Open AccessFree class‐AB flipped voltage follower using bulk‐driven technique
Author(s) -
MolinarSolis J.E.,
GurrolaNavarro M.A.,
Padilla I.,
Ocampo J.J.,
Muñiz C.
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.0768
Subject(s) - slew rate , spice , buffer amplifier , electronic engineering , transistor , cmos , voltage , topology (electrical circuits) , class (philosophy) , computer science , engineering , electrical engineering , artificial intelligence
A new configuration of the flipped voltage follower (FVF) offering class‐AB operation is presented. The idea uses a bulk‐driven transistor instead of the constant current source of the typical FVF topology. This feature enhances the sourcing capability for class‐AB operation and the symmetrical slew rate. The key element is changing the basic structure of the original FVF circuit with no additional devices. A detailed analysis of the circuit and simulations using Spice are presented. The experimental results from a manufactured circuit prototype using CMOS 0.35 μm technology demonstrate the feasibility of the proposal.