An efficient and energy saving CMOS integrated full wave rectifier

Abstract

This study addresses newly designed precision full-wave rectifier realized with a dual-X second generation current conveyor without use of any diodes. The design comprises single dual-X second generation current conveyor, three MOS switches along with two resistors. The use of minimum active device leads to the simpler circuitry and suitability to contemporary integration technology. The circuit is designed without any diodes, so there is no limitation of rectifying the signals under threshold voltage. The prime attributes of the proposed circuit are simplicity in design, good operating frequency, low power consumption, ease of cascadability, low output offset current, low value of ripple and comparatively low THD. The circuit is validated via post-layout simulations which are carried out using Cadence Virtuoso tool with 0.18 µm technology. The circuit shows robust performance against process, voltage and temperature variations. The layout of dual-X second generation current conveyor is designed that measures an area of 23 µm × 21 µm.

Keywords

• Analog circuit
• Full wave rectifier
• Precision rectifier
• Current-mode
• Current Conveyor