A transconductor and filter circuit is described. In one embodiment, a
front end module within the transconductor and filter circuit converts a
differential input voltage signal into a differential output current and
supplies the output current at a differential output. A filter module
coupled to the differential output of the front end module receives the
differential output current, converts the output current into an
intermediary differential voltage, and filters the differential voltage
to obtain a filtered differential output voltage signal having low output
impedance.