A practical implementation scheme for component simulation SI filters

This paper presents a very practical method to implement the new switched-current structures recently proposed by the authors. Those structures are obtained by a one-to-one simulation of the components of a continuous-time Transconductance-C model. The resulting circuits operate with doubled sampling rate (sampling the input and updating the output at each phase), do not present switching glitches, use the minimum possible number of switches and naturally admit two-phases nonoverlapping clocks. Two versions are presented, with “direct” or “modulated” signals, The “modulated” version presents low sensitivity and first-order cancellation of clock feedthrough effects