Time-encoding analog-to-digital converters: Bridging the analog gap to advanced digital cmos-part 1: Basic principles

GGE Gielen, L Hernandez… - IEEE Solid-State Circuits …, 2020 - ieeexplore.ieee.org
The scaling of CMOS technology deep into the nanometer range has created challenges for
the design of highperformance analog ICs. The shrinking supply voltage and presence of …

A 5-GS/s 7.2-ENOB time-interleaved VCO-based ADC achieving 30.5 fJ/cs

M Baert, W Dehaene - IEEE Journal of Solid-State Circuits, 2019 - ieeexplore.ieee.org
This article presents an eight-channel time-interleaved voltage-controlled oscillator (VCO)-
based analog-to-digital converter (ADC), achieving 7.2 effective number of bits (ENOBs) at 5 …

A 74.5-dB Dynamic Range 10-MHz BW CT-ΔΣ ADC With Distributed-Input VCO and Embedded Capacitive-π Network in 40-nm CMOS

A Mukherjee, M Gandara, X Yang… - IEEE Journal of Solid …, 2020 - ieeexplore.ieee.org
This work introduces a second-order voltage-controlled oscillator (VCO)-based continuous-
time delta-sigma modulator (CTDSM) that incorporates a distributed-input VCO as the …

An 18.1 mW 50 MHz-BW 76.4 dB-SNDR CTSDM with PVT-robust VCO quantizer and latency-free background-calibrated DAC

Y Guo, J **, X Liu, J Zhou - … on Circuits and Systems I: Regular …, 2022 - ieeexplore.ieee.org
This paper presents a continuous-time sigma-delta modulator (CTSDM) with a voltage-
controlled-oscillator-based (VCO-based) integrating quantizer. A background replica-based …

Analysis of VCO-Based Continuous-Time ΣΔ ADCs Using a Subset of Phases as the Feedback Signal

V Medina, LM Alvero-Gonzalez… - … on Circuits and …, 2024 - ieeexplore.ieee.org
High speed Continuous-Time Analog-to-Digital converters (ADC) have a limited sampling
frequency that bounds their performance with a low resolution Flash ADC. This brief …

Time-encoding VCO-ADCs for Integrated Systems-on-Chip

G Gielen, L Hernandez-Corporales… - Cham, Switzerland …, 2022 - Springer
Nowadays consumer electronics is mostly driven by low-power ubiquitous applications like
mobile communications, Internet of Things (IoT), or wearable devices. Most of these …

Mixed-Order Correlated Dual-Loop Sturdy MASH CT- Modulator With Distributed Signal Feed-In and VCO Quantizer

X Xu, B Park, M Guzman, Y Chen… - IEEE Journal of Solid …, 2024 - ieeexplore.ieee.org
This article presents a new structure of multi-loop continuous-time delta-sigma modulator
(CTDSM) with voltage-controlled oscillator-based quantizer (VCO-Q) featuring a robust …

A 10-MHz BW 77.3-dB SNDR 640-MS/s GRO-Based CT MASH ΔΣ Modulator

M Honarparvar, JM de La Rosa… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
We present in this brief a novel multi-stage noise-sha** (MASH) 3–1 continuous-time (CT)
delta-sigma modulator () with gated ring oscillator based quantizers (GROQs) in both stages …

A 70dB SNDR 20MHz-BW VCO-Based CT Sturdy MASH Delta-Sigma Modulator with Robust Quantization Error Extraction

X Gui, X Zheng, H Feng, G Gielen… - … on Circuits and …, 2024 - ieeexplore.ieee.org
This paper presents a continuous-time (CT) Sturdy multistage noise-sha** (SMASH) Delta-
sigma Modulator (DSM), proposing a quantization noise extraction scheme without …

A Synthesizable 0.0060mm2 VCO-Based Delta Sigma Modulator with Digital Tri-level Feedback Scheme

J Wang, Z Yang, J Wang, X Cheng… - 2021 IEEE Asian …, 2021 - ieeexplore.ieee.org
A low-power, small-area, and medium-resolution analog-to-digital converter (ADC) is one of
the critical building blocks in a system-on-chip (SoC). But it is also a primary bottleneck of …