Table of Contents
Advances in Electronics
Volume 2014, Article ID 394057, 13 pages
http://dx.doi.org/10.1155/2014/394057
Research Article

Low Power Data Acquisition System for Bioimplantable Devices

Department of Electronics and Communication Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore 575025, India

Received 21 September 2014; Revised 21 November 2014; Accepted 4 December 2014; Published 21 December 2014

Academic Editor: Sebastian Hoyos

Copyright © 2014 Sadeque Reza Khan and M. S. Bhat. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Signal acquisition represents the most important block in biomedical devices, because of its responsibilities to retrieve precise data from the biological tissues. In this paper an energy efficient data acquisition unit is presented which includes low power high bandwidth front-end amplifier and a 10-bit fully differential successive approximation ADC. The proposed system is designed with 0.18 µm CMOS technology and the simulation results show that the bioamplifier maintains a wide bandwidth versus low noise trade-off and the proposed SAR-ADC consumes 450 nW power under 1.8 V supply and retain the effective number of bit 9.55 in 100 KS/s sampling rate.