LIS2MDLTR - 3-Axis Digital Magnetometer | STMicroelectronics | IoT & Navigation
料号： LIS2MDLTR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.1263 | $3.13 |
LIS2MDLTR 概述
A magnetometer is a sensor that measures the strength and direction of magnetic fields. In the context of electronic systems, a 3-axis magnetometer detects the Earth's magnetic field to determine orientation relative to magnetic north, functioning as an electronic compass. It is often combined with accelerometers and gyroscopes in inertial measurement units (IMUs) to provide full orientation tracking. The LIS2MDLTR belongs to the category of magnetic field sensors, which are part of the broader sensor family used in navigation, robotics, and consumer electronics.
Key features of the LIS2MDLTR include a wide magnetic field range of ±50 gauss, a selectable output data rate from 10 Hz to 100 Hz, and a 16-bit resolution that provides fine granularity for precise heading calculations. The device also features an embedded temperature sensor, a programmable interrupt generator, and a self-test capability. Its low power consumption, with a typical current draw of 0.6 mA in normal mode and 1 µA in power-down mode, extends battery life in portable devices.
The LIS2MDLTR uses a magneto-resistive sensing element that changes resistance in response to magnetic fields, processed by an integrated analog-to-digital converter (ADC) and digital signal processing chain. The device includes a FIFO buffer to store measurement data, reducing host processor wake-up frequency. The I2C interface supports up to 400 kHz, while the SPI interface operates up to 10 MHz, providing flexibility for various system architectures.
Typical applications include smartphone compasses, navigation systems, augmented reality devices, and industrial position sensing. In a smartphone, the LIS2MDLTR provides heading information for map orientation and location-based services. In industrial settings, it can detect the presence and orientation of magnetic components in automated assembly lines. The device's small footprint and low power make it ideal for wearable devices and IoT nodes.
When designing with the LIS2MDLTR, ensure proper PCB layout to minimize magnetic interference from nearby traces and components. Place the sensor away from ferrous materials and current-carrying conductors. The device supports both I2C and SPI, so select the interface that best fits the system's communication architecture. Calibration is recommended to compensate for hard-iron and soft-iron effects in the final product.
直接替换替代料： LIS2MDLTR ——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： LIS2MDLTR （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, Interface, Output Data Rate, Resolution.
快速对比工具——选择替代料号进行并排对比：
LIS3MDLTR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.85 / 个
查看数据手册 →MMC5603NJ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
QMC5883L
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LIS2MDLTR 最大额定值与电气特性
| 电源电压 | 1.71 V to 3.6 V |
| 接口 | I2C (up to 400 kHz), SPI (up to 10 MHz) |
| Magnetic Field Range | ±50 gauss |
| 分辨率 | 16-bit |
| Output Data Rate | 10 Hz to 100 Hz |
| Current Consumption (Normal Mode) | 0.6 mA |
| Current Consumption (Power-Down) | 1 µA |
| Temperature Sensor | Embedded |
| FIFO Buffer | Yes |
| Interrupt Generator | Programmable |
| Self-Test | Built-in |
| 封装 | LGA-12 (2.0 x 2.0 x 0.7 mm) |
| 工作温度 | -40°C to +85°C |
| RoHS | Compliant |
| 安装类型 | Surface Mount |
LIS2MDLTR 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 input |
| 引脚 5 | SDO/SA0 — SPI data output or I2C address select |
| 引脚 6 | CS — Chip select for SPI |
| 引脚 7 | INT — Interrupt output |
| 引脚 8 | NC — Not connected |
| 引脚 9 | NC — Not connected |
| 引脚 10 | NC — Not connected |
| 引脚 11 | NC — Not connected |
| 引脚 12 | NC — Not connected |
典型应用
LIS2MDLTR 适用于 6 应用s: Smartphone Compass, Navigation Systems, Augmented Reality, Industrial Position Sensing, Wearable Devices, IoT Nodes.
Smartphone Compass
The LIS2MDLTR provides heading information for map orientation and location-based services in smartphones. Its low power consumption and small footprint make it ideal for integration into mobile devices. The sensor detects the Earth's magnetic field to determine the device's orientation relative to magnetic north, enabling accurate compass functionality. In a typical smartphone, the LIS2MDLTR is placed near the top edge of the device, away from speakers and magnets, to minimize interference. The I2C interface connects directly to the application processor, and the interrupt pin can wake the system when a significant magnetic change is detected. The 16-bit resolution ensures smooth heading updates, while the ±50 gauss range accommodates both Earth's field and nearby magnets. Power consumption is critical in smartphones; the LIS2MDLTR's 0.6 mA normal mode and 1 µA power-down mode help extend battery life. Designers should calibrate the sensor during production to compensate for hard-iron and soft-iron effects from the device's internal components.
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Navigation Systems
The LIS2MDLTR is used in navigation systems to provide heading information for dead reckoning and turn-by-turn directions. Its high resolution and low noise enable accurate heading even in urban canyons where GPS signals are weak. The sensor is often integrated with GPS and inertial sensors to provide continuous positioning. In a navigation system, the LIS2MDLTR is mounted on the PCB with a known orientation, and its output is fused with accelerometer and gyroscope data using a sensor fusion algorithm. The I2C or SPI interface allows easy integration with the navigation processor. The wide magnetic field range of ±50 gauss ensures the sensor can operate in environments with magnetic interference, such as near vehicle motors. The embedded temperature sensor helps compensate for temperature drift, improving accuracy. Designers should place the sensor away from high-current traces and ferrous materials to minimize magnetic distortion. The low power consumption is beneficial for portable navigation devices, extending battery life during outdoor use.
推荐
Augmented Reality
The LIS2MDLTR provides orientation data for augmented reality (AR) applications, enabling virtual objects to align with the real world. Its fast response and low latency are critical for a seamless AR experience. The sensor is used in AR glasses and smartphones to track the user's head movement and position. In an AR system, the LIS2MDLTR is combined with an accelerometer and gyroscope to form a 9-axis IMU. The magnetometer provides absolute heading reference, correcting gyroscope drift over time. The I2C interface at 400 kHz allows high-speed data transfer to the AR processor. The 16-bit resolution provides fine heading granularity, essential for stable AR overlays. The small LGA-12 package fits into the compact form factor of AR glasses. Designers must calibrate the magnetometer to account for magnetic interference from the device's electronics. The low power consumption is crucial for battery-powered AR devices, ensuring extended usage time.
推荐
Industrial Position Sensing
The LIS2MDLTR is used in industrial applications to detect the presence and orientation of magnetic components, such as in automated assembly lines and robotic arms. Its wide magnetic field range of ±50 gauss allows detection of strong magnets used in industrial equipment. The sensor's robust design and wide operating temperature range (-40°C to +85°C) make it suitable for harsh industrial environments. In a typical industrial setup, the LIS2MDLTR is mounted near a magnetic target, and its output is used to determine the target's position or orientation. The SPI interface at 10 MHz enables fast data acquisition for real-time control. The programmable interrupt generator can trigger an alarm when the magnetic field exceeds a threshold, providing immediate feedback. The embedded self-test feature allows periodic verification of sensor functionality, reducing downtime. Designers should shield the sensor from external magnetic fields if necessary, and calibrate it for the specific magnetic environment. The low power consumption is beneficial for battery-powered industrial sensors.
推荐
Wearable Devices
The LIS2MDLTR is ideal for wearable devices such as fitness trackers and smartwatches, where its small size and low power consumption are critical. It provides orientation and heading information for activity tracking and gesture recognition. The sensor's 2.0x2.0mm LGA-12 package fits into the compact PCBs of wearables. In a wearable, the LIS2MDLTR is often combined with an accelerometer to detect steps and orientation. The I2C interface connects to the low-power microcontroller, and the interrupt pin can wake the system on significant magnetic changes. The 1 µA power-down mode extends battery life when the sensor is not in use. The wide magnetic field range ensures reliable operation even when the wearable is near magnets, such as in a smartwatch with a magnetic charger. Designers should place the sensor away from the battery and other magnetic components to minimize interference. The embedded temperature sensor can also be used for skin temperature monitoring.
推荐
IoT Nodes
The LIS2MDLTR is used in IoT nodes for environmental monitoring and asset tracking, where its low power consumption and small size are advantageous. It can detect the presence of magnets for door/window sensors or provide heading for GPS-assisted tracking. In an IoT node, the LIS2MDLTR is typically connected to a low-power microcontroller via I2C, and the system sleeps most of the time to conserve energy. The sensor's power-down mode (1 µA) is ideal for battery-powered nodes that wake periodically to take measurements. The programmable interrupt can wake the system when a magnetic event occurs, reducing power consumption further. The wide operating temperature range allows deployment in outdoor environments. The SPI interface can be used for faster data transfer if needed. Designers should ensure proper decoupling and PCB layout to minimize noise. The small package size enables compact IoT device designs, and the low cost makes it suitable for mass deployment.
推荐
推荐产品汇总
工程参考数据： LIS2MDLTR ——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 | LIS3MDLTR | MMC5603NJ | QMC5883L |
|---|---|---|---|---|
| Package | LGA-12 (2.0 x 2.0 x 0.7 mm) | LGA-12 (2.0 x 2.0 x 0.7 mm) - same | LGA-12 (2.0 x 2.0 x 0.7 mm) - same | LGA-12 (2.0 x 2.0 x 0.7 mm) - same |
| Brand | STMicroelectronics | STMicroelectronics | MEMSIC | QST |
| Magnetic Field Range | ±50 gauss | ±4 to ±16 gauss | ±30 gauss | ±8 gauss |
| Output Data Rate | 10 Hz to 100 Hz | 0.625 Hz to 155 Hz | 1 Hz to 100 Hz | 10 Hz to 200 Hz |
| Interface | I2C, SPI | I2C, SPI | I2C | I2C |
| Supply Voltage | 1.71V to 3.6V | 1.71V to 3.6V | 1.7V to 3.6V | 2.16V to 3.6V |
| Current Consumption (Normal) | 0.6 mA | 0.6 mA | 0.6 mA | 0.75 mA |
| Temperature Sensor | Yes | Yes | No | No |
关键差异点
- Wide magnetic field range of ±50 gauss （对比 LIS3MDLTR)
- Lower power consumption in power-down mode （对比 QMC5883L)
- Embedded temperature sensor （对比 MMC5603NJ)
设计说明
Place the LIS2MDLTR away from ferrous materials, high-current traces, and magnetic components such as speakers and inductors. Maintain a clearance of at least 5 mm from such sources to minimize magnetic interference. Use a solid ground plane beneath the sensor to reduce noise.
Decouple the VDD pin with a 100 nF ceramic capacitor placed as close as possible to the pin. For noisy power rails, add a 1 µF capacitor in parallel. Ensure the supply voltage is within the 1.71V to 3.6V range to avoid damage.
Calibrate the magnetometer in the final product to compensate for hard-iron and soft-iron effects. Perform a two-point calibration by rotating the device in all axes. Also, avoid placing the sensor near flexible PCBs that may bend and cause stress-induced magnetic changes.
合规信息
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified.
