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International Journal of

Recent Trends in Engineering

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International Journal of Recent Trends in Engineering (IJRTE)

ISSN 1797-9617

Volume 1, Number 3, May 2009

Issue on Electrical & Electronics

Page(s): 72-75

OTA-based Non-Inverting and Inverting Precision Full-Wave Rectifier Circuits without diodes

Nigar Minhaj

Full text: PDF


A three output operational transconductance amplifier (OTA) with two complementary MOS transistors and a grounded resistor is used to realize non-inverting and inverting full-wave precision rectifiers. The attractive features of the proposed rectifiers are; high input impedance, large input operating range, high frequency operation, low zero crossing distortion, linearity, low component count and suitable for IC fabrication. SPICE simulation results, with 0.5 mm CMOS model obtained through MIETEC, are included to verify the proposed circuits.

Index Terms

Analog circuits; current conveyors; rectifiers

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