Integrated circuits and electrode interfaces for noninvasive physiological monitoring

S Ha, C Kim, YM Chi, A Akinin, C Maier… - IEEE Transactions …, 2014 - ieeexplore.ieee.org
This paper presents an overview of the fundamentals and state of the-art in noninvasive
physiological monitoring instrumentation with a focus on electrode and optrode interfaces to …

A micro-power two-step incremental analog-to-digital converter

CH Chen, Y Zhang, T He, PY Chiang… - IEEE Journal of Solid …, 2015 - ieeexplore.ieee.org
Integrated sensor interface circuits require energy-efficient high-resolution data converters.
This paper proposes a two-step incremental A/D converter (IADC) which extends the …

Advanced materials for neural surface electrodes

AA Schendel, KW Eliceiri, JC Williams - Current Opinion in Solid State and …, 2014 - Elsevier
Designing electrodes for neural interfacing applications requires deep consideration of a
multitude of materials factors. These factors include, but are not limited to, the stiffness …

Energy recycling telemetry IC with simultaneous 11.5 mW power and 6.78 Mb/s backward data delivery over a single 13.56 MHz inductive link

S Ha, C Kim, J Park, S Joshi… - IEEE Journal of Solid …, 2016 - ieeexplore.ieee.org
We present a telemetry IC with a new data modulation scheme for efficient simultaneous
transfer of power and backward data over a single inductive link. Data-driven synchronized …

A 16 b multi-step incremental analog-to-digital converter with single-opamp multi-slope extended counting

Y Zhang, CH Chen, T He… - IEEE Journal of solid-state …, 2017 - ieeexplore.ieee.org
This paper presents a multi-step incremental analog-to-digital converter (IADC) using multi-
slope extended counting. Only one active integrator is used in the three-step conversion …

Low-power integrated circuits for wearable electrophysiology

S Ha, C Kim, H Wang, YM Chi, PP Mercier… - Wearable …, 2021 - Elsevier
This chapter presents an overview of the fundamentals and state of the art in non-invasive
biopotential recording instrumentation with a focus on micro-power integrated circuit design …

A 1024-Channel 10-Bit 36-W/ch CMOS ROIC for Multiplexed GFET-Only Sensor Arrays in Brain Mapping

J Cisneros-Fernández… - … Circuits and Systems, 2021 - ieeexplore.ieee.org
This paper presents a 1024-channel neural read-out integrated circuit (ROIC) for solution-
gated GFET sensing probes in massive ECoG brain mapping. The proposed time-domain …

Exploiting electrocorticographic spectral characteristics for optimized signal chain design: A 1.08 W analog front end with reduced ADC resolution requirements

WA Smith, BJ Mogen, EE Fetz… - IEEE transactions on …, 2016 - ieeexplore.ieee.org
Electrocorticography (ECoG) is an important area of research for Brain-Computer Interface
(BCI) development. ECoG, along with some other biopotentials, has spectral characteristics …

A 200-Mb/s energy efficient transcranial transmitter using inductive coupling

W Li, Y Duan, J Rabaey - IEEE transactions on biomedical …, 2018 - ieeexplore.ieee.org
This paper presents an energy efficient wireless transmitter (TX) for neural implants. It
utilizes inductive coupling with de-Q'ed TX inductor to achieve 200 Mb/s throughput. An ultra …

Incremental analog-to-digital converters for high-resolution energy-efficient sensor interfaces

CH Chen, T He, Y Zhang… - IEEE Journal on Emerging …, 2015 - ieeexplore.ieee.org
Integrated sensor interface circuits require power-efficient high-accuracy data converters. In
many applications, the best choice is to use incremental A/D converters (IADCs) …