An Energy-Efficient Impedance-Boosted Discrete-Time Amplifier Achieving 0.34 Noise Efficiency Factor and 389 MΩ Input Impedance
Abstract
This paper presents a noise-efficient analog front end (AFE) for low-power sensor systems. The proposed AFE employs a low-noise amplifier based on series-parallel converters whose input impedance is boosted to 389 MΩ (39× improvement compared to prior work) using an input-resistance boosting loop and a capacitive positive feedback loop. The AFE achieves the lowest reported noise efficiency factor (NEF) and power efficiency factor (PEF) of 0.34 and 0.1, respectively, while consuming 370 nW. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000627960Publication status
publishedBook title
2023 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits)Pages / Article No.
Publisher
IEEEEvent
Organisational unit
09647 - Jang, Taekwang / Jang, Taekwang
Funding
211210 - Millimeter-scale Secure and Intelligent Computer Class for Internet of Everything (SNF)
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