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Mostrando ítems 1-10 de 18
Ponencia
A CMOS fully-differential bandpass ΣΔ modulator using switched-current circuits
(Institute of Electrical and Electronics Engineers, 1995)
This paper presents a fourth-order bandpass sigma-delta modulator that has been designed using fully-differential switched-current circuits in a 0.8μm CMOS technology. The modulator prototype has been obtained by applying ...
Ponencia
Reliable analysis of settling errors in SC integrators - application to high-speed low-power ΣΔ modulators design
(1999)
This paper presents a detailed study on the transient response of SC integrators taking into account the effects of amplifier finite gain-bandwidth product and slew-rate during, unlike previous models, both the integration ...
Ponencia
Modeling OpAmp-induced harmonic distortion for switched-capacitor ΣΔ modulator design
(Institute of Electrical and Electronics Engineers, 1994)
This communication reports a new modeling of opamp-induced harmonic distortion in SC ΣΔ modulators, which is aimed to optimum design of this kind of circuit for high-performance applications. We analyze incomplete transfer ...
Ponencia
A Tool for automated design of sigma-delta modulators using statistical optimization
(Institute of Electrical and Electronics Engineers, 1993)
A tool is presented which starting from high level specifications of SC σδ modulators (resolution, bandwidth and oversampling ratio) calculates first optimum specifications for the building blocks (op-amps, comparator, ...
Ponencia
A fourth-order bandpass ΣΔ modulator using current-mode analog/digital circuits
(Institute of Electrical and Electronics Engineers, 1996)
We present a fourth-order bandpass ΣΔ switched-current modulator IC in 0.8 μm CMOS single-poly technology. Its architecture is obtained by applying a lowpass to bandpass transformation (z-1 →-z-2) to a second-order lowpass ...
Ponencia
Artículo
Using CAD tools for shortening the design cycle of high-performance sigma–delta modulators: A 16·4 bit, 9·6 kHz, 1·71 mW ΣΔM in CMOS 0·7 μm technology
(Wiley-Blackwell, 1997)
This paper uses a CAD methodology proposed by the authors to design a low-power 2nd-order Sigma-Delta Modulator (ΣΔM). This modulator has been fabricated in a 0.7μm CMOS technology to be used as the front-end of an ...
Ponencia
Harmonic Distortion in Fully-Differential Switched-Current Sigma-Delta Modulators
(1999)
This paper presents a systematic analysis of the harmonic distortion in SD modulators (SDMs) implemented with fully-differential switched-current (SI) circuits. Closed form expressions are derived for the third-order ...
Ponencia
Design of RC-active oscillators using composite amplifiers
(Institute of Electrical and Electronics Engineers, 1991)
The design of composite opamp Wien-Bridge oscillators is systematically approached by using a general model including amplitude control issues. Two different design criteria are presented and their main features summarized. ...
Ponencia
Using CAD Tools for the Automatic Design of Low-Power ΣΔ Modulators
(1997)
This paper illustrates the use of a CAD methodology to design a high-resolution 2nd-order ZA modulator with optimized power con- sumption.The fabricated prototype in 0.7um CMOS technology features 16.4-bit resolution at ...