CMOS Current-Frequency Signal Processing Unit for Bioimplantable Sensors

Author

Madeline Nicole Threatt, University of Tennessee - KnoxvilleFollow

Date of Award

8-2015

Degree Type

Thesis

Degree Name

Master of Science

Major

Electrical Engineering

Major Professor

Syed K. Islam

Committee Members

Benjamin J. Blalock, Nicole McFarlane

Abstract

Over the past few decades, implantable monitoring of glucose, lactate acid, and pH monitoring has become a viable replacement for stationary monitoring. Implantable biosensing requires biosensors in conjunction with corresponding potentiostats and a signal processing unit to translate the data information to a more versatile, transmittable form. This thesis presents a current-mode signal processing unit (SPU) that merges the simplicity of a charging capacitor in feedback topology with the accuracy of a delta-sigma modulator to create a pulse train with a frequency proportional to the input current. The SPU was realized in a 0.18 µ[micro]m bulk CMOS process.

Recommended Citation

Threatt, Madeline Nicole, "CMOS Current-Frequency Signal Processing Unit for Bioimplantable Sensors. " Master's Thesis, University of Tennessee, 2015.
https://trace.tennessee.edu/utk_gradthes/3519