Current-Mode Precision Full-Wave Rectifier Circuits

In this paper, a new current-mode precision full-wave rectifier is presented. The proposed circuit employs a single active element namely extra-X current conveyor and two NMOS transistors without using any passive element which is suitable for IC implementation. The circuit exhibits low input impedance and high output impedance, so it is easily cascadable. The non-idealities and the parasitics effects on the circuit are also discussed. The detailed Monte Carlo analysis and distortion study is also carried out along with supporting results. The functionality of the proposed current-mode precision full-wave rectifier is verified through PSPICE simulation using 0.25 μm\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\upmu \hbox {m}$$\end{document} TSMC CMOS technology parameters. The proposal is also supported by experimental result.