Power-efficient single-stage class-AB OTA based on non-linear nested current mirrors

J Beloso-Legarra, A Carlos… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
A novel approach to design low-power area-efficient rail-to-rail output single-stage class-AB
operational transconductance amplifiers (OTAs) with enhanced large-and small-signal …

A Sub 1-V Constant Switched-Capacitor Current Source

BR Gregoire, UK Moon - … on Circuits and Systems II: Express …, 2007 - ieeexplore.ieee.org
A switched-capacitor bias that provides a constant G mC characteristic over process and
temperature variation is presented. The bias can be adapted for use with subthreshold …

High-accuracy function synthesizer circuit with applications in signal processing

C Popa - EURASIP Journal on advances in Signal Processing, 2012 - Springer
An original low-voltage current-mode high-accuracy function synthesizer circuit will be
presented, allowing to implement a multitude of continuous mathematical functions. The …

Design of square‐root domain filters by substituting the passive elements of the prototype filter by their equivalents

C Psychalinos - International Journal of Circuit Theory and …, 2008 - Wiley Online Library
A novel technique for designing square‐root domain (SRD) filters is introduced in this paper.
The concept of the proposed method is based on the substitution of the passive elements of …

Low-voltage improved accuracy Gaussian function generator with fourth-order approximation

C Popa - Microelectronics Journal, 2012 - Elsevier
An original realization of a CMOS Gaussian function generator is presented. The proposed
method is based on a new approximation function that is able to fourth-order match the …

Low-voltage CMOS current-mode exponential circuit with 70 dB output dynamic range

CR Popa - Microelectronics Journal, 2013 - Elsevier
The paper proposes new accurate exponential circuits, having a multitude of practical
applications in analog signal processing. The original method for obtaining the exponential …

Limit cycle behavior in a class-AB second-order square root domain filter

CA De La Cruz-Blas, O Feely - Analog Integrated Circuits and Signal …, 2011 - Springer
This article shows how an unwanted limit cycle can be exhibited by a second-order CMOS
companding filter. The filter employs the quasi-quadratic law of the MOS transistor in strong …

A low-voltage square-root domain n-th order multifunction FLF filter topology

E Stoumpou, FA Khanday, C Psychalinos… - … Integrated Circuits and …, 2009 - Springer
A novel n-th order Follow the Leader Feedback (FLF) multifunction low-voltage filter
topology, realized by employing the concept of Square-Root Domain (SRD) filtering, is …

High accuracy CMOS multifunctional structure for analog signal processing

C Popa - 2009 International Semiconductor Conference, 2009 - ieeexplore.ieee.org
An original low-power low-voltage multifunctional structure with improved precision will be
presented, performing many important circuit functions: signal amplifying, voltage …

Harmonic bandwidth companding for separation of overlapping harmonics in pitched signals

M Zivanovic - IEEE/ACM Transactions on Audio, Speech, and …, 2015 - ieeexplore.ieee.org
We present a novel approach to separating pitched signals from single-channel mixtures by
harmonic bandwidth companding. Recalling that in a short analysis window the harmonic …