A 1V low power second-order delta-sigma modulator for biomedical signal application

Chih-Han Hsu; Kea-Tiong Tang

doi:10.1109/EMBC.2013.6609924

A 1V low power second-order delta-sigma modulator for biomedical signal application

Annu Int Conf IEEE Eng Med Biol Soc. 2013:2013:2008-11. doi: 10.1109/EMBC.2013.6609924.

Authors

Chih-Han Hsu, Kea-Tiong Tang

PMID: 24110111
DOI: 10.1109/EMBC.2013.6609924

Abstract

This paper presents the design and implementation of a low-power delta-sigma modulator for biomedical application with a standard 90 nm CMOS technology. The delta-sigma architecture is implemented as 2nd order feedforward architecture. A low quiescent current operational transconductance amplifier (OTA) is utilized to reduce power consumption. This delta-sigma modulator operated in 1V power supply, and achieved 64.87 dB signal to noise distortion ratio (SNDR) at 10 KHz bandwidth with an oversampling ratio (OSR) of 64. The power consumption is 17.14 µW, and the figure-of-merit (FOM) is 0.60 pJ/conv.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Amplifiers, Electronic
Biomedical Technology / instrumentation*
Electric Power Supplies
Equipment Design / instrumentation*
Signal Processing, Computer-Assisted / instrumentation*
Signal-To-Noise Ratio