LIS3DHTR - 3-Axis Ultra-Low-Power Accelerometer | STMicroelectronics
MPN： LIS3DHTR ✓ 啟用中LIS3DHTR 概覽
An accelerometer is a sensor that measures proper acceleration, which is the rate of change of velocity per unit time. In the context of MEMS (Micro-Electro-Mechanical Systems), accelerometers are used to detect motion, tilt, vibration, and shock. The LIS3DHTR belongs to the category of digital-output accelerometers, which integrate sensing elements with signal conditioning and an analog-to-digital converter, providing digital data directly to a host microcontroller. This makes it a key component in motion-sensing systems, from consumer electronics to industrial monitoring.
Key features of the LIS3DHTR include an ultra-low-power consumption of 2 µA in low-power mode, a 32-level FIFO buffer to reduce host processor intervention, and an embedded temperature sensor. It also offers motion detection, free-fall detection, and 6D/4D orientation detection. The device supports both I2C and SPI interfaces, with a wide range of programmable interrupt outputs for event-driven applications.
Technically, the LIS3DHTR uses a capacitive sensing element with a dedicated ASIC for signal processing. It provides 16-bit data output, with a resolution of 1 mg per LSB at ±2g range. The device includes a self-test capability and is factory-calibrated. Its low power consumption and small footprint make it ideal for battery-powered portable devices.
Typical applications include mobile phones, wearable devices, gaming controllers, and IoT sensors. In these applications, the LIS3DHTR enables features such as screen rotation, step counting, gesture recognition, and fall detection. Its high resolution and low noise ensure accurate motion tracking.
When designing with the LIS3DHTR, ensure proper decoupling of the power supply with a 100 nF capacitor close to the VDD pin. The I2C address is selectable via the SA0 pin, allowing multiple devices on the same bus. For optimal performance, place the sensor away from high-frequency noise sources and follow the layout guidelines in the datasheet.
直接替換替代品，適用於 LIS3DHTR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LIS3DHTR （相同外形與佔位） — 差異在於 Package, Acceleration Range, Supply Voltage, Mounting Type, Operating Temperature.
LIS3DH
✅ 直接替換📋 參考替代品（不在目錄中）
LIS3DSHTR
⚡ 相同封裝📋 參考替代品（不在目錄中）
LIS331DLHTR
⚡ 相同封裝📋 參考替代品（不在目錄中）
MMA8452Q
⚡ 相同封裝 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LIS3DHTR 最大額定值與電氣特性
| Axis | X, Y, Z |
| Full Scale Range | ±2g, ±4g, ±8g, ±16g |
| Output Data Rate | 0.5 Hz to 625 Hz |
| 介面 | I2C, SPI |
| 供應電壓 | 1.71 V to 3.6 V |
| Current Consumption (Low-Power Mode) | 2 µA |
| Current Consumption (Normal Mode) | 11 µA (at 25 Hz ODR) |
| 解析度 | 16-bit |
| Sensitivity | 1 mg/LSB at ±2g |
| 工作溫度 | -40°C to +85°C |
| 封裝 | 16-LGA (3x3 mm) |
| 安裝類型 | Surface Mount |
| FIFO Buffer | 32-level |
| Embedded Features | Motion detection, free-fall, 6D/4D orientation |
| RoHS 狀態 | Compliant |
LIS3DHTR 腳位配置
| 腳位 1 | VDD — Power supply |
| 腳位 2 | GND — Ground |
| 腳位 3 | SCL/SPC — I2C clock / SPI clock |
| 腳位 4 | SDA/SDI/SDO — I2C data / SPI data in / SPI data out |
| 腳位 5 | SA0 — I2C address select |
| 腳位 6 | CS — Chip select (SPI) |
| 腳位 7 | INT1 — Interrupt 1 |
| 腳位 8 | INT2 — Interrupt 2 |
| 腳位 9 | NC — Not connected |
| 腳位 10 | NC — Not connected |
| 腳位 11 | NC — Not connected |
| 腳位 12 | NC — Not connected |
| 腳位 13 | NC — Not connected |
| 腳位 14 | NC — Not connected |
| 腳位 15 | NC — Not connected |
| 腳位 16 | NC — Not connected |
典型應用
LIS3DHTR 適用於 6 應用s: Wearable Devices, IoT Motion Sensing, Mobile Phones, Gaming Controllers, Industrial Vibration Monitoring, Healthcare Monitoring.
Wearable Devices
The LIS3DHTR is ideal for wearables like fitness trackers and smartwatches due to its ultra-low power consumption of 2 µA in low-power mode, which extends battery life. Its small 3x3 mm LGA package fits compact designs. It supports step counting, motion detection, and tilt sensing, enabling features like activity tracking and gesture recognition. The 32-level FIFO reduces host processor wake-ups, further saving power. According to STMicroelectronics, it is designed for battery-powered applications.
推薦
IoT Motion Sensing
In IoT applications, the LIS3DHTR provides accurate motion sensing for asset tracking, smart home devices, and industrial monitoring. Its wide full-scale range (±2g to ±16g) allows detection of both subtle movements and strong shocks. The I2C/SPI interface simplifies integration with microcontrollers. The low power consumption enables battery-powered IoT nodes to operate for years. The embedded motion and free-fall detection can trigger alerts without waking the host processor, making it efficient for event-driven systems.
推薦
Mobile Phones
The LIS3DHTR is used in mobile phones for screen rotation, gesture recognition, and step counting. Its high resolution (16-bit) and low noise ensure accurate motion detection. The device supports 6D/4D orientation detection, enabling automatic screen orientation. The low power consumption is crucial for battery life. The small package allows integration into slim phone designs. The I2C interface allows easy connection to the application processor.
推薦
Gaming Controllers
The LIS3DHTR enhances gaming controllers with motion-based controls, such as tilt steering and gesture commands. Its fast output data rate (up to 625 Hz) ensures responsive motion tracking. The device's low latency and high sensitivity provide a smooth gaming experience. The 32-level FIFO helps manage data bursts. The small package fits inside compact controller designs. The interrupt outputs can be used to wake the controller from sleep on motion detection.
推薦
Industrial Vibration Monitoring
The LIS3DHTR is suitable for industrial vibration monitoring, where it can detect abnormal vibrations in machinery. Its wide full-scale range (±16g) allows measurement of high-amplitude vibrations. The device operates over a wide temperature range (-40°C to +85°C), making it suitable for harsh environments. The SPI interface enables high-speed data transfer for real-time monitoring. The embedded free-fall detection can be used for shock detection.
推薦
Healthcare Monitoring
In healthcare, the LIS3DHTR is used in patient monitoring devices to detect falls and track physical activity. Its low power consumption is critical for wearable health monitors that need long battery life. The device's high sensitivity and low noise enable accurate motion analysis. The 6D orientation detection can be used to detect patient position. The I2C interface allows easy integration with medical-grade microcontrollers.
推薦
推薦產品摘要
工程參考資料，適用於 LIS3DHTR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LIS3DH | LIS3DSHTR | LIS331DLHTR | ADXL345 | MMA8452Q |
|---|---|---|---|---|---|---|
| Package | 16-LGA (3x3 mm) | 16-LGA (3x3 mm) | 16-LGA (3x3 mm) | 16-LGA (3x3 mm) | 14-LGA (3x3 mm) | 16-LGA (3x3 mm) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | Analog Devices | NXP Semiconductors |
| Full Scale Range | ±2g, ±4g, ±8g, ±16g | ±2g, ±4g, ±8g, ±16g | ±2g, ±4g, ±8g, ±16g | ±2g, ±4g, ±8g | ±2g, ±4g, ±8g, ±16g | ±2g, ±4g, ±8g |
| Output Data Rate | 0.5 Hz to 625 Hz | 0.5 Hz to 625 Hz | 0.5 Hz to 1600 Hz | 0.5 Hz to 1000 Hz | 0.1 Hz to 3200 Hz | 1.56 Hz to 800 Hz |
| Supply Voltage | 1.71V to 3.6V | 1.71V to 3.6V | 1.71V to 3.6V | 2.16V to 3.6V | 2.0V to 3.6V | 1.95V to 3.6V |
| Current Consumption (Low-Power) | 2 µA | 2 µA | 2 µA | 10 µA | 23 µA | 6 µA |
| FIFO Buffer | 32-level | 32-level | 32-level | 32-level | 32-level | 32-level |
| Interface | I2C, SPI | I2C, SPI | I2C, SPI | I2C, SPI | I2C, SPI | I2C |
主要差異化特點
- Ultra-low power consumption of 2 µA in low-power mode (對比ADXL345)
- Wide full-scale range up to ±16g (對比MMA8452Q)
- Small 3x3 mm LGA package (對比ADXL345)
設計說明
Place a 100 nF decoupling capacitor close to the VDD pin to filter power supply noise. Use a 1 µF capacitor for additional filtering if needed. Ensure the ground plane is solid and the sensor is placed away from high-frequency digital lines to minimize noise coupling. Follow the layout guidelines in the STMicroelectronics LIS3DH datasheet for optimal performance.
The LIS3DHTR operates from 1.71V to 3.6V. For battery-powered applications, use the low-power mode to reduce current consumption to 2 µA. The device automatically enters low-power mode when the output data rate is set to 1 Hz or lower. Ensure the power supply is stable and within the specified range to avoid erratic behavior.
When using the I2C interface, ensure the SA0 pin is set correctly to select the desired I2C address. The default address is 0x18 when SA0 is low, and 0x19 when SA0 is high. For SPI, ensure the CS pin is properly controlled. Also, note that the LIS3DHTR has a self-test feature that can be used to verify proper operation during production testing.
合規資訊
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified. Lead-free per datasheet.
