A 430nW 64nV/vHz current-reuse telescopic amplifier for neural recording applications
Abstract
This paper presents a low-power low-noise amplifier for neural recording applications. A single-stage current-reuse telescopic topology is proposed to achieve high DC gain and improve the noise efficiency factor (NEF) while allowing the amplifier to be scaled for high bandwidth sensing applications and/or to achieve lower thermal noise floor. The design is fabricated in a standard 0.18μm CMOS process and occupies an active area of 0.16mm2. Experimental measurements show a 430nW power consumption from a 1.2V supply, a thermal noise floor of 63.8nV/√Hz and a corresponding NEF of 1.5.
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The inadequacy of NEF alone becomes more pronounced because recent works have reported operating supply voltages below 1 V.
“This inadequacy becomes more pronounced, as recent works have reported operating supply voltages below 1 V [49, 129, 156].”
From Implantable neurotechnologies: a review of integrated circuit neural amplifiers (2016) · cites this paper as [129]
Amplifiers using the current-reuse topology achieve state-of-the-art noise performance.
“Amplifiers using this topology achieve state-of-the-art noise performance [49, 129, 156].”
From Implantable neurotechnologies: a review of integrated circuit neural amplifiers (2016) · cites this paper as [129]
Cites
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An Energy-Efficient Micropower Neural Recording Amplifier
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Design of Ultra-Low Power Biopotential Amplifiers for Biosignal Acquisition Applications
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Energy Efficient Low-Noise Neural Recording Amplifier With Enhanced Noise Efficiency Factor
Majidzadeh, V., Schmid, A., & Leblebici, Y. (2011) · IEEE Transactions on Biomedical Circuits and Systems · doi:10.1109/tbcas.2010.2078815 · Cited by 165 · see citing works
A Low-Power 32-Channel Digitally Programmable Neural Recording Integrated Circuit
Wattanapanitch, W., & Sarpeshkar, R. (2011) · IEEE Transactions on Biomedical Circuits and Systems · doi:10.1109/tbcas.2011.2163404 · Cited by 146 · see citing works
A Micropower Low-Noise Neural Recording Front-End Circuit for Epileptic Seizure Detection
Qian, C., Parramon, J., & Sanchez-Sinencio, E. (2011) · IEEE Journal of Solid-State Circuits · doi:10.1109/jssc.2011.2126370 · Cited by 145 · see citing works
A Sub-Microwatt Low-Noise Amplifier for Neural Recording
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A 0.45V 100-channel neural-recording IC with sub-µW/channel consumption in 0.18µm CMOS
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800 nW 43 nV/√Hz neural recording amplifier with enhanced noise efficiency factor
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A low-power orthogonal current-reuse amplifier for parallel sensing applications
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Kim, C., Joshi, S., Courellis, H., Wang, J., Miller, C., & Cauwenberghs, G. (2018) · IEEE Journal of Solid-State Circuits · doi:10.1109/jssc.2018.2870555 · Cited by 104 · see citing works
Implantable neurotechnologies: a review of integrated circuit neural amplifiers
Ng, K. A., Greenwald, E., Xu, Y. P., & Thakor, N. V. (2016) · Medical & Biological Engineering & Computing · doi:10.1007/s11517-015-1431-3 · Cited by 83 · see citing works
Active Neural Interface Circuits and Systems for Selective Control of Peripheral Nerves: A Review
Habibollahi, M., Jiang, D., Lancashire, H. T., & Demosthenous, A. (2024) · IEEE Transactions on Biomedical Circuits and Systems · doi:10.1109/tbcas.2024.3430038 · Cited by 11 · see citing works
“A superior trade-off between noise and power has been reported (NEF 2) using the stacked and orthogonal current-reuse methods with OTA topologies such as the telescopic and folded cascode amplifiers [183].”
- Authors
- Song, S., Rooijakkers, M. J., Harpe, P., Rabotti, C., Mischi, M., van Roermund, A. H. M., & Cantatore, E.
- Affiliations
- Eindhoven University of Technology (NL)
- Venue
- 2013 IEEE Biomedical Circuits and Systems Conference (BioCAS)
- Publisher
- IEEE
- Published
- 2013-10
- Pages
- 322-325
- OpenAlex
- W2090871552
- Cited by
- 33
- References
- 12
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 5 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 2 · 2019: 2 · 2018: 4 · 2017: 5 · 2016: 3 · 2015: 3
- FWCI
- 3.96
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- IEEE Biomedical Circuits and Systems Conference (BioCAS) (publishedVersion)
- TU/e Research Portal (publishedVersion)
- TU/e Research Portal (submittedVersion)
- Funders
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek
- Stichting voor de Technische Wetenschappen
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Analog and Mixed-Signal Circuit Design
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Radio Frequency Integrated Circuit Design
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Low-power high-performance VLSI design
- Keywords
- neural recording, low-power amplifier, low noise amplifier, noise efficiency factor, DC gain, CMOS analog front-end
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