Design and Analysis of an Ultra-Low-Power Second-Order Asynchronous Delta–Sigma Modulator
Sign Up to like & getrecommendations! Published in 2017 at "Circuits, Systems, and Signal Processing"
DOI: 10.1007/s00034-017-0658-7
Abstract: In this paper, a second-order asynchronous delta–sigma modulator is proposed based on the active-RC integrators. The operational transconductance amplifiers used in the integrators are improved by employing a class-AB structure with bulk-driven input drivers and… read more here.
Keywords: order; asynchronous delta; delta sigma; second order ... See more keywords
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
An All-Digital Low-Noise Switching DC–DC Buck Converter Based on a Multi-sampling Frequency Delta-Sigma Modulation with Enhanced Light-Load Efficiency
Sign Up to like & getrecommendations! Published in 2019 at "Arabian Journal for Science and Engineering"
DOI: 10.1007/s13369-019-03955-y
Abstract: This paper presents an all-digital technique to control DC–DC switching buck converters for noise-sensitive low-power applications. The controller is designed based on a multi-sampling frequency digital delta-sigma modulator, whose sampling frequency is adjusted according to… read more here.
Keywords: light load; delta sigma; frequency; load ... See more keywords
A Low-Noise Fast-Transient-Response Delta-Sigma-Modulation Buck Converter with Hysteresis-Voltage-Controlled Techniques
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3183028
Abstract: A low-noise fast-transient-response second-order delta-sigma-modulation buck converter with hysteresis-voltage-controlled techniques is proposed. With the proposed control approach, the transient time can be accelerated by roughly 60%. The rail-to-rail OTA generates a current ISense, which replicates… read more here.
Keywords: hysteresis voltage; delta sigma; sigma modulation; voltage controlled ... See more keywords
Wideband 1-Bit Bandpass Delta Sigma Modulator Using Elliptic Filter in Noise Transfer Function
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3196380
Abstract: A 1-bit band-pass delta-sigma modulator (BP-DSM), which utilizes oversampling technology, allows a modulated signal to be directly output by using a high-speed 1-bit digital pulse train, thus realizing miniaturization of transmitters. For 1-bit BP-DSM, the… read more here.
Keywords: noise; bit; delta sigma; filter ... See more keywords
Digital OFDM-PON Based on Delta–Sigma Modulation Employing Binary IM-DD Channels
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2016.2639040
Abstract: In this paper, a delta–sigma modulation is proposed for the orthogonal frequency division multiplexed-passive optical network (OFDM-PON) to enable transmission of OFDM signals via binary intensity modulation and direct detection (IM-DD) channels. The delta–sigma modulation… read more here.
Keywords: ofdm pon; delta sigma; sigma modulation;
A 4-μW Bandwidth/Power Scalable Delta–Sigma Modulator Based on Swing-Enhanced Floating Inverter Amplifiers
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2021.3123261
Abstract: This article presents a fully dynamic scalable switched-capacitor delta–sigma modulator that achieves a 94.1-dB dynamic range (DR). Power-and- bandwidth scalability by only changing the clock frequency is achieved using a capacitively biased and swing-enhanced floating… read more here.
Keywords: inline formula; delta sigma; tex math;
A 0.9-V DAC-Calibration-Free Continuous-Time Incremental Delta–Sigma Modulator Achieving 97-dB SFDR at 2 MS/s in 28-nm CMOS
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2022.3160325
Abstract: This article shows the design of a wideband 3-0 sturdy-multi-stage noise-shaping (SMASH) continuous-time (CT) incremental delta–sigma (I- $\boldsymbol {\Delta \Sigma }$ ) analog-to-digital converter (ADC). The two stages’ quantizers (QTZs) are implemented by a single… read more here.
Keywords: continuous time; delta; delta sigma; modulator ... See more keywords
A 950 MHz Clock 47.5 MHz BW 4.7 mW 67 dB SNDR Discrete Time Delta Sigma ADC Leveraging Ring Amplification and Split-Source Comparator Based Quantizer in 28 nm CMOS
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2022.3163819
Abstract: This article presents a delta sigma modulator (DSM) analog to digital (ADC) that uses ring amplifiers as integrators to relax speed and efficiency bottlenecks in discrete-time (DT) oversampled ADCs. Its multi-bit quantizer is based on… read more here.
Keywords: mhz; discrete time; split source; delta sigma ... 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