A Time-Interleaved 2nd-Order ΔΣ Modulator Achieving 5-MHz Bandwidth and 86.1-dB SNDR Using Digital Feed-Forward Extrapolation

D Jiang, L Qi, SW Sin, F Maloberti… - IEEE Journal of Solid …, 2021 - ieeexplore.ieee.org
This article presents a time-interleaved (TI) 2nd-order discrete-time (DT) delta-sigma
modulator (DSM). We propose a digital feed-forward extrapolation by first digitizing the …

[PDF][PDF] Asynchronous level crossing ADC design for wearable devices: a review

A Antony, SR Paulson, DJ Moni - Int J Appl Eng Res, 2018 - academia.edu
Asynchronous level crossing ADCs (LC ADC) saves power through non-uniform sampling
making it suitable for wearable devices. This paper presents a review of asynchronous level …

A 2 mW, 50 dB DR, 10 MHz BW 5 Interleaved Bandpass Delta-Sigma Modulator at 50 MHz IF

I Lee, G Han, Y Chae - … Transactions on Circuits and Systems I …, 2014 - ieeexplore.ieee.org
A 2 mW 50 dB-DR 10 MHz-BW bandpass (BP) delta-sigma (ΔΣ) modulator for a digital-IF
receiver is presented. It is based on a power-efficient time-interleaved (TI) architecture …

Constant-Resistance CMOS Input Sampling Switch for GSM/WCDMA High Dynamic Range Modulators

OA Adeniran, A Demosthenous - IEEE Transactions on Circuits …, 2008 - ieeexplore.ieee.org
The nonlinearity of the input sampling switch in a switched-capacitor delta-sigma
(DeltaSigma) analog-to-digital converter (ADC) affects the overall performance of the ADC …

On the Design of Undersampling Continuous-Time Bandpass Delta–Sigma Modulators for Gigahertz Frequency A/D Conversion

A Naderi, M Sawan, Y Savaria - IEEE Transactions on Circuits …, 2008 - ieeexplore.ieee.org
This paper describes issues and tradeoffs related to the design of undersampling delta-
sigma modulators (DeltaSigmaMs) for wireless receivers. It proposes a new bandpass …

Extended noise shaping in sigma-delta modulator using cross-coupled paths

B Hamidi, H Miar-Naimi - … on Circuits and Systems I: Regular …, 2014 - ieeexplore.ieee.org
In this paper, combined with time-interleaving, noise coupling is used to achieve
considerable improvement in the performance of sigma-delta modulator. Two types of noise …

Parallel Continuous-Time ADC for OFDM UWB Receivers

J Arias, L Quintanilla, J Segundo… - … on Circuits and …, 2008 - ieeexplore.ieee.org
A parallel multibit continuous-time (CT) ΔΣ analog-to-digital converter for an orthogonal-
frequency-division-multiplexing (OFDM) ultrawideband receiver intended to operate …

Analysis and Design Optimization of a 2-Path Sigma Delta Modulator

R Barzegar, HM Naimi - Journal of Circuits, Systems and …, 2022 - World Scientific
This paper presents a new design for the optimization of analog to digital sigma delta-
coupling noise annotations. The proposed technique increases the level of the signal-to …

Design considerations for fast-settling two-stage Miller-compensated operational amplifiers

FA Amoroso, A Pugliese… - 2009 16th IEEE …, 2009 - ieeexplore.ieee.org
The settling behavior of two-stage Miller-compensated operational amplifiers (op-amps) is
investigated in this paper. The analysis aims to evaluate the real effectiveness of …

Analysis of the impact of high-order integrator dynamics on SC sigma-delta modulator performances

A Pugliese, FA Amoroso, G Cappuccino… - … on Circuits and …, 2009 - ieeexplore.ieee.org
The impact of high-order integrator dynamics on switched-capacitor sigma-delta modulator
(¿¿ M) performances is investigated in this paper. An advanced generic integrator-settling …