LSM303DT
Compact 3D accelerometer and e-compass modules with LGA packaging
Manufacturer： stm
series introduction
# LSM303DT Product Series Introduction
## 1. Overview
The LSM303DT is a highly integrated and versatile product series developed by STMicroelectronics. It combines a 3 - axis accelerometer and a 3 - axis magnetometer in a single compact package, making it an ideal solution for a wide range of applications that require accurate motion and orientation sensing. This integration not only saves board space but also simplifies the design process for engineers, enabling them to quickly implement advanced sensing capabilities in their products.
## 2. Key Features
### 2.1 High - Performance Sensors
- **Accelerometer**:
- The 3 - axis accelerometer in the LSM303DT can measure acceleration with high precision. It has a wide range of selectable full - scale ranges, typically from ±2g to ±16g. This flexibility allows it to be used in various applications, from detecting gentle movements in wearable devices to measuring high - impact forces in industrial equipment.
- It offers high sensitivity, which enables the detection of even small changes in acceleration. This is crucial for applications such as tilt sensing, where accurate measurement of the device's orientation relative to the Earth's gravitational field is required.
- **Magnetometer**:
- The 3 - axis magnetometer provides accurate measurement of the magnetic field in three dimensions. It has a high resolution, allowing it to detect subtle changes in the magnetic field. This is useful for applications such as electronic compassing, where the device can determine its heading based on the Earth's magnetic field.
- The magnetometer has a low power consumption, which is beneficial for battery - powered devices, ensuring long - term operation without frequent battery replacements.
### 2.2 Digital Output
The LSM303DT provides digital output through standard communication interfaces such as I²C and SPI. This digital output simplifies the connection to microcontrollers and other digital systems, eliminating the need for additional analog - to - digital conversion circuitry. The digital interface also allows for easy configuration of the sensor's parameters, such as full - scale range, output data rate, and interrupt settings.
### 2.3 Low Power Consumption
One of the significant advantages of the LSM303DT series is its low power consumption. Both the accelerometer and magnetometer can operate in low - power modes, which significantly reduces the overall power consumption of the device. This makes it suitable for battery - powered applications such as wearable devices, remote sensors, and mobile phones, where power efficiency is a critical factor.
### 2.4 Embedded Functions
- **FIFO Buffer**: The LSM303DT is equipped with a First - In - First - Out (FIFO) buffer. This buffer can store a certain number of sensor data samples, reducing the frequency of data transfer between the sensor and the microcontroller. It is particularly useful in applications where the microcontroller has limited processing power or when there is a need to capture a sequence of sensor data without missing any samples.
- **Interrupt Function**: The device has an interrupt function that can be configured to trigger an interrupt signal when certain conditions are met, such as when the acceleration exceeds a predefined threshold or when the magnetic field changes significantly. This allows the microcontroller to respond quickly to important events without continuously polling the sensor, further reducing power consumption.
## 3. Applications
### 3.1 Consumer Electronics
- **Smartphones and Tablets**: In smartphones and tablets, the LSM303DT can be used for various functions. The accelerometer can enable features such as screen rotation based on the device's orientation, and the magnetometer can be used for electronic compassing, providing users with a sense of direction. It can also be used in gaming applications to detect the user's motion, adding a more immersive gaming experience.
- **W
Images for reference
LGA-16 Pkg
Image Preview
Image Preview