A low-power reconfigurable ADC for biomedical sensor interfaces

Author

Rodríguez-Pérez, Alberto ; Delgado-Restituto, Manuel ; Medeiro, Fernando ; Rodríguez-Vázquez, Angel

Author_Institution

Inst. of Microelectron. of Seville (IMSE-CNM-CSIC), Univ. of Seville, Sevilla, Spain

fYear

2009

fDate

26-28 Nov. 2009

Firstpage

253

Lastpage

256

Abstract

This paper presents a 12-bit low-voltage low-power reconfigurable Analog-to-Digital Converter (ADC). The design employs Switched Capacitor (SC) techniques and implements a Successive Approximation (SA) algorithm. The ADC can be tuned to handle a large variety of biopotential signals, with digitally selectable resolution and input signal amplitude. It achieves 10.4-bit of effective resolution sampling at 56 kS/s, with a power consumption below 3 Â¿W from a 1 V voltage supply.

Keywords

analogue-digital conversion; bioelectric phenomena; biomedical electronics; biomedical measurement; data acquisition; medical signal processing; switched capacitor networks; analog to digital converter; biomedical sensor interfaces; biopotential signals; low voltage low power reconfigurable ADC; successive approximation algorithm; switched capacitor techniques; voltage 1 V; Biosensors; Capacitors; Clocks; Energy consumption; Frequency; Low-noise amplifiers; Parasitic capacitance; Signal resolution; Tunable circuits and devices; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Circuits and Systems Conference, 2009. BioCAS 2009. IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4244-4917-0

Electronic_ISBN

978-1-4244-4918-7

Type

conf

DOI

10.1109/BIOCAS.2009.5372037

Filename

5372037