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Variable gain current mirror for high-speed applications

Behnam Sedighi, Mehrdad Sharif Bakhtiar

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Behnam Sedighi
Department of electrical engineering, Sharif University of Technology
Mehrdad Sharif Bakhtiar
Department of electrical engineering, Sharif University of Technology

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Keywords:CMOS,current mirror,current amplifier,tunable gain

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2007 Volume 4Issue 8Pages 277-281

DOIhttps://doi.org/10.1587/elex.4.277

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Published: 2007Received: March 15, 2007Available on J-STAGE: April 25, 2007Accepted: March 27, 2007Advance online publication: -Revised: -

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Abstract

This paper presents a new high speed current mirror with continuous gain adjustment. Based on this current mirror, a variable gain current amplifier is designed in 0.18µm CMOS technology. The current gain of the amplifier can be continuously varied from 0dB to 20dB while the bandwidth of the circuit remains above 100MHz. The circuit consumes 0.9mW from 1.5V supply.

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