Electric filtering circuitry for filtering ripples of an input signal

An electric filtering circuitry for filtering ripples of an input signal, comprising:

• an input terminal for applying the input signal,
• an output terminal to provide an output signal,
• a forward path including a clocked integrator circuit and a clocked sample-and-hold or track-and-hold circuit,
• a summing node being arranged to receive the input signal and the output signal, and to provide a difference signal being a representation of a difference between the input signal and the output signal,
• wherein the clocked integrator circuit has an input side being connected to the summing node to receive the difference signal, and an output side to provide an integrator output signal,
• wherein the clocked sample-and-hold or track-and-hold circuit has an input side to only receive the integrator output signal, and an output side to provide a sample-and-hold or track-and-hold output signal, the output side of the sample-and-hold or track-and-hold circuit being coupled to the output terminal,
• wherein a feedback path is arranged between the output terminal and the summing node, and
• wherein the clocked integrator circuit is configured to perform a discrete time integration by sampling and integrating the difference signal with a clock frequency of an integrator clock signal applied to the clocked integrator circuit.