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Mostrando ítems 1-10 de 13
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
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
A 2.5MHz 55dB Switched-Current BandPass ΣΔ Modulator for AM Signal Conversion
(Institute of Electrical and Electronics Engineers, 1997)
We present a Switched-Current (SI) fourth-order bandpass ΣΔ modulator IC prototype. It uses fully-differential circuits in 0.8μm CMOS technology to obtain a Dynamic Range (DR) larger than 55dB at 2.5MHz center frequency ...
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 ...
Capítulo de Libro
Tools for Automated Design of ΣΔ Modulators
(Springer, 1997)
We present a set of CAD tools to design ΣΔ modulators. They use statistical optimization to calculate optimum specifications for the building blocks used in the modulators, and optimum sizes for the components in these ...
Artículo
Multi-bit cascade ΣΔ modulator for high-speed A/D conversion with reduced sensitivity to DAC errors
(Institute of Electrical and Electronics Engineers, 1998)
This paper presents a ΣΔ modulator (ΣΔM) which combines single-bit and multi-bit quantization in a cascade architecture to obtain high resolution with low oversampling ratio. It is less sensitive to the non-linearity of ...