Adaptive resolution ADC array for neural implant.
Annu Int Conf IEEE Eng Med Biol Soc
; 2009: 1053-6, 2009.
Article
en En
| MEDLINE
| ID: mdl-19965135
ABSTRACT
This paper describes an ADC array for an implantable prosthetic processor which digitizes neural signals sensed by a microelectrode array. The ADC array consists of 96 variable resolution ADC base cells. The base ADC has been implemented in 0.13 microm CMOS as a 100kS/s SAR ADC whose resolution can be varied from 3 to 8-bits with corresponding power consumption of 0.23 microW to 0.90 microW achieving an ENOB of 7.8 at the 8-bit setting. The resolution of each ADC cell in the array is varied according to neural data content of the signal from the corresponding electrode. Resolution adaptation reduces power consumption by a factor of 2.3 whilst maintaining an effective 7.8-bit resolution across all channels.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Prótesis e Implantes
/
Telemetría
/
Procesamiento de Señales Asistido por Computador
/
Encéfalo
/
Conversión Analogo-Digital
/
Electroencefalografía
Tipo de estudio:
Diagnostic_studies
/
Evaluation_studies
Idioma:
En
Revista:
Annu Int Conf IEEE Eng Med Biol Soc
Año:
2009
Tipo del documento:
Article
País de afiliación:
Estados Unidos