Design-to-testing: a low-power, 1.25 GHz, single-bit single-loop continuous-time $$\Delta \Sigma$$ΔΣ modulator with 15 MHz bandwidth and 60 dB dynamic range
Sign Up to like & getrecommendations! Published in 2017 at "Analog Integrated Circuits and Signal Processing"
DOI: 10.1007/s10470-016-0865-3
Abstract: Continuous-time Delta-Sigma (CT-$$\Delta \Sigma$$ΔΣ) analog-to-digital converters have been extensively investigated for their use in wireless receivers to achieve conversion bandwidths >15 MHz and higher resolution of 10–14 bits. This paper presents the complete design-to-testing tutorial of a… read more here.
Keywords: delta sigma; sigma; time delta; continuous time ... See more keywords
A continuous-time delta-sigma ADC for portable ultrasound scanners
Sign Up to like & getrecommendations! Published in 2017 at "Analog Integrated Circuits and Signal Processing"
DOI: 10.1007/s10470-017-1004-5
Abstract: A fully differential fourth-order 1-bit continuous-time delta-sigma ADC designed in a 65 nm process for portable ultrasound scanners is presented in this paper. The circuit design, implementation and measurements on the fabricated die are shown. The… read more here.
Keywords: delta sigma; sigma adc; time delta; ultrasound scanners ... See more keywords
Design of High-Resolution Continuous-Time Delta–Sigma Data Converters With Dual Return-to-Open DACs
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2022.3176876
Abstract: We present design techniques for single-bit continuous-time delta–sigma modulators that attain high resolution (>16 bits) over a bandwidth (BW) that is more than ten times the audio range. We introduce the zapped, virtual-ground-switched dual return-to-open… read more here.
Keywords: dual return; continuous time; time delta; delta sigma ... See more keywords
Analysis of Chopped Integrators, and Its Application to Continuous-Time Delta-Sigma Modulator Design
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2017.2682884
Abstract: Chopping is a commonly used technique to eliminate flicker noise in amplifiers. We investigate the use of chopping in the input integrator of a continuous-time oversampling ( $\Delta \!\Sigma $ ) converter. Unlike an amplifier,… read more here.
Keywords: delta sigma; analysis; time; time delta ... See more keywords
Analysis and Modeling of Chopping Phase Non-Overlap in Continuous-Time $\Delta\Sigma$ Modulators
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2018.2825377
Abstract: Chopping is a technique to reduce offset and flicker noise in amplifiers by up-converting them to higher frequency, and subsequently filtering them out. A typical chopping implementation uses two complementary phases which have a finite… read more here.
Keywords: delta sigma; chopping phase; non overlap; time ... See more keywords
Unified Analysis, Modeling, and Simulation of Chopping Artifacts in Continuous-Time Delta-Sigma Modulators
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2019.2907167
Abstract: Chopping is an efficient way of mitigating the effect of flicker noise in continuous-time delta-sigma modulators (CT ${\Delta \Sigma }$ Ms). Unfortunately, chopping causes the demodulation of shaped quantization noise into the signal band. Prior… read more here.
Keywords: time; delta sigma; continuous time; time delta ... See more keywords