A 2-GS/s 35.9-fJ/conv.-step Voltage–Time Hybrid Pipelined ADC with Digital Background Calibration in 28-nm CMOS

. At 2 GS/s, the ADC achieves a Nyquist SNDR of 63.42 dB and an SFDR of 73.71 dB, corresponding to an ENOB of 10.24 bits. Consuming 86.9 mW from a 1-V supply, it achieves a Walden FoM of 35.9 fJ/conv.-step. Measurement results from multiple chips under a wide range of operating conditions verify the robustness of the proposed ADC.

Authors

Yuan Chang (ORCID: https://orcid.org/0000-0002-9790-4529)
Dongdong Chen (ORCID: https://orcid.org/0000-0002-5065-4374)
Chaoyang Zhang (ORCID: https://orcid.org/0000-0003-3634-7324)
Maliang Liu
Yihang Yang
Yintang Yang (ORCID: https://orcid.org/0000-0001-9745-5404)
Chenghao Zhang

Institutions

Xidian University (CN)

Publication Details

Journal: Micromachines
Published: 2026-04-17
DOI: https://doi.org/10.3390/mi17040495
Primary Topic: Analog and Mixed-Signal Circuit Design
Type: article
Field-Weighted Citation Impact: 0.00

Funders

National Natural Science Foundation of China
National Science and Technology Major Project

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article

A 2-GS/s 35.9-fJ/conv.-step Voltage–Time Hybrid Pipelined ADC with Digital Background Calibration in 28-nm CMOS

Yuan Chang, Dongdong Chen, Chaoyang Zhang, Maliang Liu et al.

Apr 17, 2026

Micromachines

Analog and Mixed-Signal Circuit Design

article

A 2-GS/s 35.9-fJ/conv.-step Voltage–Time Hybrid Pipelined ADC with Digital Background Calibration in 28-nm CMOS

Yuan Chang, Dongdong Chen, Chaoyang Zhang, Maliang Liu, Yihang Yang, Yintang Yang, Chenghao Zhang

April 17, 2026article en

Abstract

. At 2 GS/s, the ADC achieves a Nyquist SNDR of 63.42 dB and an SFDR of 73.71 dB, corresponding to an ENOB of 10.24 bits. Consuming 86.9 mW from a 1-V supply, it achieves a Walden FoM of 35.9 fJ/conv.-step. Measurement results from multiple chips under a wide range of operating conditions verify the robustness of the proposed ADC.

MicromachinesVol. 17(4)

Xidian University (CN)

National Natural Science Foundation of China, National Science and Technology Major Project

Affordable and clean energy

Openalex Percentile: Top 22%

Analog and Mixed-Signal Circuit Design

DOI Open Access PDF OpenAlex

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