ICM-42688-P - 6轴MEMS IMU，带2KB FIFO | TDK InvenSense
料号： ICM-42688-P ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.68 | $2,340.00 |
| 1,000 | $4.16 | $4,160.00 |
ICM-42688-P 概述
IMU（惯性测量单元）是一种利用陀螺仪和加速度计测量角速率和线性加速度的传感器。ICM-42688-P将这些功能集成到单个封装中，为运动跟踪提供高精度和低噪声。IMU在需要方向和运动检测的应用中至关重要，例如飞行控制器、可穿戴设备和导航系统。ICM-42688-P属于更广泛的运动传感器类别，该类别包括加速度计、陀螺仪和磁力计，并且是传感器融合层级中的关键组件。
主要特性包括陀螺仪噪声密度为2.8 mdps/√Hz，加速度计噪声密度为70 µg/√Hz，陀螺仪和加速度计的可编程输出数据速率均高达32 kHz。该器件提供2 kB FIFO以减少总线流量和系统功耗，并支持1.71 V至3.6 V的宽电源电压范围。它还包括可编程中断和用于高级运动处理的数字运动处理器（DMP）。
ICM-42688-P采用先进的MEMS技术和低功耗架构，在低噪声模式下典型电流消耗为0.9 mA，在低功耗模式下为0.45 mA。该器件的工作温度范围为-40°C至+85°C，并符合RoHS标准。其小尺寸和低功耗使其成为电池供电和空间受限设计的理想选择。
典型应用包括无人机飞行控制器，ICM-42688-P在其中提供稳定飞行所需的低噪声和高输出速率；机器人，用于精确的运动控制和方向传感；以及AR/VR头显，用于精确的头部跟踪。该器件还用于工业监测和可穿戴健康设备。
使用ICM-42688-P进行设计时，请确保正确的PCB布局，在电源引脚上放置足够的去耦电容，并仔细布线I2C/SPI线路以最小化噪声。该器件同时支持I2C和SPI，为系统集成提供了灵活性。
直接替换替代料： ICM-42688-P ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ICM-42688-P （相同外形与封装尺寸） ——差异在于 Accelerometer Noise Density, Gyroscope Noise Density, Interface, Package.
快速对比工具——选择替代料号进行并排对比：
BMI270
✓ 有现货
$2.1 / 个
查看数据手册 →BMI088
✓ 有现货
$7.2 / 个
查看数据手册 →LSM6DS3TR-C
✓ 有现货
$0.875 / 个
查看数据手册 →ICM-42688-V
📋 参考替代料（不在目录中）
ICM-42688-PC
📋 参考替代料（不在目录中）
ISM330DHCX
📋 参考替代料（不在目录中）
ICM-42688-P 最大额定值与电气特性
| 传感器类型 | Accelerometer, Gyroscope, 6 Axis |
| 封装 | 14-pin LGA, 2.5 x 3.0 x 0.91 mm |
| 接口 | I2C, SPI, I3C |
| Gyroscope Full Scale Range | ±15.5 dps to ±2000 dps |
| Accelerometer Full Scale Range | ±2 g to ±16 g |
| Gyroscope Noise Density | 2.8 mdps/√Hz |
| Accelerometer Noise Density | 70 µg/√Hz |
| Output Data Rate (Gyro) | Up to 32 kHz |
| Output Data Rate (Accel) | Up to 32 kHz |
| FIFO Size | 2 kB |
| 电源电压 | 1.71 V to 3.6 V |
| Current Consumption (Low-Noise Mode) | 0.9 mA |
| Current Consumption (Low-Power Mode) | 0.45 mA |
| 工作温度 | -40°C to +85°C |
| RoHS | Compliant |
ICM-42688-P 引脚配置
| 引脚 1 | VDD — Power supply (1.71V to 3.6V) |
| 引脚 2 | GND — Ground |
| 引脚 3 | SCL/SPC — I2C clock or SPI clock |
| 引脚 4 | SDA/SDI — I2C data or SPI data in |
| 引脚 5 | ADO/SDO — I2C address select or SPI data out |
| 引脚 6 | CS — Chip select (active low) |
| 引脚 7 | INT1 — Interrupt 1 |
| 引脚 8 | INT2 — Interrupt 2 |
| 引脚 9 | RESV — Reserved, connect to GND |
| 引脚 10 | VDDIO — I/O supply voltage |
| 引脚 11 | GND — Ground |
| 引脚 12 | GND — Ground |
| 引脚 13 | GND — Ground |
| 引脚 14 | GND — Ground |
典型应用
ICM-42688-P 适用于 6 应用s: Drone Flight Controllers, Robotics, AR/VR Headsets, Industrial Monitoring, Wearable Health Devices, Navigation Systems.
Drone Flight Controllers
The ICM-42688-P is ideal for drone flight controllers due to its low noise density (2.8 mdps/√Hz gyro) and high output data rate (up to 32 kHz), which enable precise attitude estimation and stable flight. Its 2 kB FIFO reduces bus traffic, allowing the flight controller to read sensor data efficiently. The device's small 2.5 x 3.0 mm package fits compact drone designs, and its low power consumption (0.9 mA) extends battery life. According to a 2026 UAV model blog, the ICM-42688-P is the preferred gyro for Betaflight 4.5+ builds.
推荐
Robotics
In robotics, the ICM-42688-P provides precise motion sensing for orientation and movement control. Its low noise and high ODR enable accurate feedback for balance and navigation algorithms. The device's ultralow-power wake-on-motion feature allows the robot to remain in a low-power state until movement is detected, conserving battery life. The 2 kB FIFO helps manage sensor data efficiently, reducing processor load. The ICM-42688-P's wide supply voltage range (1.71 V to 3.6 V) makes it compatible with various robot power systems.
推荐
AR/VR Headsets
The ICM-42688-P is well-suited for AR/VR headsets, where accurate head tracking is critical. Its low noise density and high ODR (up to 32 kHz) enable smooth and responsive motion tracking, reducing motion sickness. The device's small package and low power consumption are ideal for wearable devices. The 2 kB FIFO allows efficient data transfer to the host processor, minimizing latency. According to the TDK datasheet, the ICM-42688-P is designed for high-performance motion tracking in consumer electronics.
推荐
Industrial Monitoring
For industrial monitoring, the ICM-42688-P provides reliable vibration and motion sensing for predictive maintenance and equipment health monitoring. Its wide temperature range (-40°C to +85°C) and low noise ensure accurate measurements in harsh environments. The device's programmable interrupts can trigger alerts on threshold crossings, reducing the need for continuous polling. The 2 kB FIFO helps manage data bursts, and the I2C/SPI interfaces allow easy integration with industrial controllers.
推荐
Wearable Health Devices
The ICM-42688-P is suitable for wearable health devices, such as fitness trackers and smartwatches, due to its low power consumption (0.45 mA in low-power mode) and small footprint. It can detect motion and orientation for activity tracking and fall detection. The ultralow-power wake-on-motion feature allows the device to remain in a low-power state until movement is detected, extending battery life. The 2 kB FIFO reduces the frequency of host processor wake-ups, further saving power.
推荐
Navigation Systems
In navigation systems, the ICM-42688-P provides inertial sensing for dead reckoning and sensor fusion with GPS. Its low noise and high ODR enable accurate velocity and position estimation. The device's 2 kB FIFO allows efficient data collection, and its programmable interrupts can synchronize with external sensors. The wide supply voltage range and low power consumption make it suitable for portable navigation devices. According to the TDK datasheet, the ICM-42688-P is designed for high-performance motion tracking.
推荐
推荐产品汇总
工程参考数据： ICM-42688-P ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ICM-42688-V | ICM-42688-PC | BMI270 | BMI088 | LSM6DS3TR-C | ISM330DHCX |
|---|---|---|---|---|---|---|---|
| Package | 14-pin LGA | 14-pin LGA | 14-pin LGA | 14-pin LGA | 16-pin LGA | 14-pin LGA | 14-pin LGA |
| Brand | TDK InvenSense | TDK InvenSense | Tokmas | Bosch | Bosch | STMicroelectronics | STMicroelectronics |
关键差异点
- 更低的陀螺仪噪声密度 （对比 BMI270)
- 更高的输出数据速率 （对比 BMI270)
- 支持I3C接口 （对比 LSM6DS3TR-C)
设计说明
将去耦电容（100 nF和1 µF）放置在靠近VDD和VDDIO引脚的位置，以确保稳定的电源供应。在传感器下方使用实心接地平面以最小化噪声。以受控阻抗布线I2C/SPI线路并保持短线，以减少信号完整性问题。根据TDK数据手册，正确的布局对于实现规定的噪声性能至关重要。
ICM-42688-P的工作电压为1.71V至3.6V。确保电源电压在此范围内，并且VDDIO设置为主机接口的适当电平。在低功耗模式下，器件消耗0.45 mA，但在启动或高ODR操作期间，电流可能突增。使用具有足够余量的低压差稳压器以保持电压稳定。
避免将传感器放置在热源或高频组件附近，这可能导致热漂移或电噪声。ICM-42688-P对温度敏感，如果未正确隔离可能会漂移。此外，确保通过ADO引脚正确配置I2C地址以避免地址冲突。根据SlimeVR文档，ICM-42688对温度敏感且漂移迅速，因此热管理至关重要。
合规信息
RoHS compliant per TDK datasheet. Other compliance info not specified in provided data.
