A 4-μW Bandwidth/Power Scalable Delta-Sigma Modulator Based on Swing-Enhanced Floating Inverter Amplifiers

A 4-μW Bandwidth/Power Scalable Delta-Sigma Modulator Based on Swing-Enhanced Floating Inverter Amplifiers

Zhao, Menglian (Zhejiang University)
Zhao, Yibo (Zhejiang University)
Zhang, H. (TU Delft Electronic Instrumentation)
Hu, Yaopeng (Zhejiang University)
Bao, Yuanxin (Peking University)
Ye, Le (Peking University)
Qu, Wanyuan (Zhejiang University)
Tan, Zhichao (Zhejiang University)

2022

This article presents a fully dynamic scalable switched-capacitor delta-sigma modulator that achieves a 94.1-dB dynamic range (DR). Power-and- bandwidth scalability by only changing the clock frequency is achieved using a capacitively biased and swing-enhanced floating inverter operational transconductance amplifier (OTA). Fabricated in a 180-nm CMOS process, the prototype achieves an signal-to-noise-and-distortion ratio (SNDR) of >87 dB across 4× scaling from 100 to 400 kHz of the sampling frequency f_ S. At 200-kHz f_ S , it achieves an SNDR/DR of 89.3/94.1 dB while consuming 4 μ W , leading to a DR-based Schreier figure of merit (FoM) of 177.1 dB.

Bandwidth (BW) scalable
high resolution
ultra-low power

http://resolver.tudelft.nl/uuid:46ebd931-cb8f-4abe-8cc5-cbfbd5db1ee2

https://doi.org/10.1109/JSSC.2021.3123261

2023-07-01

0018-9200

IEEE Journal of Solid State Circuits, 57 (3), 709-718

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

journal article

© 2022 Menglian Zhao, Yibo Zhao, H. Zhang, Yaopeng Hu, Yuanxin Bao, Le Ye, Wanyuan Qu, Zhichao Tan