Biomedical Engineering and Bioengineering Commons^™

An Investigation Of The Use Of A High Resolution Adc As A Digital Biopotential Amplifier, Damon Berry, Frank Duignan, Richard Hayes

Conference Papers

Sigma delta analogue to digital converters have been used in many signal processing applications including some commercially available systems for sampling of bio-signals Bio-potential amplifiers have traditionally utilised specialised highquality analogue components to amplify bio-signals.

The central aim of this work is to investigate the benefits of using high-resolution sigma delta conversion as a digital amplification stage in the signal path of a bio-potential amplifier. A number of system arrangements specific to bio-potential measurement are presented and discussed. These arrangements are designed to use the high resolution capacity of the sigma delta converter in different ways, providing different benefits. To …