LSM303AH屬于傳感器變送器的運(yùn)動(dòng)傳感器-IMU（慣性測(cè)量裝置、單元）。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的LSM303AH運(yùn)動(dòng)傳感器 - IMU（慣性測(cè)量裝置、單元）運(yùn)動(dòng)傳感器 - IMU（慣性測(cè)量裝置）是一種利用加速計(jì)、陀螺儀和磁力儀測(cè)量速度、方向和磁力以獲取方向、正確加速度和位置的器件。其他類型的傳感器包括溫度傳感器、傾角儀和氣壓計(jì)。

特性 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

描述 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