Low-power low-voltage class-AB linear OTA for HF filters with a large tuning range

This letter presents a new low-voltage class-AB differential linear OTA. The proposed transconductor uses a novel scheme based on two cross-coupled class-AB pseudo-differential pairs biased by a Flipped Voltage Follower. The transconductor has been designed using a 0.8 mum CMOS technology to operate...

Full description

Saved in:
Bibliographic Details
Published in:Analog integrated circuits and signal processing 2003-12, Vol.37 (3), p.275-280
Main Authors: Galan, J A, Carvajal, R G, Munoz, F, Torralba, A, Ramirez-Angulo, J
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This letter presents a new low-voltage class-AB differential linear OTA. The proposed transconductor uses a novel scheme based on two cross-coupled class-AB pseudo-differential pairs biased by a Flipped Voltage Follower. The transconductor has been designed using a 0.8 mum CMOS technology to operate at 2V supply voltage with only 260 muW of quiescent power consumption. Simulation results show 90 MHz bandwidth with more than two decades of transconductance tuning range.
ISSN:0925-1030
DOI:10.1023/A:1026238313353