A Fully Integrated Energy-Aware Baseband Circuitry for Next-Generation Retinal Implants

Gong, Cihun-Siyong Alex; Yao, Kaisheng; Su, Chun-Hsien; Ho, Sheng-Yang; Chen, Tongyi; Lu, Jyun-Wei; Chang, Yin; Shiue, Muh-Tian

doi:10.1109/cne.2007.369624

Cited by 1 publication

(1 citation statement)

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“…The experiment on the power saving was carefully conducted in a programmable temperature and humidity chamber (MHU-408LRBDA, Terchy Environmental Technology). In terms of the results, the power-saving performance in the stimulation system is restricted by the embedded keeper circuits used to maintain sufficient noise immunity in the energy recovery circuits [55,71]. The average power saving is approximately 178mW for the system operating at mode II.…”

Section: Resultsmentioning

confidence: 99%

A CMOS multichannel electrical stimulation prototype system

Gong

Yao

Shiue

2011

Circuit Theory & Apps

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SUMMARYWe developed an inductively powered integrated electronic prosthesis, allowing for the trade-offs among implant functionality, circuit complexity, power consumption, hardware cost, and integrity of data recovery, for a multichannel microstimulation circuitry. The proposed prosthesis features energy efficiency and is capable of up to 40 scan/s with 240 stimulus channels in mode I and three times resolution at the same scan rate in mode II under a carrier frequency of 2MHz. In order to satisfy future upgrade demands, the prototype has been constructed with a 16-channel-based stimulation scheme so that the spatial resolution of the design can be extended toward various experimental purposes. The circuit techniques used in the system are detailed. Results from fabricated chips using a 0.18-mm CMOS process are given as proof of concept.

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Section: Resultsmentioning

confidence: 99%