ApplicationNote采用LDC的电感式检测应用的传感器设计摘要若要从LDC获得出色性能，需要适合测量的传感器。本应用手册涵盖了为特定应用设计传感器时需要考虑的参数。具体的关注领域包括基于PCB的传感器的物理布线特性、传感器电容器的注意事项以及最大限度地减小或补偿寄生效应的技术。内容1传感器.......................................................................................................................................................................................21.1传感器频率.........................................................................................................................................................................21.2RS和RP............................................................................................................................................................................32电感器特性................................................................................................................................................................................42.1电感器形状.........................................................................................................................................................................42.2匝数....................................................................................................................................................................................52.3多层....................................................................................................................................................................................72.4电感器尺寸........................................................................................................................................................................112.5自谐振频率.......................................................................................................................................................................133电容器特性..............................................................................................................................................................................173.1电容器RS、Q和SRF......................................................................................................................................................173.2寄生电容的影响................................................................................................................................................................173.3电容器放置.......................................................................................................................................................................174物理线圈设计..........................................................................................................................................................................184.1使用WEBENCH的示例设计过程.....................................................................................................................................184.2PCB布局建议...................................................................................................................................................................215总结..................................................................................................................................................
