Neuromodulation

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A 32-Channel 85.4 dB SNDR Time-Multiplexed Neural Recording Front-End Achieving Within-Conversion Artifact Recovery

A 32-Channel 85.4 dB SNDR Time-Multiplexed Neural Recording Front-End Achieving Within-Conversion Artifact Recovery 150 150
Author(s): Arindam Mandal, Chi-Hsiang Huang, Julian Arenas, Wei-En Lee, Kevin D. Patino-Sosa, Philip Anschutz, Amanda Jacob, Keshav Ramachandra, Samuel Sober, Muhannad S. Bakir, Shaolan Li, Visvesh S. Sathe

Abstract:

This article presents a 32-channel time-multiplexed highly digital neural recording front-end (RFE) that exhibits sub- $8.8~\mu $ s recovery latency from large stimulation artifacts while delivering high-resolution data at the Nyquist rate. The RFE is time-shared across 32 channels for low-frequency electrocorticography (ECoG) recording and across four channels for high-frequency action potentials (…

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1053 – 1067
Year of Publication: 2026
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3643367
Publisher: IEEE

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A 10.2 V 8-Channel Neural Stimulator With Nearly Constant Efficiency Across 90% Current Range and a TDM ADC-Based One-Shot Charge Balancing With < 6 mV Residue

A 10.2 V 8-Channel Neural Stimulator With Nearly Constant Efficiency Across 90% Current Range and a TDM ADC-Based One-Shot Charge Balancing With < 6 mV Residue 150 150
Author(s): Alin Thomas Tharakan, Cong Huang, Yiheng Fu, Horacio Londoño Ramírez, Stéphanie P. Lacour, Mahsa Shoaran

Abstract:

This letter presents an 8-channel current-mode stimulator achieving a ±10.2 V voltage compliance in a standard CMOS process, supporting up to 4.5 mA stimulation current per channel. The proposed dynamic charge pump (DCP), which adaptively sizes its switches based on the stimulation current, helps achieve ~15% higher power efficiency at low currents compared …

Published in: IEEE Solid-State Circuits Letters
Page(s): 49 – 52
Year of Publication: 2026
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2026.3653014
Publisher: IEEE

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