A method of interfacing a LC sensor with a control unit is described. Specifically, the control unit comprises a first and a second (204) contact, wherein the LC sensor is connected between the first and the second contact, and wherein a capacitor is connected between the first contact (202) and a ground (GND). In particular, in order to start the oscillation of the LC sensor, the method comprising the steps of: - during a first phase, connecting the first contact (202) to a supply voltage (VDD) and placing the second contact in a high impedance state, such that the capacitor (C1) is charged through the supply voltage (VDD); - during a second phase, placing the first contact in a high impedance state and connecting the second contact to the ground (GND), such that the capacitor (C1) transfers charge towards the LC sensor; and - during a third phase, placing the first contact and the second contact in a high impedance state, such that the LC sensor is able to oscillate.