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1. Description
The LSM303AGRTR is an ultra-low-power highperformance system-in-package featuring a 3D digital linear acceleration sensor and a 3D digital magnetic sensor. The LSM303AGR has linear acceleration full scales of ±2g/±4g/±8g/±16g and a magnetic field dynamic range of ±50 gauss. The LSM303AGR includes an I2C serial bus interface that supports standard, fast mode, fast mode plus, and high-speed (100 kHz, 400 kHz, 1 MHz, and 3.4 MHz) and an SPI serial standard interface. The system can be configured to generate an interrupt signal for free-fall, motion detection and magnetic field detection. The magnetic and accelerometer blocks can be enabled or put into power-down mode separately. The LSM303AGR is available in a plastic land grid array package (LGA) and is guaranteed to operate over an extended temperature range from -40 °C to +85 °C.
2. Features
1. 3 magnetic field channels and 3 acceleration channels
2. ±50 gauss magnetic dynamic range
3. ±2/±4/±8/±16 g selectable acceleration full scales
4. 16-bit data output
5. SPI / I2C serial interfaces
6. Analog supply voltage 1.71 V to 3.6 V
7. Selectable power mode/resolution for accelerometer and magnetometer
8. Single measurement mode for magnetometer
9. Programmable interrupt generators for freefall, motion detection and magnetic field detection
10. Embedded self-test
11. Embedded temperature sensor
12. Embedded FIFO
13. ECOPACK®, RoHS and“Green”compliant
3. Pin configuration
4. Applications
1. Tilt-compensated compasses
2. Map rotation
3. Position detection
4. Motion-activated functions
5. Free-fall detection
6. Click/double-click recognition
7. Pedometers
8. Intelligent power saving for handheld devices
9. Display orientation
10. Gaming and virtual reality input devices
11. Impact recognition and logging
12. Vibration monitoring and compensation
5. Pin description
6. Magnetometer power mode
The LSM303AGRTR magnetometer provides two different power modes: high resolution and Low power consumption mode. The following table summarizes the magnetometer RMS noise value and current Consumption under different product configurations. When the low-pass filter is enabled, the bandwidth is reduced and the noise performance is reduced Improved without increasing power consumption.
