A band pass filtering circuit based on a quadripole includes a serial branch having a first acoustic resonator presenting a frequency of resonance and a frequency of anti-resonance and mounted in serial with a first capacitor; a parallel branch having a second acoustic resonator resulting from the same manufacturing process as the first resonator and mounted in parallel with a second capacitor of identical value to that the first capacitor. The filtering circuit is particularly but not exclusively adapted to the realization of integrated filtering circuits used in mobile telephony.