Switch Controllable Full Phase Operation Precision Half Wave Rectifier Using a Single OTRA
This paper proposes designing a precision rectification circuit by using a single operational transresistance amplifier (OTRA) The proposed circuit is a switch controllable OTRA based full phase operation precision half wave rectifier, which can rectify an input signal to yield four phase half wave rectified output signals. Compared with existing designs, the advantage of the proposed circuit is that all of the possible rectified outputs of a half wave rectifier can be obtained in one configuration. This paper first reviews previously reported half wave precision rectifiers consisting of various active devices and the proposed OTRA based precision half wave rectifier; subsequently, an analysis of non ideal effects and design considerations are presented. Computer simulations of the proposed circuit were conducted for verifying the feasibility of the circuit by using the Taiwan Semiconductor Manufacturing Company (TSMC) 0.35 mm CMOS process technology. For practical circuit measurements, a prototype circuit was implemented, and commercially integrated circuits (AD844ANs) and discrete passive components were used to conduct experimental tests. The simulation and experimental results exhibited satisfactory agreement with those of theoretical analyses.
J. Circuits Syst. Comput.