Is it ok to make a 4 layer board, with two layers of coil, one layer for ground and one layer for LDC1312 and other components. I want to keep size of the board not more than the size of coil. Is this approach ok? Or do I have to make two separate 2 layer boards and connect the PCB inductor from one board to another using connectors?
Hello Naveen,
It sounds like the customer wants to do something like:
This design has many limitations and is far from optimal. The ground plane under the sensor will greatly reduce the Rp and sensitivity. These issues are most pronounced with small sensors (<15mm diameter). It is better to design a PCB where the sensor is physically offset from LDC and ground plane:
Regards,
ChrisO
