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Two simple sinusoidal oscillators using single Operational Transresistance Amplifier

This paper illustrates two sinusoidal oscillators based on single Operational Transresistance Amplifier (OTRA). The proposed circuits require a single OTRA and a few passive components to generate the oscillations. The proposed circuit's frequency of oscillation and condition of oscillation are given. The proposed circuits have been examined using Cadence 180 nm CMOS model parameters. These circuits have been constructed using commercially available current feedback amplifier (AD844 AN) and later on passive components were connected externally and tested for waveform generation. The results obtained demonstrate excellent agreement with theoretical values.