Multiphase Sinusoidal Oscillators using Current Feedback Operational Amplifiers

A voltage-mode multiphase oscillator topology is introduced in this paper. It is realized by employing current feedback operational amplifiers and only grounded passive elements. Compared with the corresponding already known topology, the offered benefits are the capability for obtaining both odd and even number of phases without modifying the core of the topology and the absence of employment of the CFOA parasitic poles. The behaviour of the proposed topology has been evaluated through experimental results, by utilizing the AD844 discrete CFOA component.