ST 公司的LIS352AX是新型小尺寸低功耗三軸線性加速度計,包括有傳感元件和IC接口電路,能向外部提供模擬信號. LIS352AX滿刻度量程為±2g,測量帶寬2.0 kHz,對溫度有非常高的穩定性,嵌入了自測試,是用戶能檢測系統功能,可以用在數據保護中的自由跌落檢測,移動和電池操作終端,游戲和虛擬真實輸入設備以及防盜系統和慣性導航.本文介紹了LIS352AX的主要特性,方框圖,電連接圖以及濾波器負載電容選擇表.
LIS352AX: MEMS inertial sensor 3-axis - ±2g absolute analog output accelerometer
The LIS352AX is the new small size, low-power three-axis linear accelerometer that includes a sensing element and an IC interface able to provide an absolute analog signal to the external world. The IC interface is manufactured using a CMOS process that allows high level of integration to design a dedicated circuit which is trimmed to better match the sensing element characteristics.
The LIS352AX has a full scale of ±2g and it is capable of measuring accelerations over amaximum bandwidth of 2.0 kHz. The device bandwidth may be reduced by using external capacitances. The self-test capability allows the user to check the functioning of the system.
An embedded multiplexer allows to redirect the analog outputs onto a single pin for operation with a single channel A/D converter.
ST is already in the field with several hundreds million sensors with excellent acceptance from the market in terms of quality, reliability and performance.
The LIS352AX is provided in plastic land grid array (LGA) package. Several years ago ST pioneered successfully the usage of this package for accelerometers. Today ST has the widest manufacturing capability and strongest expertise in the world for production of sensor in plastic LGA package.
LIS352AX 主要特性:
Absolute 0-g level and sensitivity
Very high stability over temperature
3 acceleration channels plus multiplexed analog output
Factory trimmed device sensitivity and 0-g level
Power-down mode
Embedded self test
10000g high shock survivability
ECOPACK RoHS and “Green” compliant
LIS352AX 應用:
Free-fall detection for data protection
Mobile and battery operated terminals
Gaming and virtual reality input devices
Antitheft systems and inertial navigation
圖1.LIS352AX方框圖
圖2.LIS352AX電連接圖
表1.濾波器電容Cload (x,y,z) 選擇表 |
