Overview
The LSM303AHTR, produced by STMicroelectronics, is an ultra-low-power, high-performance system-in-package that integrates a 3D digital linear acceleration sensor and a 3D digital magnetic sensor. This device is designed to provide precise measurements of acceleration and magnetic fields, making it suitable for a wide range of applications, including navigation, gaming, and motion detection.
Key Specifications
| Parameter | Specification |
|---|---|
| Package Style | LGA-12 (2x2 mm) |
| Mounting Method | Surface Mount |
| Operating Temperature Range | -40 °C to +85 °C |
| Analog Supply Voltage | 1.71 V to 1.98 V |
| Acceleration Full Scales | ±2g, ±4g, ±8g, ±16g |
| Acceleration Output Data Rates | 1 Hz to 6400 Hz |
| Magnetic Field Dynamic Range | ±50 gauss |
| Magnetic Field Output Data Rates | 10 Hz to 100 Hz |
| Serial Interfaces | I2C (standard, fast mode, fast mode plus, high-speed), SPI |
| FIFO Buffer | 256-level, applies to accelerometer only |
| Embedded Functions | Self-test, step detector, step counter, significant motion, tilt detection |
| Compliance | ECOPACK®, RoHS, and “Green” compliant |
Key Features
- User-selectable linear acceleration full scales of ±2g, ±4g, ±8g, and ±16g
- Capable of measuring accelerations with output data rates from 1 Hz to 6400 Hz
- Magnetic field dynamic range of ±50 gauss with output data rates from 10 Hz to 100 Hz
- I2C and SPI serial interfaces supporting various modes (standard, fast mode, fast mode plus, high-speed)
- Integrated 256-level FIFO buffer for accelerometer data
- Embedded self-test capability for sensor functionality check
- Programmable interrupt generators for free-fall, motion, and magnetic field detection
- Embedded temperature sensor and digital functions such as step detector, step counter, significant motion, and tilt detection
- ECOPACK®, RoHS, and “Green” compliant
Applications
- Tilt-compensated compasses
- Map rotation
- Position and free-fall detection
- Motion-activated functions
- 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 LSM303AHTR?
The LSM303AHTR is an ultra-low-power, high-performance system-in-package featuring a 3D digital linear acceleration sensor and a 3D digital magnetic sensor, produced by STMicroelectronics.
- What are the acceleration full scales of the LSM303AHTR?
The device has user-selectable linear acceleration full scales of ±2g, ±4g, ±8g, and ±16g.
- What are the output data rates for acceleration and magnetic field measurements?
The acceleration output data rates range from 1 Hz to 6400 Hz, and the magnetic field output data rates range from 10 Hz to 100 Hz.
- What serial interfaces does the LSM303AHTR support?
The device supports I2C (standard, fast mode, fast mode plus, high-speed) and SPI serial interfaces.
- Does the LSM303AHTR have a FIFO buffer?
Yes, it has an integrated 256-level FIFO buffer that applies only to the accelerometer.
- Can the LSM303AHTR be configured to generate interrupt signals?
Yes, the system can be configured to generate interrupt signals for free-fall, motion detection, and magnetic field detection.
- What is the operating temperature range of the LSM303AHTR?
The device operates over an extended temperature range from -40 °C to +85 °C.
- Is the LSM303AHTR compliant with environmental standards?
Yes, it is ECOPACK®, RoHS, and “Green” compliant.
- What are some of the embedded digital functions of the LSM303AHTR?
The device includes embedded digital functions such as step detector, step counter, significant motion, and tilt detection.
- What are some common applications of the LSM303AHTR?
Common applications include tilt-compensated compasses, map rotation, position and free-fall detection, motion-activated functions, and gaming and virtual reality input devices.
