Fully Implantable Cochlear Implant Interface Electronics With 51.2-$\mu$ W Front-End Circuit

Uluşan, Hasan; Chamanian, Salar; İlik, Bedirhan; Muhtaroğlu, Ali; Külah, Haluk

doi:10.1109/tvlsi.2019.2898873

Cited by 17 publications

(13 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dual function of the amplifier optimizes system power dissipation better compared to the previously reported cochlear implant interfaces, which implement a separate DC compression stage after the downstream envelope detector [34], [35]. The LA is a modified version of the one presented in [36] to accommodate a number of circuit power optimization features, in addition to system level power gating of the lower supply voltage (V DD = 1.8 V) illustrated by switches in Fig. 2: The subthreshold design delivers a single ended AC current output and eliminates the load resistor compared to [36], which increases the dynamic range by trading off less critical per-stage gain.…”

Section: A Power Optimized Logarithmic Amplifiermentioning

confidence: 99%

“…The LA is a modified version of the one presented in [36] to accommodate a number of circuit power optimization features, in addition to system level power gating of the lower supply voltage (V DD = 1.8 V) illustrated by switches in Fig. 2: The subthreshold design delivers a single ended AC current output and eliminates the load resistor compared to [36], which increases the dynamic range by trading off less critical per-stage gain. The number of stages in the circuit is otherwise minimized with the constraint to deliver the desired input compression range.…”

Section: A Power Optimized Logarithmic Amplifiermentioning

confidence: 99%

“…In viewpoint of noise performance, the input referred noise of the logarithmic amplifier is mainly determined by the first stage, while the noise generated by next stages are suppressed by the voltage gain (A V ) of the staging amplifiers, and can be ignored [36]. The input referred noise of the first stage is provided by Eq.…”

Section: A Power Optimized Logarithmic Amplifiermentioning

confidence: 99%

See 2 more Smart Citations

A Sub-500 $\mu$ W Interface Electronics for Bionic Ears

2019

Self Cite

View full text Add to dashboard Cite

This paper presents an ultra-low power current-mode circuit for a bionic ear interface. Piezoelectric (PZT) sensors at the system input transduce sound vibrations into multi-channel electrical signals, which are then processed by the proposed circuit to stimulate the auditory nerves consistently with the input amplitude level. The sensor outputs are first amplified and range-compressed through ultra-low power logarithmic amplifiers (LAs) into AC current waveforms, which are then rectified through custom current-mode circuits. The envelopes of the rectified signals are extracted, and are selectively sampled as reference for the stimulation current generator, armed with a 7-bit user-programmed DAC to enable patient fitting (calibration). Adjusted biphasic stimulation current is delivered to the nerves according to continuous inter-leaved sampling (CIS) stimulation strategy through a switch matrix. Each current pulse is optimized to have an exponentially decaying shape, which leads to reduced supply voltage, and hence ∼20% lower stimulator power dissipation. The circuit has been designed and fabricated in 180nm high-voltage CMOS technology with up to 60 dB measured input dynamic range, and up to 1 mA average stimulation current. The 8-channel interface has been validated to be fully functional with 472 µW power dissipation, which is the lowest value in the literature to date, when stimulated by a mimicked speech signal. INDEX TERMS Fully implantable cochlear implant, bionic ear, neural stimulation, ultra-low power, current-mode.

show abstract

Section: A Power Optimized Logarithmic Amplifiermentioning

confidence: 99%

Section: A Power Optimized Logarithmic Amplifiermentioning

confidence: 99%

Section: A Power Optimized Logarithmic Amplifiermentioning

confidence: 99%

See 1 more Smart Citation

A Sub-500 $\mu$ W Interface Electronics for Bionic Ears

2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Electrical microstimulations in the brain, as well as peripheral nerves, enable sensory or motor rehabilitation [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ] such as cochlear implants for the deaf [ 10 , 11 , 12 , 13 , 14 ], deep brain stimulators for Parkinsonism or essential tremors [ 15 , 16 ], and cardiac pacemakers for arrhythmia [ 17 ]. Neural engineering for non-human application is also under investigation, such as ‘animal-bots’ for the safe and fast screening of dangerous or disastrous situations.…”

Section: Introductionmentioning

confidence: 99%

Current Stimulation of the Midbrain Nucleus in Pigeons for Avian Flight Control

et al. 2021

View full text Add to dashboard Cite

A number of research attempts to understand and modulate sensory and motor skills that are beyond the capability of humans have been underway. They have mainly been expounded in rodent models, where numerous reports of controlling movement to reach target locations by brain stimulation have been achieved. However, in the case of birds, although basic research on movement control has been conducted, the brain nuclei that are triggering these movements have yet to be established. In order to fully control flight navigation in birds, the basic central nervous system involved in flight behavior should be understood comprehensively, and functional maps of the birds’ brains to study the possibility of flight control need to be clarified. Here, we established a stable stereotactic surgery to implant multi-wire electrode arrays and electrically stimulated several nuclei of the pigeon’s brain. A multi-channel electrode array and a wireless stimulation system were implanted in thirteen pigeons. The pigeons' flight trajectories on electrical stimulation of the cerebral nuclei were monitored and analyzed by a 3D motion tracking program to evaluate the behavioral change, and the exact stimulation site in the brain was confirmed by the postmortem histological examination. Among them, five pigeons were able to induce right and left body turns by stimulating the nuclei of the tractus occipito-mesencephalicus (OM), nucleus taeniae (TN), or nucleus rotundus (RT); the nuclei of tractus septo-mesencephalicus (TSM) or archistriatum ventrale (AV) were stimulated to induce flight aviation for flapping and take-off with five pigeons.

show abstract

“…In evidence to WHO recent proclamation [5] 488 million people complain of hearing disabilities for >40dB echo auditory signals, may affects more than 900 million people by 2025 because of environment conditions, noise pollution, etc., Settling to above strategy research inventors proposing certain medication facilities like arti cial implantation (CI) from early 1800 to till date by accommodating electrodes for designing purpose. CI uses 22 active platinum electrodes providing 11 channels as an array, with length of 17mm, each electrode isolation of <0.1mm & facilitates the biphasic electric stimulus to auditory nerve [6]and spiral ganglion nerve in Fig.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of High Performance PPSK demodulator in Biomedical Implant

Katikala

Murthy

Nath

2021

Preprint

View full text Add to dashboard Cite

The important challenge for the realization of hearing aids is small size, low cost, low power consumption and better performance, etc. Keeping these requirements in view this work concentrates on the VLSI (Very Large Scale Integrated) implementation of analog circuit that mimic the PPSK (Passive Phase Shift Keying) demodulator with low pass filter. This research deals with RF Cochlear implant circuits and their data transmission. A PPSK modulator is used for uplink data transmission in biomedical implants with simultaneous power, data transmission This paper deals about the implementation of PPSK demodulator with related circuits and low pass filter which are used in cochlear implants consumes low power and operates at 14MHz frequency. These circuits are designed using FINFET 20nm technology with 0.4v DC supply voltage. The performance of proposed design over the previous design is operating at low threshold voltage, reduces static leakage currents and often observed greater than 30 times of improvement in speed performance

show abstract

Fully Implantable Cochlear Implant Interface Electronics With 51.2-$\mu$ W Front-End Circuit

Cited by 17 publications

References 33 publications

A Sub-500 $\mu$ W Interface Electronics for Bionic Ears

A Sub-500 $\mu$ W Interface Electronics for Bionic Ears

Current Stimulation of the Midbrain Nucleus in Pigeons for Avian Flight Control

Design and Implementation of High Performance PPSK demodulator in Biomedical Implant

Contact Info

Product

Resources

About