Design of The Differential Difference Operational Floating Amplifier

Today the world can be considered as a small
village; thanks to the existence of low power and
area efficient end user terminal devices. For
instance; if we considered the communication system
architecture; it must include modulator/demodulator,
local oscillators, filters, multipliers and variable
gain amplifiers...etc. All the previously mentioned
circuits are realized using basic circuits like
voltage op-amps. New voltage mode circuits like
differential difference amplifier and differential
difference operational floating amplifier (DDOFA)
were introduced for area and power optimization.
With the DDOFA many analog signal processing
applications can be implemented such as voltage to
current converters, gyrators, floating inductors,
integrators, oscillators, amplifiers, multipliers,
dividers and filters.
Nine novel CMOS realizations for the DDOFA are
proposed in this work, with simulation results
comparison. The newly proposed DDOFA is modified and
transformed to a fully differential current conveyor
(FDCC) which is used to realize different
applications like first, second and sixth order
complex filters.

Autorentext

Eman A. Soliman, BSc. Cairo Uni., 2006. MSc at German Uni. in Cairo (GUC) 2008. Currently Assistant Lecturer in the GUC.Soliman A. Mahmoud, BSc, MSc and PhD in 1994, 1996, and 1999, Cairo Uni. Currently an Associate Prof. & head of Electronics Engineering dep. at GUC. Awarded Science Prize in Advanced Engineering Technology 2005

Klappentext

Today the world can be considered as a small village; thanks to the existence of low power and area efficient end user terminal devices. For instance; if we considered the communication system architecture; it must include modulator/demodulator, local oscillators, filters, multipliers and variable gain amplifiers...etc. All the previously mentioned circuits are realized using basic circuits like voltage op-amps. New voltage mode circuits like differential difference amplifier and differential difference operational floating amplifier (DDOFA) were introduced for area and power optimization. With the DDOFA many analog signal processing applications can be implemented such as voltage to current converters, gyrators, floating inductors, integrators, oscillators, amplifiers, multipliers, dividers and filters. Nine novel CMOS realizations for the DDOFA are proposed in this work, with simulation results comparison. The newly proposed DDOFA is modified and transformed to a fully differential current conveyor (FDCC) which is used to realize different applications like first, second and sixth order complex filters.