Methodology for readout and ring oscillator optimization toward energy-efficient VCO-based ADCs
- Author
- Jonas Borgmans, Elisa Sacco, Pieter Rombouts (UGent) and Georges Gielen
- Organization
- Project
- Abstract
- For the design of ring oscillator-based ADCs, little has been reported on how to optimally co-design the readout scheme and the ring oscillator core towards optimal energy efficiency. This paper describes a methodology to find this optimum for a target SQNR and signal bandwidth, for the case of 1st-order quantization noise shaping. In short, starting from initial assumptions on the VCO, the readout optimization boils down to finding the best VCO frequency. From this, the number of readout phases, the sampling frequency of the readout and the number of bits in the quantizers are derived. Then, it is explained how to adjust the VCO core toward the corresponding optimal VCO configuration. This is discussed for the case of a current-controlled ring oscillator, indicating the main constraints that define the design space for such a VCO optimization. If the actual VCO configuration is bounded by practical constraints, this approach can be re-iterated where a new readout optimization is performed taking these constraints into account.
- Keywords
- Electrical and Electronic Engineering, Voltage-controlled oscillators, Optimization, Bandwidth, Ring oscillators, Computer architecture, Power demand, Delays, VCO, ring oscillator, VCO-based analog-to-digital converter, optimization, single-phase vs, multi-phase readout, delay cell, input-referred noise, PHASE NOISE, SENSOR, TEMPERATURE, DESIGN, JITTER
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-8742763
- MLA
- Borgmans, Jonas, et al. “Methodology for Readout and Ring Oscillator Optimization toward Energy-Efficient VCO-Based ADCs.” IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, vol. 69, no. 3, 2022, pp. 985–98, doi:10.1109/tcsi.2021.3129919.
- APA
- Borgmans, J., Sacco, E., Rombouts, P., & Gielen, G. (2022). Methodology for readout and ring oscillator optimization toward energy-efficient VCO-based ADCs. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 69(3), 985–998. https://doi.org/10.1109/tcsi.2021.3129919
- Chicago author-date
- Borgmans, Jonas, Elisa Sacco, Pieter Rombouts, and Georges Gielen. 2022. “Methodology for Readout and Ring Oscillator Optimization toward Energy-Efficient VCO-Based ADCs.” IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS 69 (3): 985–98. https://doi.org/10.1109/tcsi.2021.3129919.
- Chicago author-date (all authors)
- Borgmans, Jonas, Elisa Sacco, Pieter Rombouts, and Georges Gielen. 2022. “Methodology for Readout and Ring Oscillator Optimization toward Energy-Efficient VCO-Based ADCs.” IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS 69 (3): 985–998. doi:10.1109/tcsi.2021.3129919.
- Vancouver
- 1.Borgmans J, Sacco E, Rombouts P, Gielen G. Methodology for readout and ring oscillator optimization toward energy-efficient VCO-based ADCs. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS. 2022;69(3):985–98.
- IEEE
- [1]J. Borgmans, E. Sacco, P. Rombouts, and G. Gielen, “Methodology for readout and ring oscillator optimization toward energy-efficient VCO-based ADCs,” IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, vol. 69, no. 3, pp. 985–998, 2022.
@article{8742763,
abstract = {{For the design of ring oscillator-based ADCs, little has been reported on how to optimally co-design the readout scheme and the ring oscillator core towards optimal energy efficiency. This paper describes a methodology to find this optimum for a target SQNR and signal bandwidth, for the case of 1st-order quantization noise shaping. In short, starting from initial assumptions on the VCO, the readout optimization boils down to finding the best VCO frequency. From this, the number of readout phases, the sampling frequency of the readout and the number of bits in the quantizers are derived. Then, it is explained how to adjust the VCO core toward the corresponding optimal VCO configuration. This is discussed for the case of a current-controlled ring oscillator, indicating the main constraints that define the design space for such a VCO optimization. If the actual VCO configuration is bounded by practical constraints, this approach can be re-iterated where a new readout optimization is performed taking these constraints into account.}},
author = {{Borgmans, Jonas and Sacco, Elisa and Rombouts, Pieter and Gielen, Georges}},
issn = {{1549-8328}},
journal = {{IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS}},
keywords = {{Electrical and Electronic Engineering,Voltage-controlled oscillators,Optimization,Bandwidth,Ring oscillators,Computer architecture,Power demand,Delays,VCO,ring oscillator,VCO-based analog-to-digital converter,optimization,single-phase vs,multi-phase readout,delay cell,input-referred noise,PHASE NOISE,SENSOR,TEMPERATURE,DESIGN,JITTER}},
language = {{eng}},
number = {{3}},
pages = {{985--998}},
title = {{Methodology for readout and ring oscillator optimization toward energy-efficient VCO-based ADCs}},
url = {{http://doi.org/10.1109/tcsi.2021.3129919}},
volume = {{69}},
year = {{2022}},
}
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