The LDC0851 relies on two externally placed sensors (L_SENSE and L_REF) and a capacitor (C_SENSOR) for proper operation. The design and matching of the coils is very critical to ensure a proper switching occurrence. It is also important to note that the parasitic capacitance of the board (C_BOARD) and of the LCOM input pin (C_{IN_COM}) are in parallel with C_SENSOR, and the sum of all three capacitances create a total capacitance (C_TOTAL) which is considered part of the system. C_TOTAL must be greater than 33 pF to be considered in the valid design space.

Figure 7-1 Sensor Components, Board Parasitics, and Package Parasitics Diagram