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Paper Information

Journal:   INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE (ENGLISH)   Winter 2003 , Volume 14 , Number 1; Page(s) 113 To 119.
 
Paper: 

LOW-DISTORTION AND LOW - VOLTAGE TRANSCONDUCTOR WITH ADJUSTABLE TRANSCONDUCTANCE

 
 
Author(s):  ROUEINTAN LAHIJI GH.H., ABRISHAMIFAR A.
 
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Abstract: 
High dynamic range and adjustability of gain are the main requirements in low-voltage audio-frequency transconductors. There are several methods for designing a low voltage transconductor however, most of them have a fixed transconductance over their input range. In this paper a low distortion ohmic transconductor with adjustable gain has been designed. The circuit can operate from 3 V single power supply and has a very low distortion by choosing normal dimension for W/L of feedback transistors. To consider stray capacitances of the circuit we also perform L-Edit extraction. Then the final circuit has been carried out with 0.8.um CMOS Technology. Simulation has resulted a very low distortion as small as 0.2% for a 1.8Vpp sinusoidal input.
 
Keyword(s): TOTAL HARMONIC DISTORTION, OHMIC TRANSCONDUCTOR, LOW-VOLTAGE TRANSCONDUCTOR, LINEAR TRANSCONDUCTOR
 
References: 
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