Abstract: An apparatus and a method for monitoring a signal are proposed. The apparatus comprises: a first detector (10) to which the signal is supplied and which, when the signal exceeds the predetermined first threshold value, emits a trigger signal, a second detector (20) to which the signal is also supplied and which, when the signal exceeds the predetermined second threshold value, emits an exceed signal, a signal generator (30) to which the output of the first detector (10) is supplied and which starts to emit a window signal of a predetermined duration as soon as the trigger signal appears at its input side, an AND gate (40) to which the output of the first detector (10) and the output of the signal generator (30) are supplied at its input side and which generates a peak-detection signal when the window signal and the exceed signal are present at its input side.

Abstract: A device and a method for converting flow of charge into a frequency signal is proposed. The device comprises: two parallel circuit branches (Z; Z′) which are arranged to receive flow of charge alternately and each of which has a series arrangement of a switching element (40; 40′), an integrator (10; 10′) and a comparator (30; 30′), wherein the switching elements (40; 40′) serve to supply the flow of charge to one of the two circuit branches (Z; Z′) and in the receiving circuit branch (Z; Z′) the integrator (10; 10′) serves to integrate the flow of charge and is configured to be resettable and the comparator (30; 30′) is configured to emit a signal when the integrated flow of charge corresponds to a specific threshold value signal.