A CMOS multi-gain transconductance amplifier and its applications

Hussain Alzaher

doi:10.1007/s10470-018-1178-5

A CMOS multi-gain transconductance amplifier and its applications

Hussain Alzaher^*

^*Corresponding author for this work

Department of Electrical Engineering

Research output: Contribution to journal › Letter › peer-review

Abstract

Transconductance amplifier (g_m) based circuits are attractive due to their inherent programmability features. Single output g_m’s are often replaced by multi-output g_m’s to reduce the number of active devices for a given application. However, this usually results in losing the circuit programmability features. This work shows that this problem can be circumvented through adopting a new programmable multi-gain g_m. The advantages of the proposed multi-gain g_m are demonstrated using two filter design examples. They show that the proposed multi-gain g_m reduces the number of active devices by two-third compared with their single output g_m based counterparts while maintaining their versatile programmability characteristics. Experimental results obtained from a 0.18 μm CMOS process for one of the applications are provided.

Original language	English
Pages (from-to)	357-364
Number of pages	8
Journal	Analog Integrated Circuits and Signal Processing
Volume	95
Issue number	2
DOIs	https://doi.org/10.1007/s10470-018-1178-5
State	Published - 1 May 2018

Bibliographical note

Publisher Copyright:
© 2018, Springer Science+Business Media, LLC, part of Springer Nature.

Keywords

CMOS analog filter design
Programmable devices
Transconductance amplifier

ASJC Scopus subject areas

Signal Processing
Hardware and Architecture
Surfaces, Coatings and Films

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10.1007/s10470-018-1178-5

Cite this

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AB - Transconductance amplifier (gm) based circuits are attractive due to their inherent programmability features. Single output gm’s are often replaced by multi-output gm’s to reduce the number of active devices for a given application. However, this usually results in losing the circuit programmability features. This work shows that this problem can be circumvented through adopting a new programmable multi-gain gm. The advantages of the proposed multi-gain gm are demonstrated using two filter design examples. They show that the proposed multi-gain gm reduces the number of active devices by two-third compared with their single output gm based counterparts while maintaining their versatile programmability characteristics. Experimental results obtained from a 0.18 μm CMOS process for one of the applications are provided.

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A CMOS multi-gain transconductance amplifier and its applications

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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