Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/144727
Title: An inverted ring oscillator noise-shaping time-to-digital converter with in-band noise reduction and coherent noise cancellation
Authors: Yi, Xiang
Liang, Zhipeng
Boon, Chirn Chye
Feng, Guangyin
Meng, Fanyi
Yang, Kaituo
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Yi, X., Liang, Z., Boon, C. C., Feng, G., Meng, F., & Yang, K. (2019). An inverted ring oscillator noise-shaping time-to-digital converter with in-band noise reduction and coherent noise cancellation. IEEE Transactions on Circuits and Systems I: Regular Papers, 67(2), 686-698. doi:10.1109/TCSI.2019.2949732
Journal: IEEE Transactions on Circuits and Systems I: Regular Papers
Abstract: This article presents a noise-shaping time-to-digital converter (TDC) based on an inverted ring oscillator (IRO). By inverting the oscillation direction, the proposed IRO-TDC achieves quantization error and mismatch noise shaping, in-band noise reduction, coherent noise cancellation, and low disturbance to power supply at the same time. A noise model is proposed to analyze the noise performance of the proposed TDC, and to compare its noise with TDCs based on gated ring oscillator (GRO) and switched ring oscillator (SRO). An IRO-TDC prototype is fabricated in a 65 nm CMOS technology to verify the proposed IRO technique and noise model. With a sampling rate of 200 MS/s, the TDC achieves an integrated noise of 196 fsrms in a 3 MHz bandwidth with a constant power dissipation of 13.2 mW. The measured coherent noise cancellation ratio is up to 36.4 dB. To the best of our knowledge, this is the first demonstration of an oscillator utilizing oscillation inversion for noise reduction and coherent cancellation to protect the TDC from power supply noise, ground noise, and substrate noise. Due to its noise cancellation and low disturbance to power supply, the proposed IRO technique also alleviates the design complexity of power supply in future TDC applications.
URI: https://hdl.handle.net/10356/144727
ISSN: 1558-0806
DOI: 10.1109/TCSI.2019.2949732
Rights: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work is available at: https://doi.org/10.1109/TCSI.2019.2949732
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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