SENSING ARRANGEMENT WITH INTERFERENCE DETECTION FUNCTIONALITY
FIG5 is a circuit diagram of a processing circuit for a sensing arrangement according to the first embodiment
FIG5 is a circuit diagram of a processing circuit 3 for a sensing arrangement according to the first embodiment. The signal generator 4 has the same topology as the third sub-processing unit 53, the amplifying circuit, illustrated in FIG5. In other words, the signal generator comprises a sub-processing unit corresponding to the third sub-processing unit 53 (a "corresponding sub-processing unit"), having a same topology. An output of the signal generator 4 is the second signal S2.
circuit diagram
51
first sub-processing unit filtering circuit
52
signal selection circuit
53
third sub-processing unit
58
additional filter
59
further comprises ground units
55
first operational amplifier
['6. The sensing arrangement of claim 5, wherein: the sub-processing unit (53) comprises a first operational amplifier (55) adapted to output an amplified sensing signal (S P ), with at least one capacitor (C 1 , C 2 ) that modifies the amplified sensing signal (S P ) in response to the second excitation; and the corresponding sub-processing unit (4) comprises a second operational amplifier (65) with at least one capacitor (C 3 , C 4 ) that modifies an output of the second operational amplifier (S 2 ) in response to the second excitation, said modified output of the second operational amplifier forming the second signal.', '9. The sensing arrangement of any of claims 4 to 8, wherein the sub-processing unit (51) comprises a filtering circuit, and the corresponding sub-processing unit comprises a corresponding filtering circuit.']