ZHCSKH7 November 2019 LDC1001
PRODUCTION DATA.
In this example, consider a PCB sensor with the characteristics listed in Table 23:
| PARAMETER | VALUE |
|---|---|
| Thickness of PCB copper | 1 oz (35 µm) |
| Coil shape | Circular |
| Number of turns | 23 |
| Trace thickness | 4 mil (0.102 mm) |
| Trace spacing | 4 mil (0.102 mm) |
| PCB core material | FR4 |
| RP at 1-mm target-sensor distance | 5 kΩ |
| RP at 7-mm target-sensor distance | 12.5 kΩ |
| Nominal sensor Inductance | 18 µH |
The target is a stainless steel disk of 15-mm diameter and has a thickness of 1 mm.