Application of dual-axis magnetic field sensor circuit as shown. Using a two-axis magnetic sensor HMC1002, two AMP04 (A1, A2), can simultaneously measure X-axis direction and Y-axis magnetic field. HMC1002 output voltage signal, respectively, after two A1 and A2 amplification, then 12-bit A / D converter TLC2543 analog inputs and reference terminal, and through the interface circuit connected µP. MAX662A is a highly efficient DC / DC converters, +5 V power supply can be raised to +10 V, as the drive IRF7105 power. Drive input signal from µP, the output pulse current sent to the HMC1002 the S / R + side (16 feet). Figure C3 should be used in tantalum capacitors.