Current-mode continuous-time fully-integrated universal filter using CDBAs

The authors propose a new, fully-integrated universal filter using a curren t differencing buffered amplifier, a recently introduced active element. It has been shown that the use of the current differencing buffered amplifier in fully-integrated filter design is attractive in that it simplifies the implementation and makes possible the use of a minimum number of grounded c apacitors, compared to those using second generation current conveyers and current feedback amplifiers.