Hello Huzaifa_Tariq01,I would then recommend to split the power supply for the hall sensors and the NFC section (maybe add an additional LDO) to increase PSRR and split the grounds.As Ascha.3 highlighted, a current flowing on a common ground track ca...
Hello Huzaifa_Tariq01,If I understood your post correctly, you assume that the NFC reader is disturbing the hall sensors.Hall sensor are based on magnetic sensing. In your setup, can they be disturbed by the magnetic field sent by the ST25R device?Yo...
Hello Memer, The datasheet does not reveal the self resonance frequency (important to estimate the parallel cap to tune the matching network at 13.56MHz) and the resistance at self resonance frequency (important to calculate the damping resistor / Q-...
Hello Csxhades, every NFC antenna requires its own matching components. The matching network transforms the inductive load of the antenna ( and its antenna specific parameters: L_ant, Cp_ant, Fres,...) to the desired target matching impedance.There a...
