Product Overview

LIS2DW12TR is a cost-effective 3-axis MEMS linear accelerometer from STMicroelectronics’ "femto" family, designed for scenarios with strict requirements on power consumption, accuracy, and integration. It adopts an LGA-12 package (2.0×2.0×0.7mm) , supports Tape and reel packaging for mass mounting, and operates over a temperature range of -40~+85℃, making it suitable for industrial, consumer, and medical applications.

The LIS2DW12TR offers configurable full scales of ±2g/±4g/±8g/±16g, an output data rate (ODR) of 1.6~1600Hz, and a maximum resolution of 14 bits. It integrates a 32-level FIFO buffer, an embedded temperature sensor, and an intelligent motion detection engine (single/double-tap, free-fall, 6D/4D orientation), significantly reducing host MCU intervention. Its core advantage lies in ultra-low power consumption — only 50nA in power-down mode and 0.38μA in low-power mode (ODR=1.6Hz) — while maintaining a low noise level of 1.3mg RMS (low-power mode 4), balancing battery life and measurement accuracy. It is an ideal choice for low-power scenarios such as wearables and wireless sensor nodes.

Key Features

• Industry-Leading Ultra-Low Power Consumption：Typical current of 50nA in power-down mode , 0.38μA in low-power mode (ODR=1.6Hz), and 1μA in low-power mode (ODR=12.5Hz), which is 30% lower than similar products. It greatly extends the battery life of portable devices, especially suitable for long-term standby applications.
• High Precision & Low Noise Performance：Noise as low as 1.3mg RMS in low-power mode 4 (FS=±2g, ODR=200Hz) and 90μg/√Hz in high-performance mode; factory-calibrated zero-g offset of ±20mg and temperature drift of ±0.2mg/℃ ensure long-term measurement stability, meeting the needs of high-precision scenarios like medical monitoring.
• Flexible Full Scale & Multiple Operating Modes：Supports four configurable full scales (±2g/±4g/±8g/±16g) and ODR from 1.6Hz to 1600Hz; provides 1 high-performance mode (14-bit) and 4 low-power modes (12/14-bit resolution). The "single data conversion on demand mode" dynamically balances performance and power consumption based on application scenarios.
• Integrated Intelligent Motion Detection：Built-in motion detection functions including single/double-tap (configurable axis priority and threshold), free-fall (threshold 5~16LSB@±2g), 6D/4D orientation (portrait/landscape/face-up/face-down), and activity/inactivity detection. Interrupts can be directly output via INT1/INT2 pins, eliminating the need for additional software algorithms.
• High Reliability & Environmental Compliance：Withstands 10000g shock (0.2ms, unpowered) and 3000g shock (0.5ms, powered), adapting to harsh industrial and security environments; complies with ECOPACK® , RoHS, and "Green" standards, free of lead and halogens, meeting global environmental regulations.

Technical Specifications

Typical Applications

• Wearable Devices (Smart Watches/Fitness Trackers)：The ultra-low power consumption (0.38μA@1.6Hz) of the LIS2DW12TR extends the battery life of smart trackers to over 7 days; the 1.3mg low noise ensures accurate step counting and sleep monitoring. The integrated double-tap detection enables screen wake-up, and 6D orientation supports watch face rotation, eliminating the need for additional sensors and simplifying PCB design.
• Consumer Electronics (Tablets/Laptops)：In tablets, its 6D orientation function quickly responds to screen rotation (rotation delay <100ms); the free-fall detection triggers hard drive protection when the device is dropped, and the 10000g shock resistance reduces drop damage risks. The low-power feature adapts to laptop standby scenarios, reducing sleep power consumption.
• Portable Medical Devices (Heart Rate Monitors/Blood Glucose Analyzers)：14-bit high resolution and ±20mg zero-g offset ensure high-precision acquisition of physiological signals (e.g., filtering body movement interference); low noise (1.3mg RMS) avoids data distortion. The wide temperature range (-40~+85℃) adapts to temperature fluctuations after medical device sterilization, and RoHS compliance meets medical environmental requirements.
• Industrial IoT (Wireless Sensor Nodes)：Low-power mode (1μA@12.5Hz) + 32-level FIFO reduces the communication frequency between sensor nodes and gateways, lowering the power consumption of wireless modules. It supports both I²C and SPI interfaces, enabling flexible adaptation to different MCUs. The 10000g shock resistance adapts to vibration and collision in industrial sites, ensuring long-term stable operation.
• Security Devices (Smart Door Locks/Alarm Systems)：The free-fall detection triggers an alarm when the alarm is violently disassembled (response time <50ms); activity/inactivity detection distinguishes "normal use" from "unauthorized movement". The wide temperature range adapts to extreme temperatures ( -40℃ cold/85℃ heat) for outdoor door locks, eliminating the need for additional temperature compensation circuits.

Why Choose LIS2DW12TR ?

• Significant Power Advantage, Industry-Leading Battery Life：Compared with similar accelerometers (e.g., ADXL345), the LIS2DW12TR reduces power-down current (50nA) by 60% and low-power mode current (0.38μA) by 50%, extending the battery life of battery-powered devices by 30%~50%, especially suitable for portable scenarios without external power.
• Balanced Accuracy & Power Consumption, Adaptable to Multi-Precision Needs：14-bit high resolution + 1.3mg low noise meet high-precision scenarios in medical and industrial fields, while 12-bit low-power mode adapts to low-cost consumer electronics. Factory-calibrated zero-g offset (±20mg) eliminates the need for user re-calibration, shortening development cycles.
• High Integration, Reducing System Costs：Built-in motion detection engines (single/double-tap, free-fall) eliminate the need for the MCU to run complex algorithms, reducing software development effort. The integrated temperature sensor and FIFO eliminate external temperature chips and cache chips, reducing PCB area by 20% and BOM cost by 15%.
• FIFO Buffer Reduces MCU Burden, Optimizing System Power：The 32-level FIFO stores multiple sets of 3-axis data, allowing the MCU to enter deep sleep mode (current <1μA) instead of polling the sensor in real time. It reads data in batches when the FIFO is full, reducing overall system power consumption by over 25%, especially suitable for wireless sensor nodes.
• High Reliability & Compliance, Adapting to Global Markets：10000g shock resistance and wide temperature design cope with harsh industrial and security environments; ECOPACK® and RoHS compliance meet environmental regulations in the EU and China, eliminating the need for design modifications for different regions. Tape and reel packaging supports high-speed SMT mounting, improving mass production efficiency by 40%.

SUNTOP COMPANY INTRODUCTION

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