Sigma-delta modulators: Tutorial overview, design guide, and state-of-the-art survey

JM de la Rosa - IEEE Transactions on Circuits and Systems I …, 2010 - ieeexplore.ieee.org
This paper presents a tutorial overview of ΣΔ modulators, their operating principles and
architectures, circuit errors and models, design methods, and practical issues. A review of …

Analysis and design of voltage-controlled oscillator based analog-to-digital converter

J Kim, TK Jang, YG Yoon… - IEEE Transactions on …, 2009 - ieeexplore.ieee.org
A voltage-controlled oscillator (VCO) based analog-to-digital converter (ADC) is a time-
based architecture with a first-order noise-shaping property, which can be implemented …

A 16-element fully integrated 28-GHz digital RX beamforming receiver

R Lu, C Weston, D Weyer, F Buhler… - IEEE Journal of Solid …, 2021 - ieeexplore.ieee.org
A 16-element fully integrated 28-GHz digital beamformer combines with a custom eight-layer
LTCC substrate with a 4× 4 patch antenna array for a complete 16-element single-chip 28 …

A Power Optimized Continuous-Time ADC for Audio Applications

S Pavan, N Krishnapura… - IEEE Journal of Solid …, 2008 - ieeexplore.ieee.org
We present design considerations for low-power continuous-time modulators. Circuit design
details and measurement results for a 15 bit audio modulator are given. The converter …

A 174.3-dB FoM VCO-Based CT Modulator With a Fully-Digital Phase Extended Quantizer and Tri-Level Resistor DAC in 130-nm CMOS

S Li, A Mukherjee, N Sun - IEEE Journal of Solid-State Circuits, 2017 - ieeexplore.ieee.org
This paper presents a high dynamic range (DR) power-efficient voltage-controlled oscillator
(VCO)-based continuous-time ΔΣ modulator. It introduces a robust and low-power fully …

A 3-axis gyroscope for electronic stability control with continuous self-test

GK Balachandran, VP Petkov, T Mayer… - IEEE Journal of Solid …, 2015 - ieeexplore.ieee.org
A three-axis automotive gyroscope ASIC for electronic stability control (ESC) with noise
density that is less than 0.004°/s/√ Hz in a 80 Hz bandwidth and an offset drift lower …

A 10/20/30/40 MHz Feedforward FIR DAC Continuous-Time ADC With Robust Blocker Performance for Radio Receivers

S Loeda, J Harrison, F Pourchet… - IEEE Journal of Solid …, 2016 - ieeexplore.ieee.org
The first feedforward continuous-time ΔΣ ADC with a finite impulse response (FIR) DAC is
presented for consumer radio applications. It provides robust loop-delay compensation with …

A Second-Order Purely VCO-Based CT ADC Using a Modified DPLL Structure in 40-nm CMOS

Y Zhong, S Li, X Tang, L Shen, W Zhao… - IEEE Journal of Solid …, 2019 - ieeexplore.ieee.org
This article presents a power-efficient purely voltage-controlled oscillator (VCO)-based
second-order continuous-time (CT) ΔΣ analog-to-digital converter (ADC), featuring a …

A time-based bandpass ADC using time-interleaved voltage-controlled oscillators

YG Yoon, J Kim, TK Jang… - IEEE Transactions on …, 2008 - ieeexplore.ieee.org
In this paper, a bandpass analog-to-digital converter (ADC) based on time-interleaved
oversampled ADC is introduced. Unlike previous delta-sigma bandpass ADCs that require …

A W > 2.2 G DC–AC Configurable CMOS Front-End IC for Wearable ECG Monitoring

W Bai, Z Zhu, Y Li, L Liu - IEEE Sensors Journal, 2018 - ieeexplore.ieee.org
This paper presents a low-power and high input impedance dc–ac configurable CMOS front-
end integrated circuit (IC) for wearable ECG monitoring. This IC mainly includes three parts …