OREGON STATE UNIVERSITY

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A 12-bit 7 µW/channel 1 kHz/channel incremental ADC for biosensor interface circuits

TitleA 12-bit 7 µW/channel 1 kHz/channel incremental ADC for biosensor interface circuits
Publication TypeConference Paper
Year of Publication2012
AuthorsChen, C-H., J. Crop, J. Chae, P. Y. Chiang, and G. C. Temes
Conference Name2012 IEEE International Symposium on Circuits and Systems - ISCAS 2012
Pagination2969 - 2972
Date Published05/2012
PublisherIEEE
Conference LocationSeoul, Korea (South)
ISBN Number978-1-4673-0217-3
Abstract

A two-channel micro-power incremental ADC, designed for biosensor interface circuits, is reported. It uses a noise-coupled multi-bit delta-sigma loop, integrated with a novel digital decimation filter operating in near-threshold. It was realized in the IBM 90 nm CMOS technology. The fabricated 90nm CMOS prototype device, for a 1 Vpp differential input range, experimentally shows a 74dB SNDR up to 2 kHz (1 kHz/channel) signal bandwidth. The total measured power consumption of the modulator is 13.5 μW.

DOI10.1109/ISCAS.2012.6271940