Ultra-compact high-performance e-compass 3D accelerometer and 3D magnetometer module

The LSM303AH is an ultra-low-power high-performance system-in-package featuring a 3D digital linear acceleration sensor and a 3D digital magnetic sensor.

The LSM303AH has user-selectable linear acceleration full scales of ±2g/±4g/±8g/±16 g and is capable of measuring accelerations with output data rates from 1 Hz to 6400 Hz. The device has a magnetic field dynamic range of ±50 gauss with output data rates from10 Hz to 100 Hz. The LSM303AH 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 LSM303AH has an integrated 256-level first-in, first-out (FIFO) buffer allowing the user to store data in order to limit intervention by the host processor. The FIFO buffer applies only to the accelerometer.

The embedded self-test capability allows the user to check the functioning of the sensor in the final application.

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 LSM303AH 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.

Key Features

  • 3 magnetic field channels and 3 acceleration channels
  • ±50 gauss magnetic dynamic range
  • ±2/±4/±8/±16 g selectable acceleration full scales
  • Anti-aliasing filter
  • 16-bit data output
  • SPI / I2 C serial interfaces
  • Analog supply voltage 1.71 V to 1.98 V
  • Programmable interrupt generators for free-fall, motion and magnetic field detection
  • Embedded self-test
  • Embedded 256-level FIFO
  • Embedded temperature sensor
  • Embedded digital functions: step detector, step counter, significant motion and tilt
  • ECOPACK® , RoHS and “Green” compliant

Resources

Technical Documentation

Product Specifications
Description Version Size
DS11000 DS11000: Ultra-compact high-performance eCompass module: ultra-low-power 3D accelerometer and 3D magnetometer 6.0 1 MB
Technical Notes & Articles
Description Version Size
TN0018 TN0018: Surface mounting guidelines for MEMS sensors in an LGA package 6.0 214 KB
Design Notes & Tips
Description Version Size
DT0058 DT0058: Computing tilt measurement and tilt-compensated e-compass 1.0 220 KB
DT0059 DT0059: Ellipsoid or sphere fitting for sensor calibration 2.0 409 KB
DT0060 DT0060: Exploiting the gyroscope to update tilt measure and e-compass 1.0 226 KB

Publications and Collaterals

Brochures
Description Version Size
MEMS and Sensors, Smart solutions for IoT and enhanced user experience 1 MB

Tools and Software

Embedded Software
MEMS and Sensors Software
Support & Community

Sample & Buy

Part Number Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
LSM303AH LGA 2X2X1 12LD PITCH 0.5MM Tray Preview - - NEC EAR99 - MORE INFO
LSM303AHTR LGA 2X2X1 12LD PITCH 0.5MM Tape And Reel Active 1.635 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LSM303AH PreviewLGA 2X2X1 12LD PITCH 0.5MMIndustrialEcopack2 0 0
LSM303AHTR ActiveLGA 2X2X1 12LD PITCH 0.5MMIndustrialEcopack2 0 0
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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