A low-power high-performance accelerometer ASIC for high-end medical motion sensing

Olivier D Bernal; Kunil Choe; Pradeep K Gopalakrishnan; Hsiu-Yu Cheng; Kotlanka R Krishna; David Nuttman; Noel Axelrod; Minkyu Je

doi:10.1109/IEMBS.2010.5627928

A low-power high-performance accelerometer ASIC for high-end medical motion sensing

Annu Int Conf IEEE Eng Med Biol Soc. 2010:2010:190-3. doi: 10.1109/IEMBS.2010.5627928.

Authors

Olivier D Bernal¹, Kunil Choe, Pradeep K Gopalakrishnan, Hsiu-Yu Cheng, Kotlanka R Krishna, David Nuttman, Noel Axelrod, Minkyu Je

Affiliation

¹ Department of Electronics, University of Toulouse INP-LOSE, France.

PMID: 21097178
DOI: 10.1109/IEMBS.2010.5627928

Abstract

A 170µW readout IC for a capacitive MEMS acceleration sensor was implemented in a 1.5V 0.13µm CMOS for high-end medical motion sensing applications. The accelerometer achieves a 45µg/vHz noise floor and a dynamic range larger than 87dB for a 400Hz bandwidth. Power reduction is achieved by introducing reset and common-mode feedback circuit techniques based on a non-unity-gain feedback configuration.

Publication types

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

MeSH terms

Acceleration*
Electronics, Medical / instrumentation
Feedback*
Humans
Micro-Electrical-Mechanical Systems
Monitoring, Physiologic / instrumentation*
Movement / physiology*
Signal Processing, Computer-Assisted / instrumentation*