Title :
Adaptive ADC design for neuro-prosthetic interfaces: base ADC cell
Author :
O´Driscoll, Stephen ; Meng, Teresa H.
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., CA, USA
fDate :
28 Aug.-2 Sept. 2005
Abstract :
This paper presents the design of a low power, variable resolution, successive approximation analog-to-digital converter (ADC). This converter will be the base cell in an array of 100 converters intended for use in a neuro-prosthetic implant. The ADC resolution can be varied from 3 to 8 bits in 1 bit steps. Offset cancellation is required for ≥ 7 bit resolution. The power consumption of the base ADC ranges from 0.5μW at 3 bit resolution to 0.9 μW at 6 bits and to 4 μW at 8 bits whilst maintaining INL and DNL < 0.5 bit at 100 kS/s.
Keywords :
analogue-digital conversion; biomedical electronics; low-power electronics; network synthesis; prosthetics; 0.5 muW; 0.9 muW; 3 bit; 4 muW; 6 bit; 8 bit; ADC resolution; adaptive ADC design; analog-to-digital converters; base ADC cells; neuro-prosthetic interfaces; offset cancellation; power consumption; Analog-digital conversion; CMOS technology; Electrodes; Energy consumption; Entropy; Neurons; Sampling methods; Signal resolution; Sorting; Telemetry;
Conference_Titel :
Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on
Print_ISBN :
0-7803-9066-0
DOI :
10.1109/ECCTD.2005.1522970
