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 / I2C serial interfaces

 Analog supply voltage 1.71 V to 1.98 V

 Programmable interrupt generators for freefall,

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

Description

The LSM303AH is an ultra-low-power highperformance

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 firstin,

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.

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