Overview
The LSM303DTR, produced by STMicroelectronics, is a system-in-package that integrates a 3D digital linear acceleration sensor and a 3D digital magnetic sensor. This ultra-compact module is designed to provide high-performance sensing capabilities, making it suitable for a wide range of applications. The device features linear acceleration full scales of ±2g, ±4g, ±6g, ±8g, and ±16g, and magnetic field full scales of ±2, ±4, ±8, and ±12 gauss. It includes both SPI and I²C serial interfaces, supporting standard and fast modes, and operates over an extended temperature range from -40 °C to +85 °C.
Key Specifications
| Parameter | Value |
|---|---|
| Linear Acceleration Full Scales | ±2g, ±4g, ±6g, ±8g, ±16g |
| Magnetic Field Full Scales | ±2, ±4, ±8, ±12 gauss |
| Data Output | 16-bit |
| Serial Interfaces | SPI, I²C (standard and fast mode: 100 kHz, 400 kHz) |
| Analog Supply Voltage | 2.16 V to 3.6 V |
| Package | LGA-16 (3x3x1 mm) |
| Temperature Range | -40 °C to +85 °C |
| Power Modes | Power-down mode, Low-power mode |
Key Features
- 3 magnetic field channels and 3 acceleration channels
- Programmable interrupt generators for free-fall, motion detection, and magnetic field detection
- Embedded temperature sensor and FIFO
- ECOPACK®, RoHS, and “Green” compliant
- Separate enable and power-down modes for magnetic and accelerometer blocks
Applications
- Tilt-compensated compasses
- Map rotation
- Position detection
- Motion-activated functions
- Free-fall detection
- Click/double-click recognition
- Pedometers
- Intelligent power saving for handheld devices
- Display orientation
- Gaming and virtual reality input devices
- Impact recognition and logging
- Vibration monitoring and compensation
Q & A
- What is the LSM303DTR? The LSM303DTR is a system-in-package featuring a 3D digital linear acceleration sensor and a 3D digital magnetic sensor.
- What are the linear acceleration full scales of the LSM303DTR? The linear acceleration full scales are ±2g, ±4g, ±6g, ±8g, and ±16g.
- What are the magnetic field full scales of the LSM303DTR? The magnetic field full scales are ±2, ±4, ±8, and ±12 gauss.
- What serial interfaces does the LSM303DTR support? The LSM303DTR supports SPI and I²C serial interfaces.
- What is the operating temperature range of the LSM303DTR? The operating temperature range is from -40 °C to +85 °C.
- Does the LSM303DTR have power-saving features? Yes, it has power-down mode and low-power mode.
- Can the magnetic and accelerometer blocks be controlled separately? Yes, they can be enabled or put into power-down mode separately.
- What kind of interrupts can be generated by the LSM303DTR? The device can generate interrupts for free-fall, motion detection, and magnetic field detection.
- Is the LSM303DTR environmentally friendly? Yes, it is ECOPACK®, RoHS, and “Green” compliant.
- What are some common applications of the LSM303DTR? Common applications include tilt-compensated compasses, map rotation, position detection, and gaming input devices.
