Inverting integrator and active filter applications of composite operational amplifiers

A new approach for extending the useful operating frequency range of linear active networks realized using operational amplifiers (OA\´s) has been reported [1]. The extension in bandwidth (BW) is achieved by replacing each of the single OA\´s in the active realization by a suitable composite OA (CNOA) that has been constructed using OA\´s. The use of the CNOA\´s to realize inverting integrators and active filters is presented here. The considerable performance improvement of these realizations is demonstrated both theoretically and experimentally. Their comparison with state-of-the-art designs is also given.