ST LIS302DLH MEMS数字输出运动传感方案
ST公司的LIS302DLH是MEMS数字输出运动传感器,具有超低功耗高性能三轴线性加速度计特性,用户可动态选择满刻度±2g/±4g/±8g,输出数据速率从0.5Hz到1kHz. LIS302DLH的工作电压从2.16V到3.6V,功耗低到10uA,厚度只有0.8mm,10000g抗震特性,可用于自由下落检测,手持设备智能降功耗,计步器,显示取向,游戏机,碰撞识别和振动监测和补偿等.本文介绍了LIS302DLH主要特性,方框图和电连接图.
LIS302DLH: MEMS digital output motion sensor ultra low-power high performance 3-axes “piccolo” accelerometer The LIS302DLH is an ultra low-power high performance three axes linear accelerometer belonging to the “piccolo” family, with digital I2C/SPI serial interface standard output. The device features ultra low-power operational modes that allow advanced power saving and smart sleep to wake-up functions.
The LIS302DLH has dynamically user selectable full scales of ±2g/±4g/±8g and it is capable of measuring accelerations with output data rates from 0.5 Hz to 1 kHz. The self-test capability allows the user to check the functioning of the sensor in the final application.
The device may be configured to generate interrupt signal by inertial wake-up/free-fall events as well as by the position of the device itself.
Thresholds and timing of interrupt generators are programmable by the end user on the fly. The LIS302DLH is available in small thin plastic land grid array package (LGA) and it is guaranteed to operate over an extended temperature range from -40℃to +85℃.
LIS302DLH主要特性:
■ Wide supply voltage, 2.16 V to 3.6 V
■ Low voltage compatible IOs, 1.8 V
■ Ultra thickness 0.8 mm
■ Ultra low-power mode consumption down to 10 μA
■±2g/±4g/±8g dynamically selectable full-scale
■ I2C/SPI digital output interface
■ 16 bit data output
■ 2 independent programmable interrupt generators for free-fall and motion detection
■ Sleep to wake-up function
■ 6D orientation detection
■ Embedded self-test
■ 10000 g high shock survivability
■ ECOPACK® RoHS and “Green” compliant
LIS302DLH 应用:
■ Motion activated functions
■ Free-fall detection
■ Intelligent power saving for handheld devices
■ Pedometer
■ Display orientation
■ Gaming and virtual reality input devices
■ Impact recognition and logging
■ Vibration monitoring and compensation
图1.LIS302DLH方框图
图2.LIS302DLH电连接图