Power, Clock, and Data Recovery in a Wireless Neural Recording Device

Black, D.; Harrison, R.R.

doi:10.1109/iscas.2006.1693775

Cited by 14 publications

(5 citation statements)

References 9 publications

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“…In addition, battery on CATS is III. TRANSCUTANEOUS WIRELESS POWER AND DATA TRANSFER An integrated receiver circuitry was designed and fabricated, which consists of an on-chip full-wave bridge rectifier, a voltage regulator, a date recovery circuit, a clock recovery circuit and a power-level detector [12] [13]. Three off-chip SMD capacitors are also necessary for coil resonant and voltage smoothing in implanted system, as is shown in Figure 1.…”

Section: System Architecturesementioning

confidence: 99%

Low power integrated circuits for wireless neural recording applications

Zhang

Gui

Chen

2008

APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems

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A group of prototype integrated circuits are presented for a wireless neural recording micro-system. An inductive link was built for transcutaneous wireless power transfer and data transmission. Power and data were transmitted by a pair of coils on a same carrier frequency. The integrated receiver circuitry was composed of a full-wave bridge rectifier, a voltage regulator, a date recovery circuit, a clock recovery circuit and a power detector. The amplifiers were designed with a limited bandwidth for neural signals acquisition. An integrated FM transmitter was used to transmit the extracted neural signals to external equipments. 16.5 mW power and 50 bps -2.5 Kbps command data can be received over 1 MHz carrier within 10 mm. The total gain of 60 dB was obtained by the preamplifier and a main amplifier at 0.95Hz -13.41 KHz with 0.215 mW power dissipation. The power consumption of the 100 MHz ASK transmitter is 0.374 mW. All the integrated circuits operated under a 3.3 V power supply except the voltage regulator.

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Section: System Architecturesementioning

confidence: 99%

Low power integrated circuits for wireless neural recording applications

Zhang

Gui

Chen

2008

APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems

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“…In the most transcutaneous power and data/clock transfer applications [13]- [15], the carrier frequency of inductive link is from 1 to 10 MHz, and the range of the recovered clock frequency is from 0.5 to 5 MHz. In our design, 0.5-5 MHz could be chosen as the value of the clock signal in Fig.2.…”

Section: Logicmentioning

confidence: 99%

Neuro-stimulus chip with photodiodes array for sub-retinal implants

Zhang

Huang

Chen

2008

2008 9th International Conference on Solid-State and Integrated-Circuit Technology

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A prototype neuro-stimulus chip for sub-retinal implants in blind patients affected by Age-related Macular Degeneration (AMD) or Retinitis Pigmentosa (RP) is presented in this paper. This retinal prosthetic chip was designed to replace the degenerated photoreceptor cells, and in order to stimulate directly the remaining healthy layers of retinal neurons. The current stimulus circuits are monolithic integrated with photodiodes (PD) array, which can convert the illumination on the eyes into bi-phasic electrical pulses. In addition, a novel charge cancellation circuit is used to discharge the electrodes for medical safty. The prototype chip is designed and fabricated in HJTC 0.18 J.lm N-well CMOS IP6M Mixsignal process, with a ± 2.5 V dual voltage power supply.

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“…1 Proposed ASKD architecture and its timing diagram Circuit operation: Schmitt triggers have been utilised to recover the clock from the carrier owing to their excellent noise immunity [2,3,6].…”

mentioning

confidence: 99%

202pJ/bit area-efficient ASK demodulator for high-density visual prostheses

Kim

Pedrotti

2012

Electron. Lett.

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A fully integrated low-power and area-efficient ASK demodulator is presented. By using a controllable digital envelope detector and a self-biased clock extractor, the threshold-detection level of the demodulator can be adjusted and the clock from the wireless power carrier can be recovered. This implantable demodulator was fabricated in a 0.35 mm CMOS process and tested using inductively-coupled coils with a resonant frequency of 13.56 MHz.

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Power, Clock, and Data Recovery in a Wireless Neural Recording Device

Cited by 14 publications

References 9 publications

Low power integrated circuits for wireless neural recording applications

Low power integrated circuits for wireless neural recording applications

Neuro-stimulus chip with photodiodes array for sub-retinal implants

202pJ/bit area-efficient ASK demodulator for high-density visual prostheses

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