A 12-bit 30-MS/s VCO-based SAR ADC with NOC-assisted multiple adaptive bypass windows
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Semiconductors"
DOI: 10.1088/1674-4926/41/11/112401
Abstract: This paper proposes a technique that uses the number of oscillation cycles (NOC) of a VCO-based comparator to set multiple adaptive bypass windows in a 12-bit successive approximation register (SAR) analog-to-digital converter (ADC). The analysis… read more here.
Keywords: multiple adaptive; bypass; vco based; adc ... See more keywords
A 0.5–1.1-V Adaptive Bypassing SAR ADC Utilizing the Oscillation-Cycle Information of a VCO-Based Comparator
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2018.2885554
Abstract: A successive approximation register (SAR) analog-to-digital converter (ADC) with a voltage-controlled oscillator (VCO)-based comparator is presented in this paper. The relationship between the input voltage and the number of oscillation cycles (NOC) to reach a… read more here.
Keywords: sar; vco based; based comparator; adaptive bypassing ... See more keywords
A Noise-Shaped VCO-Based Nonuniform Sampling ADC With Phase-Domain Level Crossing
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2019.2892426
Abstract: This paper introduces a voltage-controlled oscillator (VCO)-based nonuniform sampling (NUS) analog-to-digital converter (ADC), which shifts the conventional voltage-domain level crossing to the phase domain, thus eliminating the need for any continuous-time (CT) comparator or reference… read more here.
Keywords: vco based; phase domain; noise; based nonuniform ... See more keywords
A 96.9-dB-Resolution 109-μW Second-Order Robust Closed-Loop VCO-Based Sensor Interface for Multiplexed Single-Ended Resistance Readout in 180-nm CMOS
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2022.3163284
Abstract: This article presents a highly digital robust voltage-controlled oscillator (VCO)-based front end for multiplexed single-ended resistive sensor readout applications. The architecture features a modified digital phase-locked loop (DPLL) structure that enables second-order noise shaping without… read more here.
Keywords: multiplexed single; vco; single ended; readout ... See more keywords
Exploring Speed Maximization of Frequency-to-Digital Conversion for Ultra-Low-Voltage VCO-Based ADCs
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2022.3223468
Abstract: A frequency-to-digital converter (FDC) performs the role of precise frequency digitization within a voltage-controlled oscillator (VCO)-based ADC. To be compatible with energy-harvesting (EH) Internet-of-Things (IoT) devices, the development of ultra-low-voltage (ULV) FDCs is crucial, where… read more here.
Keywords: frequency; low voltage; voltage; maximization ... See more keywords
Johnson Counter-Based Multiphase Generation for VCO-Based ADC for Direct Digitization of Low Amplitude Sensor Signals
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2023.3265121
Abstract: Voltage-controlled oscillator (VCO)-based analog-to-digital converter (ADC) have been used for the direct digitization of sensor signals. This article proposes a Johnson counter (JC) based multiphase generation for VCO-based ADC for direct digitization of low amplitude… read more here.
Keywords: direct digitization; johnson counter; sensor signals; vco based ... See more keywords