Be applied to full difference signal conditioning circuit of electric current excitation sensor

The utility model relates to a sensor detection area, especially a be applied to full difference signal conditioning circuit of electric current excitation sensor, including signal receiving unit, gain unit able to programme, anti -aliasing filter unit and the AD conversion unit who connects gradually, signal receiving unit is used for receiving the output signal of sensor and keep apart dc component after export, gain unit able to programme, be used for with the alternating current signal of signal receiving unit output, through enlarged or reduce after with difference signal output, the anti -aliasing filter unit for with difference signal output behind the filtering high frequency interference signal, AD conversion unit for the difference signal conversion who receives exports for data signal. The utility model discloses whole signal flow is whole to adopt full differential mode, on the signal transmission route any some receive noise and can all obtain effectual suppression, can increase the noise immunit