FDC2214: How to reduce EMI interference of the motor，Use FDC2214 for proximity sensing detection

haichao shen

Part Number: FDC2214

Now we use FDC2214EVM for proximitysensing detection,Everything is fine when the device is still.

but I touch my hand on PC or usb cable,the date vary as I touch the Proximity Sensor. How to reduce the effct of PC or usbcable?

when I put the FDC2214EVM near to the motor,The interference waveform is very large,Data is very difficult to process.

How to reduce EMI interference of the motor

over 6 years ago

0 Bala Ravi over 6 years ago

TI__Expert 6625 points

Hi Haichao,
Does touching the cable or PC, displace the sensor in any way? To reduce the noise and EMI interference, you can try differential sensor configuration. Finally, you can use an external clock if your application requires higher precision.

Best Regards,
Bala Ravi

0 Bala Ravi over 6 years ago in reply to Bala Ravi

TI__Expert 6625 points

Hi Haichao,
Please refer to the following app note, to minimize the effect caused by touching the laptop or the USB cable: www.ti.com/.../snoa952.pdf.

Best Regards,
Bala Ravi

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FDC2214: How to reduce EMI interference of the motor，Use FDC2214 for proximity sensing detection