ST LSM320HAY30 3D數字線性加速度傳感方案

ST 公司的LSM320HAY30是低功耗系統級封裝的 3D數字線性加速度傳感器,用戶動態可選擇的滿量程為±2g/±4 g/±8g,角速率±300 dps,輸出數據速率從0.5Hz 到高達1 kHz.工作電壓2.7V到3.6V, I2C/SPI接口,6D取向選擇,主要用在智能用戶接口的運動控制,顯示器取向,工業控制和機器人,游戲機,以及自由跌落檢測.本文介紹LSM320HAY30主要特性,方框圖以及電連接框圖和外接元件數值表.

The LSM320HAY30 is a low-power system-in-package featuring a 3D digital linear acceleration sensor and a 2D analog angular rate pitch and yaw sensor. It provides excellent temperature stability and high resolution over an extended operating temperature range (-40℃to +85℃).

ST’s family of sensor modules leverages the robust and mature manufacturing process already used for the production of micromachined accelerometers. The LSM320HAY30 has a dynamically user-selectable full-scale acceleration range of ±2 g/±4 g/±8 g, and an angular rate of ±300 dps capable of detecting rates with a -3 dB bandwidth up to 140 Hz along pitch and yaw axes. The LSM320HAY30 is capable of measuring linear accelerations with output data rates from 0.5 Hz up to 1 kHz. The embedded self-test capability allows the user to check the functioning of each sensor in the final application. The device can be configured to generate an interrupt signal by inertial wakeup/free-fall events as well as by the position of the device itself. Several years ago ST successfully pioneered the use of this package for accelerometers. Today, ST has the widest manufacturing capability and strongest expertise in the world for production of sensors in plastic LGA packages.

LSM320HAY30主要特性:

■ 2.7 V to 3.6 V power supply operation

■ Low voltage compatible digital IOs, 1.8 V

■ ±2 g/±4 g/±8 g dynamically selectable full-scale

■ ±300 dps absolute analog angular rate output

■ I2C/SPI digital linear acceleration interface (16 bit data output)

■ Two separated outputs for pitch and yaw axis (1x and 4x amplified)

■ Integrated low-pass filters for angular rate

■ 2 independent programmable interrupt generators for free-fall and motion detection

■ Sleep-to-wakeup function

■ 6D orientation detection

■ Extended operating temperature range (40℃ to +85℃)

■ High stability over temperature

■ High shock survivability

■ Embedded self-test

■ Embedded power-down

■ Embedded low-power mode

■ ECOPACK? RoHS and “Green” compliant

LSM320HAY30應用:

■ Motion control for smart user interface

■ Display orientation

■ Gaming and virtual reality input devices

■ Industrial and robotics

■ Vibration monitoring and compensation

■ Impact recognition and logging

■ Motion-activated functions

■ Intelligent power-saving for handheld devices

■ Free-fall detection


圖1.LSM320HAY30方框圖

圖2.LSM320HAY30電連接框圖

LSM320HAY30外接元件數值表:


The device core is supplied through the Vdd line. Power supply decoupling capacitors
(C1=100 nF ceramic, C2=10 μF aluminum) should be placed as near as possible to the
supply pin of the device (common design practice).