ICM-42670-L: Ultra-Low Power 6-Axis IMU for Wearables, TWS, and AR/VR | In-Stock Supply from TDK Inv

Product Overview

The ICM-42670-L is a high-performance, ultra-low power 6-axis MEMS MotionTracking™ IMU from TDK InvenSense (formerly InvenSense Inc., acquired by TDK Corporation in 2016). This compact sensor integrates a 3-axis gyroscope and a 3-axis accelerometer into a single LGA-14 (2.5mm × 3mm) package, making it an ideal solution for battery-powered devices where power consumption and PCB space are critical design constraints.

Whether you're designing a next-generation TWS earbud, a smartwatch, an AR/VR headset, or a drone flight controller, the ICM-42670-L delivers exceptional motion tracking performance at industry-leading power levels.

Key Specifications

Gyroscope Performance

Accelerometer Performance

Core Features & Advantages

Industry-Leading Ultra-Low Power

The ICM-42670-L sets the benchmark for power efficiency in 6-axis IMUs. With 0.55mA total current in low-noise 6-axis mode, the accelerometer can run independently at just 4µA, and sleep mode consumes a mere 3.5µA. This translates to weeks or months of additional battery life in wearables and hearables — a critical advantage in today's power-sensitive IoT designs.

APEX On-Chip Motion Processing Engine

Unlike conventional IMUs that require constant host processor intervention, the ICM-42670-L includes TDK's proprietary APEX (Advanced Pedometer and Event Detection – NeXt Generation) motion processing engine. This on-chip digital block processes accelerometer data independently and asserts motion-specific interrupts, including:

• Pedometer – Step counting with step detection interrupt

• Tilt Detection – Interrupt when tilt angle exceeds 35° for a programmable duration

• Freefall Detection – Device freefall detection with duration output

• Low-G Detection – Interrupt when acceleration falls below a programmable threshold

• Wake-on-Motion (WoM) – Motion-triggered wake from sleep mode

• Significant Motion Detector – Detects meaningful motion events

The APEX engine reduces main processor load, lowers system power consumption, and simplifies motion algorithm development.

High Stability & Reliability

The ICM-42670-L offers class-leading performance under real-world conditions:

• 20,000g shock survivability ensures reliable operation during drops and impacts

• Outstanding temperature stability (<0.01°/s/°C) minimizes drift across operating range

• Exceptional vibration rejection protects against out-of-band noise interference

• Wafer-level sealed and bonded MEMS structure enhances resistance to mechanical shock and thermal expansion

Target Applications

The ICM-42670-L is designed for applications where power efficiency, accuracy, and compact size are paramount.

Wearables (Smartwatches & Fitness Trackers)

• 24/7 step counting and activity recognition via APEX engine

• Sleep quality monitoring and wake detection

• Gesture-based UI interactions

• E-compass tilt compensation (with external magnetometer)

Hearables (True Wireless Stereo Earbuds)

• Ultra-low power motion wake-on-wear detection (as low as 4µA)

• Head tracking for spatial audio in TWS earbuds

• Tap gesture recognition for playback control

• In-ear/out-of-ear state detection

AR/VR Headsets

• Low-latency head tracking for immersive experiences

• Hand and gesture interaction via APEX gesture recognition

• Controller 6-DOF pose tracking

• Reduced reliance on external cameras for gesture input

Drones & UAVs

• Flight attitude stabilization using high-precision gyroscope data

• Sensor fusion support for autonomous navigation

• Lightweight design with minimal power draw (critical for flight time)

Robotics & Automation

• Mobile robot dead-reckoning and localization

• Robot arm motion control and vibration monitoring

• Smart home appliances (e.g., washing machine imbalance detection via freefall detection)

Smart Home & IoT Devices

• TV remote controls with gesture-based navigation

• Smart appliance state monitoring (tilt, motion, freefall)

• Industrial asset tracking and vibration monitoring

ICM-42670 Series: Which Model Should You Choose?

TDK InvenSense offers two primary variants of the ICM-42670 series:

Both models share identical:

• LGA-14 package (2.5mm × 3mm)

• ±16g / ±2000dps full-scale ranges

• 16-bit output resolution

• APEX motion processing engine

• 2.25KB FIFO

• -40°C to +85°C operating temperature

• 20,000g shock survivability

Recommendation for procurement professionals:

• Choose ICM-42670-L for cost-optimized designs where the slightly higher current is acceptable and I3C is not required

• Choose ICM-42670-P for power-optimized and performance-critical applications requiring I3C interface and minimal current draw

Supply Chain Alert: Current Market Conditions

Critical Lead Time Situation

The ICM-42670 series is currently experiencing significant supply constraints across global distribution channels:

• Mouser Electronics: Current on-hand inventory is only 3,140 units as of Q2 2026, with 10,000 units on order expected July 21, 2026. Factory lead time for new orders has extended to 26 weeks

• DigiKey: Currently shows 32,564 units in stock with 20-week manufacturer lead time

• LSCSC (LCSC): 9,434 units of ICM-42670-P in stock; 4,231 units of ICM-42670-L in stock

Why Is the ICM-42670 in Short Supply?

1. Explosive demand from wearables and AR/VR – TWS earbuds now require head tracking for spatial audio; smartwatches demand always-on motion sensing

2. 8-inch wafer capacity constraints – Automotive and industrial chips continue to consume significant 8-inch wafer fab capacity

3. Limited drop-in alternatives – High barriers exist in ultra-low power IMUs with integrated I3C interfaces

Our Supply Advantage

As a trusted electronic component distributor with strong TDK InvenSense supply chain relationships, we offer:

• Competitive volume pricing starting from ¥7.20–¥7.41 per unit at 500+ quantities for ICM-42670-L

• Multi-source inventory across all major distribution channels

• Short lead time options for urgent production requirements

• Engineering support for integration and pin-compatible alternative identification

Comparison: ICM-42670-L vs. Competitive IMUs

Why Source the ICM-42670-L from Us?

As an electronic components distributor serving engineers and procurement professionals, we understand your needs:

For Engineers:

• ✅ Verified authentic TDK InvenSense inventory

• ✅ Datasheets and technical documentation available upon request

• ✅ Engineering support for integration and sensor fusion development

• ✅ Sample quantities available for prototyping

For Procurement Professionals:

• ✅ Competitive pricing at volume (ICM-42670-L)

• ✅ Flexible order quantities from single units to full reels (5,000 pcs)

• ✅ Multiple logistics options for global delivery

• ✅ Lead time management support with advanced allocation

⚠️ Lead time note: ICM-42670-P factory lead times have extended to 26 weeks due to strong demand and capacity constraints. Contact us for real-time availability and alternative sourcing options — we maintain strong supply relationships to serve your urgent requirements.

Get in Touch

Whether you're in the prototyping phase or ramping to mass production, we're here to help with:

• Stock availability checks – Real-time ICM-42670-L and ICM-42670-P inventory

• Competitive quotes – Volume pricing for production quantities

• Technical support – Datasheets, application notes, and reference designs

• Alternative solutions – If lead times for your preferred variant are too long