Publicação: A low-power silicon-on-insulator PWM discriminator for biomedical applications
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Data
2000-01-01
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Institute of Electrical and Electronics Engineers (IEEE)
Tipo
Trabalho apresentado em evento
Direito de acesso
Acesso aberto
Resumo
A CMOS/SOI circuit to decode PWM signals is presented as part of a body-implanted neurostimulator for visual prosthesis. Since encoded data is the sole input to the circuit, the decoding technique is based on a double-integration concept and does not require dc filtering. Nonoverlapping control phases are internally derived from the incoming pulses and a fast-settling comparator ensures good discrimination accuracy in the megahertz range. The circuit was integrated on a 2 mu m single-metal SOI fabrication process and has an effective area of 2mm(2) Typically, the measured resolution of encoding parameter a was better than 10% at 6MHz and V-DD=3.3V. Stand-by consumption is around 340 mu W. Pulses with frequencies up to 15MHz and alpha = 10% can be discriminated for V-DD spanning from 2.3V to 3.3V. Such an excellent immunity to V-DD deviations meets a design specification with respect to inherent coupling losses on transmitting data and power by means of a transcutaneous link.
Descrição
Palavras-chave
Digital filters, Electric network analysis, Electric network synthesis, Energy utilization, Image analysis, Image quality, Integrated circuit layout, Phase comparators, Pulse width modulation, Signal encoding, Silicon on insulator technology, Body-implanted neurostimulators, Fast-settling comparators, CMOS integrated circuits
Idioma
Inglês
Como citar
Iscas 2000: IEEE International Symposium on Circuits and Systems - Proceedings, Vol V. New York: IEEE, p. 277-280, 2000.
