Overview
The LSM303DLM is a system-in-package developed by STMicroelectronics, featuring a 3D digital linear acceleration sensor and a 3D digital magnetic sensor. This integrated module is designed to provide precise measurements of linear acceleration and magnetic fields, making it ideal for various applications such as navigation, orientation detection, and motion sensing.
The device utilizes specialized micromachining processes for the sensing elements and CMOS technology for the IC interfaces, ensuring high accuracy and reliability. The LSM303DLM operates over an extended temperature range from -40 to +85 °C and supports both standard and fast mode I²C serial bus interfaces.
Key Specifications
| Parameter | Specification |
|---|---|
| Analog Supply Voltage | 2.16 V to 3.6 V |
| Digital Supply Voltage (IOs) | 1.8 V |
| Acceleration Full Scale | ±2 g / ±4 g / ±8 g (dynamically selectable) |
| Magnetic Field Full Scale | ±1.3 / ±1.9 / ±2.5 / ±4.0 / ±4.7 / ±5.6 / ±8.1 gauss (fully selectable) |
| I²C Interface | Standard mode (100 kHz) and fast mode (400 kHz) |
| Interrupt Generators | 2 independent programmable interrupt generators for free-fall and motion detection |
| Package Type | Plastic land grid array (LGA) |
| Operating Temperature Range | -40 to +85 °C |
Key Features
- 3 magnetic field channels and 3 acceleration channels
- Dynamically selectable sensitivities for accelerometer and magnetometer
- Power-down mode for both magnetic and accelerometer parts
- Accelerometer sleep-to-wakeup function
- 6D orientation detection
- I²C serial interface supporting standard and fast modes
- 2 independent programmable interrupt generators for free-fall and motion detection
- ECOPACK®, RoHS, and “Green” compliant
Applications
The LSM303DLM is versatile and can be used in a variety of applications, including:
- Tilt-compensated compasses: Ideal for determining headings regardless of the device's inclination.
- Navigation systems: Provides accurate acceleration and magnetic field data for navigation purposes.
- Motion sensing: Detects free-fall, motion, and orientation changes.
- Industrial automation: Used in machinery and equipment for precise motion and orientation monitoring.
- Consumer electronics: Integrated into smartphones, tablets, and other handheld devices for enhanced user experience.
Q & A
- What is the LSM303DLM?
The LSM303DLM is a system-in-package featuring a 3D digital linear acceleration sensor and a 3D digital magnetic sensor.
- What are the full-scale ranges for the accelerometer and magnetometer?
The accelerometer has full-scale ranges of ±2 g / ±4 g / ±8 g, and the magnetometer has full-scale ranges of ±1.3 / ±1.9 / ±2.5 / ±4.0 / ±4.7 / ±5.6 / ±8.1 gauss.
- What interface does the LSM303DLM use for communication?
The LSM303DLM uses an I²C serial bus interface supporting standard mode (100 kHz) and fast mode (400 kHz).
- Can the magnetic and accelerometer parts be powered down separately?
- What is the operating temperature range of the LSM303DLM?
The LSM303DLM operates over an extended temperature range from -40 to +85 °C.
- Does the LSM303DLM support interrupt generation?
- What package type is the LSM303DLM available in?
The LSM303DLM is available in a plastic land grid array (LGA) package.
- Is the LSM303DLM environmentally friendly?
- What are some common applications of the LSM303DLM?
- How does the LSM303DLM handle power management?
The device includes power-down modes and a sleep-to-wakeup function for the accelerometer to manage power efficiently.
