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FDC2214: How to set the differential input and single ended input of FDC2214

Part Number: FDC2214

How to set the differential input and single ended input of FDC2214

  • Hi ,

    Single-ended and differential configuration instructions are available in the datasheet 10.1.1 Sensor Configuration section.

    Let me know if you have any more questions. 

  • In the differential sensor configuration in Figure 55, one conductive plate is connected to IN0A, and a second conductive plate is connected to IN0B. Together, they form a variable capacitor. When using an single-ended sensor configuration, set CHx_FIN_SEL to b10 (divide by 2).This is explained in the file, but I didn't see how to set it to differential input

  • 没明白您的问题,您可以使用中文重新表达吗

  • 就是想问一i下 FDC2214中差分输入怎么输入因为在数据手册中是这样说的In the differential sensor configuration in Figure 55, one conductive plate is connected to IN0A, and a second conductive plate is connected to IN0B. Together, they form a variable capacitor. When using an single-ended sensor configuration, set CHx_FIN_SEL to b10 (divide by 2).

  • 我还是不明白您的问题,Figure 55与数据手册描述有什么不一致吗?看您的描述好像是觉着图片与文字描述不一致?

  • 没有 我就想知道 如果用差分输入的话 ,怎么设置FDC2214还有怎么将通道值转换为电容值

  • 差分输入的话,是由上面截图 图55所示的传感器配置决定的,而不是寄存器设置,注意差分输入时,寄存器CHx_FIN_SEL 配置与单端有所不同:

    怎么将通道值转换为电容值

    通过下面公式:

  • 电感单位和频率单位计算出的电容单位是什么谢谢您

  • 电感单位是H;

    频率单位是HZ;

    电容单位是F;