperature sensor

2) Power consumption (main highlight) TDK InvenS...

Six-axis low noise full open: 0.55 mA

Only accelerometer low power mode (1.56 Hz): 4.4 μA

Sleep mode: 3.5 μA, with motion wake-up support

3) Communication and storage

Interface: I3C (12.5 MHz), I2C (1 MHz), SPI (24 MHz) three protocols, VDD/VDDIO 3.6-1.71 V wide voltage

FIFO cache: 2.25 KB, dual-channel programmable interrupt, relieves MCU burden, reduces overall system power consumption

III. Built-in APEX hardware motion function (on-chip operation, reducing MCU computing power)

Step counter, tilt detection, motion wake-up, significant motion detection

Free fall detection, low-g event detection

The FIFO output rate can be independently configured, and there is no need for the master to continuously read the raw data.

IV. Main Application Scenarios

Wearable devices: smart bracelets, watches, step counting, screen on when you raise your hand, posture recognition, low power consumption to extend battery life

TWS Bluetooth earbuds: wearing detection, tapping gesture, earphone posture detection

Consumer IoT: game controller, remote control, small AR glasses, smart home posture sensing

Asset tracker, small portable motion capture device

Not suitable: industrial high-precision attitude, professional drones, scenarios requiring extremely high zero-bias stability (choose ICM-42688-P)

V. Brief comparison with ICM-42688-P

form

project

ICM‑42670‑P

ICM‑42688‑P

Location

Cost-effective ultra-low power consumer version

High-performance, high-precision version

Six-axis power consumption

0.55 mA

0.88 m

Gyro noise

7 mdps/√Hz

2.8 mdps/√Hz

Range gear

4-speed gyroscope

8-speed gyroscope, supports external RTC clock

apply

Wearable, TWS, general IoT

AR-VR headsets, drones, high-precision attitude

lead

Both are compatible and can be directly replaced and debugged with hardware.

If you have technical or business inquiries, please contact Ms. Liu at 18277896808.