ICM-45686 is TDK InvenSence's new generation of high-performance six-axis MEMS IMU, equipped with BalancedGyro™Balanced gyroscope patent architecture, 3-axis gyroscope + 3-axis accelerometer integration, low noise, strong vibration resistance, excellent temperature drift suppression, dual interface design

I. Appearance and packaging form

Package: LGA-14, SMT surface mount, tape and reel delivery

Size: 2.5 mm × 3.0 mm × 0.8 mm, small volume, thickness 0.81 mm TDK InvenS...

Appearance: black plastic sealed square, top surface printed TDK logo, model ICM‑ 45686, one corner positioning mark point;Bottom LGA gold-plated pads, no protruding pins

Operating temperature: -40°C ~ +85°C, consumer grade, non-automotive grade, impact resistance up to 2000 gTDK Inven...

2. Core performance parameters

Measuring range (software configurable)

Gyroscope: ±15.6 / 31.3 / 62.6 / 125 / 250 / 500 / 1000 / 2000 / 4000 dps;Noise 3.8 mdps/∘Hz;Temperature drift ± 0.005 ° / s / ° C TDK InvenS...

Accelerometer: ±2 g / ±4 g / ±8 g / ±16 g / ±32 g; Noise 70 µg/√ Hz; Temperature drift ± 0.15 mg/°C TDK InvenS...

Built-in temperature sensor, maximum output rate 6400 Hz

Power consumption performance (core highlight)

Six-axis low noise mode: 0.42 mA @ 1600 Hz TDK InvenS...

Six-axis low power mode: 0.22 mA, the gyroscope can also run in low power mode, industry leading TDK InvenS...

Sleep mode: 2.2 μA, supports motion wake-up standby

Communication and storage

Main interface UI: I3C, I2C, SPI (24 MHz), VDD/VDDIO: 1.71-3.6 V wide voltage TDK InvenS...

AUX auxiliary interface (unique): SPI from mode can be configured to connect OIS anti-shake controller, or I2C master mode external magnetic sensor and other peripherals, without MCU relay

FIFO cache: 8 KB, dual-channel programmable interrupt, supports external RTC clock input, relieves master pressure TDK InvenS...

3. On-chip APEX hardware motion engine

Hardware completes event detection, reduces MCU computational overhead: step counter, tilt detection, single/double-tap gesture, hand-raise wake-up, motion wake-up, free fall, significant motion, low-g/high-g event detection TDK InvenS...。

IV. Main Application Scenarios

AR/VR glasses, VR controller: posture tracking, BalancedGyro™Anti-vibration, suppressing helmet drift, is the core market of this model.

High-end wearables, TWS headphones: gesture recognition, wear detection, step counting, high precision and low power consumption TDK InvenS...

Game controller, small drone flight control, small robot: large range ± 4000 dps, ± 32g for intense motion scenes TDK InvenS...

High-precision IoT attitude acquisition equipment

Limitation: Consumer device, not supported for in-vehicle use; There is no built-in magnetometer, and the nine-axis scheme requires an external magnetic sensor.

V. Comparison of ICM-45686 and ICM-42688-P

form

project

ICM‑45686

ICM‑42688‑P

Gyroscope architecture

BalancedGyro™Anti-vibration optimization

Traditional gyroscope architecture

Gyro noise

3.8 mdps/√Hz

2.8 mdps/√Hz

Maximum range of gyroscope

±4000 dps

±2000 dps

Acceleration measurement range

Maximum ±32 g

Maximum ±16 g

Six-axis typical power consumption

0.22‑0.42 mA

0.88 mA

Auxiliary AUX interface

✅Support

❌nothing

FIFO

8KB

2.25KB

Thermal drift & anti-vibration

Significant optimization

Ordinary level

Location

The new generation of high-performance flagship

The previous generation of high-performance IMU

✅Advantage

BalancedGyro™The patent structure, anti-vibration and temperature drift suppression are significantly better than the previous generation of consumer IMU, reducing the difficulty of attitude calculation TDK InvenS...

Power consumption is significantly reduced, and high performance is achieved while maintaining battery life.

The AUX dual interface can be directly connected to OIS or external sensors, and the system design is flexible.

Ultra-large 8KB FIFO, supports external RTC, suitable for high-frequency attitude acquisition

The range is extended to 4000 dps/32g, suitable for high-speed motion scenes.

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